Surpass Hit 7035 Td

1/84 IPT NGM W. Kaiser

Technical Description SURPASS hiT 7035 February 27, 2008 / Issue 4.0

Copyright 2007 Nokia Siemens Networks. All rights reserved.

Technical Description SURPASS hiT 7035 Issue 4.0




The information contained in this document is confidential and the property of Nokia Siemens Networks and is supplied without liability for errors or omissions. It is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. Nokia Siemens Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation.

This Technical Description is provided as a generic descriptive document only. It does not include any legally binding statement. The product features, and details thereof, discussed in this Technical Description may include those that prove to be temporarily or permanently unavailable. Nokia Siemens Networks reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service.

Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NO EVENT WILL NOKIA SIEMENS NETWORKS BE LIABLE FOR ERRORS IN THIS DOCUMENTATION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL, DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUT NOT LIMITED TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESS OPPORTUNITY OR DATA, THAT MAY ARISE FROM THE USE OF THIS DOCUMENT OR THE INFORMATION IN IT.

This documentation and the product it describes are considered protected by copyrights and other intellectual property rights according to the applicable laws.

The wave logo is a trademark of Nokia Siemens Networks Oy. Nokia is a registered trademark of Nokia Corporation. Siemens is a registered trademark of Siemens AG.

Other product names mentioned in this document may be trademarks of their respective owners, and they are mentioned for identification purposes only.

Copyright Nokia Siemens Networks 2007. All rights reserved. The copyright and the foregoing restrictions on reproduction and use extend to all media in which the information may be embodied.

History of Changes

Control Date Author Comments

3.0 20.06.2007 Rainer Koster Rebranded to NSN layout

4.0 Feb 27, 2008 Th. Jost New SW license structure added




Contents

1. Introduction ............................................................................ 8 1.1 Editorials ........................................................................................................... 8 1.2 Next Generation SDH ....................................................................................... 8 1.3 SURPASS hiT 70 series ................................................................................... 9

2. SURPASS hiT 7035 Overview............................................. 10 2.1 Overview......................................................................................................... 10 2.1.1 Physical Structure ........................................................................................... 11 2.1.2 Cross Connection and Switching Capability ................................................... 13 2.1.3 Line/Service Interface ..................................................................................... 13 2.2 Data Capabilities............................................................................................. 14 2.3 Advanced Data Service Support..................................................................... 14 2.3.1 IEEE 802.1Q (VLAN) ...................................................................................... 14 2.3.2 Input Information Rating Limiting .................................................................... 15 2.3.3 Class of Service .............................................................................................. 15 2.3.4 GFP Data Encapsulation ................................................................................ 15 2.3.5 Virtual Concatenation and LCAS .................................................................... 15 2.3.6 RSTP Based Protection .................................................................................. 16 2.3.7 L2 Multicast Function ...................................................................................... 16 2.3.8 Ethernet Transport Schemes .......................................................................... 16 2.4 Network Protections........................................................................................ 17 2.5 Main Features & Strengths ............................................................................. 18 2.5.1 Flexibility ......................................................................................................... 18 2.5.2 Reliability......................................................................................................... 18 2.5.3 Modularity and Scalability ............................................................................... 18 2.5.4 Ease of use ..................................................................................................... 19 2.5.5 Data Handling Capabilities.............................................................................. 19

3. System Application .............................................................. 20 3.1 Networking Capability ..................................................................................... 20 3.1.1 Termination and Multiplexing (TM) ................................................................. 20 3.1.2 Hubbing and Local Cross Connect ................................................................. 20 3.1.3 Linear .............................................................................................................. 21 3.1.4 Ring................................................................................................................. 21 3.1.5 Multiple Ring Closure...................................................................................... 22 3.2 Ethernet Service Applications ......................................................................... 23

4. System Description .............................................................. 24 4.1 Physical Structure and Module Construction .................................................. 24 4.1.1 Chassis Slot Naming....................................................................................... 24 4.1.2 SURPASS hiT 7035 interface options ............................................................ 25 4.2 Power Supply.................................................................................................. 25 4.3 FAN................................................................................................................. 25 4.4 System Controller (SC) ................................................................................... 26




4.5 System Interface Panel (SI) ............................................................................ 26 4.6 Cross-Connect Switching (CC) ....................................................................... 26 4.7 SDH Interfaces................................................................................................ 26 4.7.1 1x STM-4 Interface Board............................................................................... 26 4.7.2 2 STM-1 Interface Board............................................................................... 26 4.7.3 2 STM-1E (W/P) Interface............................................................................. 27 4.8 PDH and Data Service Interfaces ................................................................... 27 4.8.1 8x FE/L2 Service Interface Card..................................................................... 28 4.8.2 8x FE/T Service Interface Card....................................................................... 30 4.8.3 1x GE/T Service Interface Board .................................................................... 31 4.8.4 3 E3/DS3 (W/P) Interface Card..................................................................... 32 4.8.5 63 E1 (W/P) Interface Card........................................................................... 33 4.9 IMA Interfaces................................................................................................. 33 4.9.1 IMA 126 E1 (W/P) Interface Card ................................................................. 33 4.10 Optical Amplifier.............................................................................................. 34 4.11 User Channel (F1) .......................................................................................... 36 4.12 Engineering Order Wire (EOW) ...................................................................... 37 4.13 Miscellaneous Discrete Input/Output (MDI/MDO)........................................... 37 4.14 Introduction to Software licensing................................................................... 38 4.14.1 General Structure of new SW items................................................................ 38 4.14.2 Software license structure of SURPASS hiT 7035 ......................................... 40

5. Protection and Redundancy................................................. 42 5.1 Network Protection.......................................................................................... 42 5.1.1 MS-SPRing ..................................................................................................... 42 5.1.2 MSP ................................................................................................................ 42 5.1.3 SNCP.............................................................................................................. 43 5.1.4 LCAS............................................................................................................... 43 5.1.5 Ethernet Shared Protection Ring .................................................................... 44 5.1.6 Multiple Layers Protection............................................................................... 44 5.2 Equipment Redundancy and Protection ......................................................... 44 5.2.1 Redundant Power Supply ............................................................................... 44 5.2.2 Redundant Cross-Connect ............................................................................. 44 5.2.3 Electrical Interface Module Protection ............................................................ 44 5.2.4 Protection under Abnormal Condition ............................................................. 45 5.2.5 Software Fault Tolerance................................................................................ 45 5.2.6 Data Security .................................................................................................. 46

6. Technical Specification ........................................................ 46 6.1 Multiplexing Structure ..................................................................................... 46 6.2 SDH Overhead................................................................................................ 48 6.3 Interface Types ............................................................................................... 49 6.3.1 Electrical Interfaces......................................................................................... 50 6.3.2 Optical Interfaces ............................................................................................ 50 6.3.3 Management and Maintenance Interface ....................................................... 51 6.4 Interface Performance Specifications ............................................................. 51 6.4.1 Optical Interface Performances ...................................................................... 52




6.4.2 STM-1 Optical Interface Performance ............................................................ 53 6.4.3 STM-4 Optical Interface Performance ............................................................ 54 6.4.4 STM-16 Optical Interface Performance .......................................................... 55 6.4.5 Multi-rate CWDM interface Optical Performance............................................ 56 6.4.6 2.5G DWDM interface Optical Performance ................................................... 57 6.4.7 GE Optical Transmitter and Receiver Interfaces ............................................ 59 6.4.8 Electrical Interface Performances ................................................................... 61 6.4.9 Timing and Synchronization Performance ...................................................... 63 6.4.10 Jitter Performance........................................................................................... 63 6.4.11 STM-N Interface Output Jitter ......................................................................... 63 6.5 Timing ............................................................................................................. 66 6.6 Power Source ................................................................................................. 66 6.6.1 Power Supply.................................................................................................. 66 6.6.2 Power Consumption........................................................................................ 67 6.6.3 Cooling............................................................................................................ 67 6.6.4 Mechanical Structure ...................................................................................... 67 6.7 Environment Requirements ............................................................................ 67 6.8 Electromagnetic Compatibility......................................................................... 68 6.9 Vibration Tests ................................................................................................ 69 6.9.1 Shipping Test .................................................................................................. 69 6.9.2 Office Test....................................................................................................... 69 6.10 Alarms and Events.......................................................................................... 69 6.10.1 Alarm Types.................................................................................................... 69 6.10.2 Alarm Severity Level ....................................................................................... 70 6.10.3 Alarm Reports ................................................................................................. 70 6.10.4 Events ............................................................................................................. 70

7. Standard Compliance .......................................................... 73

8. Appendix 1: Definitions and Abbreviations .......................... 75

9. Appendix 2: Basis Technologies.......................................... 79 9.1 Generic Framing Procedure (GFP)................................................................. 79 9.2 Virtual Concatenation (VCat) .......................................................................... 81 9.3 Link Capacity Adjustment Scheme (LCAS) .................................................... 82 9.4 RPR (Resilient Packet Ring)........................................................................... 82 9.5 Ethernet Functions and Services .................................................................... 83

10. Appendix 3: Related Documents ......................................... 84




List of Figures Figure 1 - Future Traffic Growth.................................................................................................... 9 Figure 2 - SURPASS hiT 7035 chassis ......................................................................................10 Figure 3 SURPASS hiT 7035 Physical Structure.....................................................................11 Figure 4 - Three Ethernet data transmission methods in SURPASS hiT 7035 ring ...................17 Figure 5 - SURPASS hiT 7035 termination and multiplexing capability .....................................20 Figure 6 - SURPASS hiT 7035 termination and multiplexing capability .....................................21 Figure 7 - SURPASS hiT 7035 linear network configuration ...................................................... 21 Figure 8 - SURPASS hiT 7035 2-fiber MS-SPRing application ..................................................22 Figure 9 - Multiple Ring closure at a single SURPASS hiT 7035 node ...................................... 22 Figure 10 - SURPASS hiT 7035 Chassis view ...........................................................................24 Figure 11 - SURPASS hiT 7035 chassis slot naming.................................................................24 Figure 12 - SURPASS hiT 7035 Cards List ................................................................................25 Figure 13 - Functional block diagram of 2 STM-1E (W/P) card protection ...............................27 Figure 14 - 8 FE/L2 card functional block diagram ...................................................................29 Figure 15 - 8 FE/L2 interface card external interfaces..............................................................29 Figure 16 - 8 FE/L2 card LEDs .................................................................................................30 Figure 17 - 8 FE/T card functional block diagram.....................................................................30 Figure 18 - 8 FE/T interface card external interfaces................................................................ 31 Figure 19 - 8 FE/T card LEDs ...................................................................................................31 Figure 20 - 1 GE/T service board module functional block diagram.........................................32 Figure 21 - Functional block diagram of 3 E3/DS3 (W/P) card protection................................32 Figure 22 Functional block diagram of IMA (W/P) card protection ...........................................33 Figure 23 OA module functional building block diagram .........................................................34 Figure 24 OA module safty procedure .....................................................................................36 Figure 25 OA card external interfaces .....................................................................................36 Figure 26 OA card LEDs .......................................................................................................... 36 Figure 27 External XOW box ...................................................................................................37 Figure 28: Software license structure in Next Generation Metro ................................................39 Figure 29: Software license structure of SURPASS hiT 7035 ....................................................40 Figure 30: Software license structure of SURPASS hiT 7035 E1 Extension shelf ..................41 Figure 31 - Cross-Connect Multiplexing Structure (ITU-T G.707) .............................................. 46 Figure 32 - Terminated Mapping Structure .................................................................................47 Figure 33 - Payload Mapping ...................................................................................................... 47 Figure 34 SURPASS hiT 7035 supported SDH overhead process .........................................49 Figure 35 SURPASS hiT 7035 Interface Types.......................................................................49




Figure 36 - SURPASS hiT 7035 optical service interfaces supported........................................51 Figure 37 - STM-N Optical Interface Parameters and Application Codes ..................................52 Figure 38 - SURPASS hiT 7035 STM-1 Optical Interface Specifications ...................................53 Figure 39 - SURPASS hiT 7035 STM-4 Optical Interface Specifications ...................................54 Figure 40 - SURPASS hiT 7035 STM-16 Optical Interface Specifications.................................55 Figure 41 - SURPASS hiT 7035 CWDM Optical Interface Specifications ..................................57 Figure 42 - SURPASS hiT 7035 DWDM Optical Interface Specifications ..................................58 Figure 43 - SURPASS hiT 7035 DWDM Wavelenthes...............................................................58 Figure 44 - 1000 Base-SX transmitter interface parameters ......................................................59 Figure 45 - 1000 Base-SX receiving interface parameters.........................................................60 Figure 46 - 1000 Base-LX Transmitter interface parameters .....................................................60 Figure 47 - 1000 Base-LX receiver interface parameters...........................................................60 Figure 48 - 2048 kbit/s Electrical Interface Parameters..............................................................61 Figure 49 - Electrical Interface Output Signals Bit Rate Allowable Deviation............................. 62 Figure 50 - Electrical Interface Allowable Input Attenuation .......................................................62 Figure 51 - Electrical Interface Allowable Input Port Frequency Deviation................................. 62 Figure 52 - Electrical Interface Input Port Anti-interference Capability .......................................62 Figure 53 - Timing Output Jitter .................................................................................................. 63 Figure 54 - Internal Timing Source Output Frequency ...............................................................63 Figure 55 - STM-1/-4/-16 Interface Output Jitter.........................................................................64 Figure 56 - STM-1 Interface Jitter Tolerance ..............................................................................64 Figure 57 - STM-4 Interface Jitter Tolerance ..............................................................................65 Figure 58 - STM-16 Interface Jitter Tolerance ............................................................................65 Figure 59 - PDH mapping jitter generation specification ............................................................65 Figure 60 - SURPASS hiT 7035 PDH interface combined jitter generation spec....................... 66 Figure 61 - SURPASS hiT 7035 Environment Requirements.....................................................68 Figure 62 - SURPASS hiT 7035 Electromagnetic Compatibility Requirements ......................... 68 Figure 63 - Shipping Test Standards ..........................................................................................69 Figure 64 - Office test standards................................................................................................. 69 Figure 65 - Management Events.................................................................................................71 Figure 66 - Hardware Events ...................................................................................................... 71 Figure 67 - Software Events........................................................................................................ 72 Figure 68 - GFP mapping............................................................................................................ 80 Figure 69 - Comparison between GFP and PPP........................................................................81




1. Introduction 1.1 Editorials

This document is a technical description for the product SURPASS hiT 7035. The technical descriptions of other products of the SURPASS hiT 70 series are also available. This document is not a marketing document. The target of this document is to inform on detail about the product, product features and the application in the network environment.

It is not a document for advertisement purposes but it is useful to inform our customer in detail in the after sales period. For marketing and advertisement related product information please contact the sales department.

If the reader is looking for information on the basis technologies please refer to 9 Appendix 2: Basis Technologies.

1.2 Next Generation SDH

For almost two decades, Synchronous Digital Hierarchy (SDH) has been the preferred transport technology over optical fibers. SDH is the dominant transport protocol in virtually all long-haul networks (voice and data) as well as in metro networks that were originally developed for voice traffic. As a resilient, well-understood transport mechanism, SDH has stood the test of time. Its reliability is unsurpassed. The ability of SDH to support 50-msec switching to backup paths, combined with extensive performance monitoring features for carrier-class transport.

Legacy SDH was designed mainly to transport circuit oriented services like voice and as such is an inherently rigid and inefficient method for transporting data. Traditionally a single wire speed Gigabit Ethernet service (1.25G) will be allocated to one STM-16 channel (2.5G). This means 48 % of the of this STM-16 pipe remains as idle capacity.

1

10

100

1000

10000

2000 2002 2004 2006 2008 2010

Tbit/s Phone

Internet

Intranet WAN

Source: Siemens AG




Figure 1 - Future Traffic Growth

The phenomenal growth in bandwidth, connectivity and content generated by the Internet, Intranet and broadband applications, has made native data transfer a very important criteria for telecommunication infrastructure (see Figure 1). Ethernet has become the de facto standard for enterprise networks. In Storage Area Networks (SAN), ESCONTMP, FICONPTMP and Fiber Channel are by far todays most dominating technology as well.

The solution is Next Generation SDHtechnology that transforms rigid, circuit-oriented SDH networks to a universal transport mechanism that is optimized for both voice and data. The technology enables carriers to keep up with growing demands for bandwidth, to efficiently carry both streaming and bursty traffic, and adapt to constantly changing traffic patterns. Multiple protocols and thus services are supported: from basic TDM voice, Ethernet, as well as SAN.

1.3 SURPASS hiT 70 series

Siemens has introduced a new range of equipment that makes the promise of Next Generation SDH a reality: the SURPASS hiT 70 series. This platform provides the flexibility of true packet switching and Ethernet transport, while operating with the inherent reliability of SDH. Multiple network elements are integrated and consolidated into a single compact unit. The efficiency of this approach, together with extensive use of highly integrated components allows the SURPASS hiT 70 series to be offered at lower costs than current solutions.

Data + Voice = SURPASS hiT 70 series

In order to address the varying needs and requirements of carriers carrier, carrier and enterprise, the SURPASS hiT 70 series consists of a diverse range of products, namely:

SURPASS hiT 7080 ADM / CC multiple STM-64 SURPASS hiT 7070 SC/DC ADM / CC, multiple STM-64 SURPASS hiT 7060 HC ADM 64, multiple STM-16 SURPASS hiT 7060 ADM, multiple STM-16 SURPASS hiT 7050 CC ADM 16, multiple STM 4 SURPASS hiT 7050 FP ADM, multiple STM 1/4 SURPASS hiT 7035 ADM 16/4/1, multiple STM 4 upgradeable to STM16 SURPASS hiT 7030 ADM 4/1 modular SURPASS hiT 7025 ADM 16/4/1, multiple STM 4 upgradeable to STM16 SURPASS hiT 7020 ADM 4/1 single board CPE




This Technical Description covers SURPASS hiT 7035, only. For detailed description of the other product please refer to 382H10 383HAppendix 3: Related Documents.

2. SURPASS hiT 7035 Overview 2.1 Overview

SURPASS hiT 7035 is a compact carrier class full blown STM-4/-1 add-drop-multiplexer which can be upgraded to a compact STM-16 ADM.

SURPASS hiT 7035 supports core equipment protection with no single point of failure, and PDH electrical protection.

It offers rich Ethernet features.

Applications:

Optimized for SDH applications with data capabilities In transmission networks of mobile network Central office STM-16/-4/-1 add drop multiplexer High-end enterprise services

SURPASS hiT 7035 offers a High Order cross connection capacity upto 15.2G and a Low Order cross connection capacity up to 5G.

Figure 2 - SURPASS hiT 7035 chassis

Surpass hiT 7035 offers a powerful and cost-effective product design for PDH, SDH and data applications independent if these applications capabilities are requested for use in central offices, fixed part of mobile networks or in combination with high-end enterprise services.

SURPASS hiT 7035 supports the complete range of PDH and SDH interfaces ranging from E1, E3/DS3, STM-1 el./opt. to STM-4 and even STM-16. It provides a full suite of




SDH functions including mapping, multiplexing, cross-connection and various protection schemes.

SURPASS hiT 7035 has a modular and scalable design, enabling a pay-as-you-grow deployment plan. The system can be initially deployed as a low cost, modest capacity system, and then enlarged to a high capacity, multi-service system. A large variety of service modules ensure a cost-effective match with service demands of today while retaining superior flexibility to meet future service requirements.

Its advance software architecture design results in a highly fault-tolerant system. Combined with built-in hardware redundancies, SURPASS hiT 7035 achieves carrier-class reliability with 99.999% availability.

The system is fully compliant with ITU-T and/or IEEE standards, and is inter-operable with other standards-based SDH, multi-service transport, and data communication products.

Utilizing SURPASS hiT 7035 in combination with the multi-service capabilities of Siemens TNMS network management system, service providers can cost-effectively grow their embedded base networks or launch new networks

2.1.1 Physical Structure

The physical dimensions of SURPASS hiT 7035 chassis are 403mm (wide) 486mm (high) 240mm (deep) (300mm back to door), which is compliant to 19 and 21 inch industry standards.

Figure 3 SURPASS hiT 7035 Physical Structure

The dimension of physical cards is:




Long cards, SC = 253 mm x 264 mm x 30 mm

Short cards, PWR = 238 mm x130 mm x 30 mm

Long IO (1-4) = 229mm x 329mm x 33 mm

SI, Short IO (5-7) = 198 mm x 130 mm x 33 mm

FAN = 225 mm x 245 mm x 52 mm

All external interfaces have front access.




2.1.2 Cross Connection and Switching Capability

SURPASS hiT 7035 supports two types of cross connection and switching capabilities:

ADM-4/-1: 7.2G/2.5G CC with 1x STM-4/-1 line interface:

HOCC: (7.2G) LOCC: (2.5G)

ADM-16/-4: 15.2G/5 CC with 1x STM-16/-4 line interface:

HOCC: 15.2G LOCC: 5G

2.1.3 Line/Service Interface

SURPASS hiT 7035 provides the following line interfaces:

1. SDH: 1 STM-4 Optical Line Interface Board 2. SDH: 2 STM-1 Optical Interface Board 3. SDH: 2 STM-1E (W/P) Electrical Interface Card 4. SDH: 2 STM-1E PaddleCard 5. PDH: 3 E3/DS3 (W/P) interface card 6. PDH: 3 E3/DS3 Paddle 7. PDH: 63 E1 (W/P) client interface card 8. PDH: 63 E1 75ohm Paddle 9. PDH: 63 E1 120ohm Paddle 10. ATM-IMA 126xE1 interface card

11. IP/Ethernet: 8 FE/L2 interface card 12. IP/Ethernet: 8 FE/T Ethernet interface card 13. IP/Ethernet: 1 GE/T interface card 14. Optical Amplifier cards (13, 15 and 18 dBm)

15. Optical Pre-Amplifier card (20dB)




2.2 Data Capabilities

SURPASS hiT 7035 supports GFP (ITU-T G.7041 / Y.1303) encapsulation for Ethernet data.

SURPASS hiT 7035 supports VC-12-nv, VC-3-nv and VC-4-nv virtual concatenation (ITU-T G.707 / Y.1322) efficiently mapping data traffic into SDH payload. SURPASS hiT 7035 also supports LCAS (G.7042) at VC-12-nv, VC-3-nv and VC-4-nv level, which provides dynamic bandwidth adjustment.

SURPASS hiT 7035 provides SDH network protection functions including Multiplex Section Shared Protection Ring, Multiplex Section Protection 1 + 1 unidirectional/bi-directional, and Sub-Network Connection Protection (SNCP) at VC-12/-3/-4 levels.

2.3 Advanced Data Service Support

SURPASS hiT 7035 supports the following Layer 2 data functions:

1) IEEE 802.1Q (VLAN)

2) Input information limiting

3) Class of Service

4) GFP

5) VCAT and LCAS

6) RSTP

7) Layer 2 multicast

8) ESR

2.3.1 IEEE 802.1Q (VLAN)

SURPASS hiT 7035 supports Ethernet switching function, which is in compliance with IEEE Standard 802.1Q. SURPASS hiT 7035 supports VLAN on a per port basis. Each data port can be enabled or disabled for VLAN function.

At the ingress, each port can be set either to accept both VLAN-tagged and untagged frames, or to accept only the VLAN-tagged frames depending on the application requirements. At the egress, each port can be set to remove the VLAN tags or keep the VLAN tags. It is also possible to assign each port a PVID (Port-based VLAN ID), which will be inserted to the untagged frames as a VLAN ID when the frames come into the port. In addition, each port can be put into one or more VLANs by assigning a VLAN list to it, allowing different customers or different applications to share the same port. All services within the specific VLAN in the list can dynamically share the bandwidth of the port and still retain security. If the port belongs to a VLAN, the frames of that VLAN will be able to pass-through the port; otherwise the frames will be discarded.




Optionally, each port can be set to transparent mode, meaning that no switching functions will be performed on the frames. In this case, the pairing of one LAN (customer) port and one WAN (internal uplink) port must be established.

2.3.2 Input Information Rating Limiting

SURPASS hiT 7035 supports Input Rate Limiting function on a port basis or a VLAN basis.

An input information rate-limiting feature allows the one to control the maximum bandwidth an end user can obtain from the network. The minimum rate is 128 Kbit/s, and the bandwidth incremental granularity is as low as 128 Kbit/s.

2.3.3 Class of Service

SURPASS hiT 7035 supports 802.1p CoS at a port basis or a VLAN basis.

At the ingress of every port, there is a buffer to accommodate the input burst when the output port is congested. The memory for buffering is shared among all ports on a card, and the total capacity is up to 16 Mbytes. At the egress of every port, there are four queues, which can be assigned with different priorities or weights. The scheduling scheme can be set either to strict policing or Weighted Round-Robin.

2.3.4 GFP Data Encapsulation

SURPASS hiT 7035 incorporates advanced Generic Framing Procedure (GFP) (G.7041 / Y.1303) mapping scheme to encapsulate Ethernet traffic into SDH payloads. GFP encapsulated data is then mapped into SDH payloads using Virtual Concatenation techniques of ITU-T standard G.707/Y.1322. This process provides the most efficient mapping of the packets and the greatest bandwidth

2.3.5 Virtual Concatenation and LCAS

SURPASS hiT 7035 supports VC-12-nv, VC-3-nv and VC-4-nv. The VC provides fine-tuned SDH pipes to match the needs of packet and to boost carriers traffic-handling scalability and efficiency. The system can accommodate up to 48ms (for all transparent cards) or 32 ms (for FE/L2 card) delay deference between the fastest VC-4 member and the slowest VC-4 member and accommodate 16 ms delay deference between the fastest VC-12 member and the slowest VC-12 member.

SURPASS hiT 7035 supports LCAS. The combination of VCAT and LCAS provide soft protection schemes. LCAS provides dynamic adjustment of the size of a virtually concatenated group of channels.




2.3.6 RSTP Based Protection

The Rapid Spanning Tree protocol acc. IEEE 802.1w and MSTP acc. IEEE 802.1s prevent against loops at the WAN side of the network while providing L2 protection.

2.3.7 L2 Multicast Function

SURPASS hiT 7035 supports Layer 2 multicast functionality including pre-provisioned static multicast, or IGMP Snooping controlled dynamic multicast.

2.3.8 Ethernet Transport Schemes

SURPASS hiT 7035 supports three Ethernet data transport schemes, which are described below:

Point-to-point transparent: In this mechanism, dedicated bandwidth is assigned to end-to-end traffic. The Virtual Concatenation technique is used in the SURPASS hiT products to provide more efficient bandwidth assignment. This scheme is more suitable for high security requirements and delay-sensitive traffic as each traffic has a dedicated bandwidth. The drawback is the limited bandwidth efficiency. As we know, Ethernet traffic has bursty characteristics and is delay insensitive. Statistical multiplexing is usually employed in data network to achieve bandwidth efficiency. Dedicated bandwidth per data flow is not efficient for bursty traffic transmission.

Layer 2 aggregation In this mechanism, the Ethernet switching and aggregation is performed at the NE to allow local user traffic to be aggregated into a higher rate SDH trunk. The statistical multiplexing of multiple Ethernet traffic makes the bandwidth utilization more efficient.

Ethernet Shared Ring (ESR) The ESR (Ethernet Shared Ring) is a variable length packet switched multi-node ring.

o Data traffic shares the same ring bandwidth o Nodes on ring have IEEE802.3 Address o Header has IEEE802.3 type Destination Address and Source Address o MAC and VLAN based switching o Destination strips unicast packets o Drop and continue for broadcast and multicast o Source node strips broadcast packets o Class of Service indication in the header supports multiple traffic

priorities on ring




o Rapid Spanning Tree protocol (IEEE 802.1w and IEEE802.1s) to prevent building loops and to provide layer 2 protections in ring configuration.

The ESR (Ethernet Shared Ring) technology can efficiently add/drop or duplicate the data traffic on a ring. This dramatically increases the transport efficiency when compared with the traditional point-to-point networking technology that may lead to back-haul traffic and inefficient multicast traffic.

ESR is based on the RSTP technology to prevent the Ethernet Loop and Broadcast Storm. If using the Multi-STP, functionality of the spatial reuse, different VLAN can go through different path, and can balance the traffic between the different paths.

(c) Ethernet Shared Ring(a) Point-to-point(transparent)

(b) Local Aggregation

3WANinterfaces

9WANInterfaces

3 LANinterfaces

2WANinterfaces

3 LANinterfaces

3 LANinterfaces

Local muxing

Figure 4 - Three Ethernet data transmission methods in SURPASS hiT 7035 ring

2.4 Network Protections

SURPASS hiT 7035 provides traffic protection in the SDH layer:

MS-Spring at STM-4 and STM-16 level, 1+1 MSP at STM-1, STM-4 and STM-16 level, Both of SNCP/I and SNCP/N at LO VC-12, LO VC-3, HO VC-4 and HO VC-4-4c

levels

SURPASS hiT 7025 also provides traffic protection in the Ethernet layer:

LCAS soft protection (Diverses routing), Link aggregation at LAN and WAN side.




2.5 Main Features & Strengths 2.5.1 Flexibility

The hiT 7035 offers the flexibility to be used as full blown ADM-1/ ADM-4 to compact ADM-16.

Interconnection to your SDH network can be at STM-16, STM-4 or STM-1 level.

For reach of very long and ultra long distance applications without use of intermediated regenerators optical booster and preamplifiers are offered. Maximum distances up to 160 km (in compliance with ITU-T Recommendation G.692 U-16.2/3) can be achieved.

2.5.2 Reliability

SURPASS hiT 7035 is due to its full redundancy concept a very reliable product:

The system is based on the standardized SDH technology, which is a market proven networking technology.

Highly integrated components guarantee for highest system reliability:

Optical transmission can be protected using Multiplex Section Shared Protection Ring, Sub-Network Connection Protection (SNCP), and Multiplex Section Protection 1+1 unidirectional / bidirectional.

Thermal Sensor detects if the internal temperature exceeds the threshold and raise the over temperature alarm.

2.5.3 Modularity and Scalability

SURPASS hiT 7035 is of modular design and allows therefore a high configuration versatility.

All optical line interfaces uses SFP optical modules. This modularity reduces the spare part stock and increases the flexibility of the system as on the same card different types of SFP modules can be used on different ports (e.g. short haul and long haul).

The scalability from full blow ADM-1/ ADM-4 to compact ADM-16 allows for flexible growth with evolving networking needs.

SURPASS hiT 7035 offers the ability to interface with all SIEMENS and other vendors optical networking systems.

The same applies for data processing equipment as the equipment offers standardized Ethernet interfaces (10/100 BaseT or Gigabit Ethernet).




2.5.4 Ease of use

All optical and electrical interfaces have front access.

Support for Small Form-factor Pluggable (SFP) optical interfaces for STM-16, STM-4, STM-1, and GE SFP optical interfaces, allow convenient field replacement of the optical interfaces. As the network evolves, different optical modules can be inserted to meet the changing network environment and growth.

Additional, state-of-art electrical SFP module is supported for STM-1 interface card and GE card.

2.5.5 Data Handling Capabilities

Support for 4094 VLANs per L2 switch card in order to transport end-user data securely with a variety of Class-of-Service options that allow differentiated services between users or between applications with a given user.

Ethernet traffic is encapsulated into SDH using either GFP. This provides the most advanced and efficient way to carry data traffic within a SDH network.

Virtual Concatenation is used to provide scalable, efficient, compatible, and resilient use of SDH to move traffic. This greatly increases the useable bandwidth of the network.




3. System Application SURPASS hiT 7035 multi-service access platform is a highly flexible product capable of supporting a variety of network applications like bandwidth access, service-on-demand and LAN services.

SURPASS hiT 7035 can be configured in such a way that it supports a large variety of network applications with any mix of PDH, SDH and Ethernet services.

3.1 Networking Capability

SURPASS hiT 7035 provides high flexibility and compactness supporting a large variety of configurations for STM-16, STM-4 and STM-1 network applications:

Termination and multiplexing Small local cross connect Linear Ring Multi Ring closure

3.1.1 Termination and Multiplexing (TM)

SURPASS hiT 7035 system can be configured to function as a hub-Terminal at STM-16, STM-4 or STM-1 level.

Figure 5 - SURPASS hiT 7035 termination and multiplexing capability

3.1.2 Hubbing and Local Cross Connect

SURPASS hiT 7035 system can be used to function as a small local cross-connect system (or can be applied in hubbing configurations). This allows various hybrid network architectures with a variety of connection speeds and network topologies such as rings, multi-rings, subtending rings, or linear structures. This eliminates the need for back-to-back terminals and greatly increases network flexibility.

SURPASS hiT 7035 STM-1/-4/16

E1E3/DS310/100M GESTM-1 ESTM-1/-4ATM IMA




SURPASS hiT 7035 can serve a cluster of other terminals, for example SURPASS hiT 7030 or other vendors products that have standard SDH interfaces, located at remote sites, through point-to-point connections with optional 1+1 MSP protection. It also serves as an aggregation Hub for Subtending Rings. This feature eliminates back-to-back terminals that would be required to serve multi-ring connections using equipment with less ring-closure capabilities.

Figure 6 - SURPASS hiT 7035 termination and multiplexing capability

3.1.3 Linear

SURPASS hiT 7035 supports STM-16/-4/-1 linear network topology as depicted in figure below:

Figure 7 - SURPASS hiT 7035 linear network configuration

3.1.4 Ring

Rings provide redundant bandwidth and/or equipment to ensure system integrity in the event of any transmission or timing failure, including a fiber cut or node failure. A ring is

hiT7035 TM

hiT7035 ADM

hiT7035 TM




a collection of nodes that form a closed loop, in which each node is connected to adjacent nodes.

SURPASS hiT 7035 supports two-fiber MS-SPRing. Figure below shows a SURPASS hiT 7035 ring example.

Figure 8 - SURPASS hiT 7035 2-fiber MS-SPRing application

When using the MS-SPRing protection mechanism, rings ranging from 3 to 16 nodes are supported (the maximum of 16 nodes in a ring is specified in G.841). They perform automatic protection switching (revertive) in less than 50 milliseconds.

3.1.5 Multiple Ring Closure

A single network element as depicted in 384HFigure 9 can interconnect two SURPASS hiT 7035 rings working at different or the same line speeds.

Figure 9 - Multiple Ring closure at a single SURPASS hiT 7035 node

2-Fiber STM-4/16 ring

hiT7035

hiT7035 hiT7035

hiT7035

Ring 1

(STM-1/4)

hiT7035

hiT7035 hiT7035

hiT7035

hiT7035

hiT7035

hiT7035Ring 2

(STM-4/16)




3.2 Ethernet Service Applications

SURPASS hiT 7035 provides data transport over SDH, and offers various data applications in addition to traditional TDM applications. This offers service providers a cost-effective, simple, and reliable multi-service solution for their customers.

SURPASS hiT 7035 can provide aggregation from any port to any port, and then connect it to a router. SURPASS hiT 7035 can support up to 4094 VLANs on the Ethernet port allowing bandwidth to be shared for different customer applications depending on the priority or security required for the application.

Normally a user does not require all of the available bandwidth, for instance 600 Mbit/s which can be provided by a VC-4-4v. By using the VLAN capability, the whole bandwidth of 600 Mbit/s can be allocated across multiple users, giving each a committed information input rate. Hence, the bandwidth of the physical link can be more effectively utilized.

In addition, using Virtual Concatenation and LCAS can more accurately adjust the physical bandwidth to meet customer demands, as opposed to traditional contiguous concatenation. This further enhances bandwidth efficiency.

Additionally to being able to provide precise customer-required bandwidth levels, four queues for service priority can be assigned per Port/VLAN. This enables additional flexibility in pricing and over-subscription service plans.

By using the VLAN function, the operator can provide Transparent VLAN Service (TVS) for different customers. For example, a GE user or multiple 10/100M Ethernet users can be aggregated and transported while retaining secure connections.

The use of GFP data mapping techniques within SURPASS hiT 7035 greatly improves the bandwidth efficiency of the connections.




4. System Description 4.1 Physical Structure and Module Construction

SURPASS hiT 7035 is designed to fit ETSI (21 inch) and EIA 300 (19 inch) requirements. A SURPASS hiT 7035 chassis view is shown below:

Figure 10 - SURPASS hiT 7035 Chassis view

SURPASS hiT 7035 sub-rack is structured using a vertical oriented, multi-card chassis.

4.1.1 Chassis Slot Naming

SURPASS hiT 7035 chassis slot and slot naming is shown below:

LC stands for Line Card, CC stands for Cross Connect Card, SC stands for System Controller, IO stands for Input/Output Card, SI stands for System Interface and PWR stands for Power filter and converter module.

Figure 11 - SURPASS hiT 7035 chassis slot naming




4.1.2 SURPASS hiT 7035 interface options

In the following table all interface options provided by SURPASS hiT 7035 are listed.

Card Name Allowable Card Location

Maximum number of ports

[per system]

Cross Connect Card with 1xSTM-4/-1 CC1, CC2 1 [2]

Cross Connect Card with 1xSTM-16/-4 CC1, CC2 1 [2]

1 STM-4 Line Interface Board LC6 to LC9 1 [4] 2 STM-1 Line Interface Board LC6 to LC9 2 [8] 2 STM-1E Interface Board LC6 to LC9 2[8] 8 FE/T Card LC6 to LC9 8 [32] 8 FE/L2 LC6 to LC9 8 [32] 1 GE/T LC6 to LC9 1 [4] 3 E3/DS3 LC6 to LC9 3 [12 63 E1 LC1 to LC5 63 [252] ATM IMA LC1 to LC 4 2[8]

Figure 12 - SURPASS hiT 7035 Cards List

Both the optical and electrical interface access is on the front of the sub-rack. Card faceplates are provided for all cards with information on card type, LED description, and unique serial number on each label. Faceplate covers are available for empty slots.

4.2 Power Supply

SURPASS hiT 7035 DC power supply provides two -40V DC to -72V DC power supplies to offer full equipment redundancy.

4.3 FAN

There is one fan assembly on the bottom of the chassis. The fan working status is indicated at the interface panel. The fan assembly is replaceable when the system is in service.




4.4 System Controller (SC)

SURPASS hiT 7035 has a dedicated system controller. This controller has on its front side several service interfaces: management, console, MDI/MDO, etc.

4.5 System Interface Panel (SI)

The system interface panel provides the synchronization interfaces (T3 and T4).

4.6 Cross-Connect Switching (CC)

The CC card provides a cross connect function. To fit the customers different application economically, the SURPASS hiT 7035 provide two types of CC cards: one with 15.2G/5G with 1 STM-16/-4, one with 7.2G/2.5G with 1 STM-4/-1.

4.7 SDH Interfaces

SURPASS hiT 7035 provides following SDH interfaces:

1 STM-4 Interface Board 2 STM-1 Interface Board 2 STM-1E interface Card

4.7.1 1x STM-4 Interface Board

This board provides 1 optical interface with a signal rate of 622 Mbits/s. The STM-4 interface is fully compliant with ITU-T G.707 and G.957 standards. This module supports hot swappable SFP optical module.The STM-4 optical interface on this board can be paired with any STM-4 interface on another board for 2-fiber STM-4 ring closure. The STM-4 ring supports MS-SPRING, MSP, and SNCP protection function.

4.7.2 2 STM-1 Interface Board

This board provides 2 optical interfaces with a signal rate of 155 Mbits/s. The STM-1 interfaces are fully compliant with ITU-T G.707 and G.957 standards. This module




supports two hot swappable SFP optical modules. On STM-1 level MSP and SNCP protection is supported.

4.7.3 2 STM-1E (W/P) Interface

This card offers 2 STM-1E electrical interface, and supports redundant (1+1) 2 STM-1E card protection.

Using the redundancy option implement the following devices two 2 STM-1E functional cards and one 2 STM-1E I/O board. The 2 STM-1E functional card performs 2 STM-1E signal mapping and framing function.

The 2 STM-1E EC board provide 2 STM-1E interfaces. This board is connected to both 2 STM-1E (working) and 2 STM-1E (protection) card simultaneously. Under normal condition, the STM-1E client interface is connected to the 2 STM-1E (working) card. If the 2 STM-1E (working) card fails, the 2 STM-1E EC board will switch to the 2 STM-1E (protection) card. 385HFigure 13 depicts the functional block diagram of 2 STM-1E (W/P) card protection.

2x STM-1E transceiver & Framing function2 STM-1E EC

2 STM-1E (W)

2x STM-1E transceiver & Framing function

SC

SelectorRelay

To CC boardvia Backplane

2 STM-1E (P) To client equipment

Figure 13 - Functional block diagram of 2 STM-1E (W/P) card protection

4.8 PDH and Data Service Interfaces

SURPASS hiT 7035 supports the following service cards:

Data cards:

8 FE/L2 Service Interface Card 8 FE/T Service Interface Card




1x GE/T Service Interface Board

PDH cards:

3 E3/DS3 (W/P) Interface Card 63 E1 (W/P) Interface Card

4.8.1 8x FE/L2 Service Interface Card

This card provides 410/100M Base-T interfaces (RJ-45), One RJ45 can be used for two LAN ports, There are eight WAN ports on the network side. Up to 8x 10/100M traffic can be aggregated at WAN port side and forwarded to a SDH line interface for transmission with up to 4 VC-4 at the network / WAN side.

Ethernet over SDH functions by this card are:

Supports GFP encapsulation (ITU-T G.7041/Y.1303) Scalable bandwidth through VC-12-nv (n=1,,46) and VC-3-nv (n=1,2) LCAS support according ITU-T G.7042 Maximum Transmission Unit (MTU) 1800 bytes

The Layer 2 functions supported by this card are:

10/100Mbit/s Ethernet VLAN trunking VLAN and double VLAN tagging, providing increased number of VLANs Access Control List (ACL) based on MAC addresses Rapid Spanning Tree (802.1w) for the WAN ports, dramatically reducing

restoration time

Layer 2 multicast functions (including static provisioned multicast and IGMP Snooping multicast functions), saving bandwidth on applications such as multi-media video

Layer 2 aggregation function Providing per port/VLAN rate limiting function: the rate range of each port is

from 200kbps128kbps~100Mbps, and the rate provisioning granularity is 1kbps(128kbps)

Providing 802.1p QoS/CoS based on Ethernet port and/or VLAN




Layer 2Ouad

100Base-T PHY

EOS(GFP)

VC-12-nv,VC-3-nv,VC-4-nv

4xVC-4 to XCT via backplane

4x RJ-45connectors

Figure 14 - 8 FE/L2 card functional block diagram

Each LAN and WAN interface has a buffer to support bursty data traffic transmission. The input buffer of the interface can accommodate up to 256 frames. Each interface has 8 output queues, each of which has a buffer that can accommodate up to 96 frames to be sent out. As each input buffer and output buffers are independently using the dedicated memory spaces, instead of sharing any common memory space, there will be no mutual influence between the input buffer and the output buffers.

Interface Description

4x RJ-45 connectors, each connector supports two channels of Fast Ethernet service via an external Ethernet splitter.

Standard compliance

10M BASE-T (IEEE 802.3)

100M BASE-T (IEEE 802.3u)

Data rate supported

10Mbit/s (half-duplex, full-duplex, flow control)

100Mbit/s (half-duplex, full-duplex, flow control) FE Electrical Interface

Cables:

Use of 4 ports only:

10/100 BASE-T: 100 Ohms two pairs shielded twisted pair cable (STP) and two pairs of unshielded twisted pair cable (Category 5 UTP). The reaching distance is up to 100m

Use of 8 ports:

10/100 BASE-T: 100 Ohms four pairs shielded twisted pair cable (Category 5) in combination with 2-in-1 RJ45 Splitterbox.

Figure 15 - 8 FE/L2 interface card external interfaces




Name Color Status Functional Description

On The link is up.

A green LED per interface indicates the

link up and down OFF The link is down.

ON Transmitting or receiving data.

(FE port LED)

A yellow LED per interface indicates the

activity OFF No data.

Figure 16 - 8 FE/L2 card LEDs

4.8.2 8x FE/T Service Interface Card

This card has 8 10/100M Base-T IEEE 802.3 compatible Ethernet interface ports, and can provide transparent transmission for up to 8x 10/100M connections. The total available bandwidth on the network side is 4 VC-4 equivalent.

Supports GFP encapsulation (ITU-T G.7041/Y.1303) Scalable bandwidth through VC-12-nv (n=1,,46) and VC-3-nv (n=1..3) LCAS support according ITU-T G.7042 Maximum Transmission Unit (MTU) 1800 bytes up to 9600 bytes (jumbo frame

support)

Even with minimal equipment investment, this Ethernet card still provides very attractive services to the end customers, like:

Scalable bandwidth without having to change interfaces A transparent LAN service that hides the complexity of the WAN for end users

(a WAN that looks like a LAN)

High availability LAN service because of end-to-end SDH protection switching

Octal 100Base-T

PHY

EOS (GFP, LAPS, VC-

12-nv, VC-3)

Network side:Total 4xVC4 bandwidth(to the backplane)

8x RJ-45connectors

Client side:Up to 8 FE signals

Figure 17 - 8 FE/T card functional block diagram





4x RJ-45 connectors, each connector supports two channels of Fast Ethernet service via an external Ethernet splitter.

Standard compliance

10M BASE-T (IEEE 802.3)

100M BASE-T (IEEE 802.3u)

Data rate supported

10Mbit/s (half-duplex, full-duplex, flow control)

100Mbit/s (half-duplex, full-duplex, flow control) FE Electrical Interface

Cables:

Use of 4 ports only:

10/100 BASE-T: 100 Ohms two pairs shielded twisted pair cable (STP) and two pairs of unshielded twisted pair cable (Category 5 UTP). The reaching distance is up to 100m

Use of 8 ports:

10/100 BASE-T: 100 Ohms four pairs shielded twisted pair cable (Category 5) in combination with 2-in-1 RJ45 Splitterbox.

Figure 18 - 8 FE/T interface card external interfaces


On

The link is up. A green LED per interface indicates the link up and down

OFF The link is down.

ON Transmitting or receiving data.

(FE port LED)

A yellow LED per interface indicates the activity OFF No data.

Figure 19 - 8 FE/T card LEDs

4.8.3 1x GE/T Service Interface Board

The board provides one 1000Base-X interface (1 SFP module).

Application:

GE p2p; Mapping into VC-4-Xv (X=1...4) or VC-3-Xv(X=112) payload for transmission.

Virtual mode enabled: The Ethernet side provides eight 10/100 Mbps virtual ports

VLAN aggregation function is used.

VC4, VC-3-Xv(X=13), VC-12-Xv(X=146) mapping is available.

The functional block diagram of this board is depicted in the following 386HFigure




Figure 20 - 1 GE/T service board module functional block diagram

4.8.4 3 E3/DS3 (W/P) Interface Card

This card has 3 E3/DS3 software configurable interfaces; each E3/DS3 signal is mapped into a Lower Order VC-3 and forwarded to line interface for transmission. The E3/DS3 interface uses CC4 connector.

387HFigure 21 depicts the functional block diagram of 3 E3/DS3 (W/P) card protection.

Mapping each E3/DS3 To VC-3 3 E3/DS3 EC

3 E3/DS3 (W)

Mapping each E3/DS3 To VC-3

SC

SelectorRelay

To CC boardvia Backplane

3 E3/DS3 (P)

Figure 21 - Functional block diagram of 3 E3/DS3 (W/P) card protection

The SURPASS hiT 7035 chassis supports 1:3 protection for the E3/DS3 card.




4.8.5 63 E1 (W/P) Interface Card

The 63 E1 interface card contains the following two types of long cards: (1) 63 E1 Function Card (2) 63 E1 EC (Electrical Connectors) Card with 75Ohm/120Ohm version connector. In the retiming mode, the transmitter eliminates wander and jitter in the incoming clock.

While the rate of the outgoing 2 Mbit/s or 2MHz signal is normally equal to the rate of the 2 Mbit/s or 2MHz signal going into the SDH network, occasionally this relationship disappears. A retiming function is necessary for suppression of jitter and wander that the 2Mbit/s signal suffers during transmission in SDH and which makes the signal useless for carrying the synchronous frequency to the PDH domain.

To retime an outgoing 2 Mbit/s or 2MHz signal, means simply to retime this signal with the internal clock of the multiplexer equipment in which the desynchronization takes place. This can be done by reading the recovered 2Mbit/s or 2MHz signal into an elastic store and timing the output of the elastic store with the system clock.

When the device is set in the retiming mode all jitter and wander due to the multiplexing or demultiplexing process in the transmission is eliminated.

4.9 IMA Interfaces 4.9.1 IMA 126 E1 (W/P) Interface Card

The IMA 126 E1 interface card contains the following two types of long cards: (1) IMA 126 E1 Function Card (2) 2x STM-1 IMA IO Card

2x STM-1 ATM IO

2xSTM-1 ATM

126xE1 IMA (P)

126xE1 IMA (W)

To CC board via Backplane

Figure 22 Functional block diagram of IMA (W/P) card protection




4.10 Optical Amplifier

This OA (Optical Amplifier) module provides uni-directional single optical amplifier function with optical performance monitoring capabilities.

Optical Amplifiers are available with 13, 15 or 18 dBm output power.

Additionally there is also a Pre-amplifier module available (20 dB).

These modules are designed to compensate losses in the entire C band and increasing therefore the span performance of the system without need for intermediated regerators. The module functional building block diagram is shown below.

EDFA Module

Embedded CPU

RS-232

FPGA

OA Card

Optical Signal IN

Optical Signal OUT

To SC (System Controller)

Figure 23 OA module functional building block diagram

The EDFA (Erbium Doped Fiber Amplifier) sub-module is the core building block for this card. It provides optical signal amplification function. With integrated fast digital circuit and advanced software, the EDFA can be configured to operate at APC, ACC or AGC mode.

APC (automatic power control) mode: In this mode, the optical output power is maintained constant by adjusting the laser pump current to compensate minor changes in OA input power, component aging, and temperature variation. This mode is mainly used in post-amplifier application.

AGC (automatic gain control) mode: In this mode, the OA provides constant




gain power by adjusting the pump laser current to compensate minor changes in component aging and temperature. This mode is mainly used in pre-amplifier application.

ACC (automatic current control) mode: In this mode, the pump laser current is maintained constant.

These modes can be set through software according to customers requirements. In addition, other significant parameters that need to be pre-set are:

Input optical power low threshold Output optical power low threshold Low and high temperature threshold for output power shutdown

This OA provides the following performances monitoring parameters:

OA Input Power (dBm), precision to 0.01dBm OA Output Power (dBm), precision to 0.01dBm OA Module Gain (dB), precision to 0.01dB OA Pump Power (mW), precision to 0.01mW OA module internal temperature, precision to 0.1 C degree OA module pump drive current, precision to 0.1 A OA power module power supply voltage, precision to 0.01V

This OA module board can be configured to use one of the following 4 EDFA sub-modules:

Booster 13dBm Booster 15dBm Booster 18dBm Pre-amp 20dB

All EDFA sub-modules above use single-stage or dual-stage un-cooled 980nm pump lasers.

OA Safety Procedures The OA module safety procedures supported are described in the table below.




Feature Description

ALS After 500ms or more of continuous presence of the LOS defect, the laser will automatically shutdown; the reduction of the optical output power at OA input port occurs within 800ms from the moment loss of optical signal occurs at OA output port. Whenever the OAs input signal vanishes, the OAs optical output signal will be shut down. When the input signal returns, the output power will be restored.

Automatic Link restore

- The minimum optical signal restore delay is 100s. - The activation for Transmitter /Receiver is less than 0.85s. - The maximum deactivation time of booster and preamplifiers is 100 ms. - The maximum activation time of an booster is 100 ms. - The maximum activation time of preamplifier is 300ms.

Manual Restore

"Manual restart" or "Manual restart for test" can only be activated when the laser is shut down.

Figure 24 OA module safty procedure


Connector Type LC connector

Pre-amp -35 to -10 dBm Optical Interface Input power range Booster

amp. -6 to +3 dBm

Figure 25 OA card external interfaces


ON There are fault conditions presented in this card. Fault Red OFF This card is in normal condition.

ON The OA optical link is normal. Link 1 Green

OFF The optical link is down.

Figure 26 OA card LEDs

4.11 User Channel (F1)

Two 64kbps G.703 interfaces are provided and the following SDH Overhead bytes can be allocated: E1, E2 and/or F1.




4.12 Engineering Order Wire (EOW)

The hiT 7035 uses VoIP (H.323) technology to provide the EOW function on a DCC channel or uses an external data network.

The hiT 7035 VoIP based EOW provides unicast and multicast calling, and broadcast communications.

Traditional XOW over E1/E2/F1 will be implemented via an external XOW box.

For hiT 7035:

There are one RJ45s on the SC card. Users may totally select all the channels of E1/E2 from the system. And will be terminated by the system.There is no limitation on the card or STM-N port level. Only one F1 channel can be selected at the same time. On external XOW Box, there is one V.11 access for F1 channel, and the physical interface is DB15. And there is one RJ11 accessed for phone.

SURPASS hiT 7025 / 7035

SURPASS hiT 70 XOW

RJ 45 Cable

EOWC

Phone Set

Figure 27 External XOW box

For more details please refer to the SURPASS hiT 7035 XOW technical description

4.13 Miscellaneous Discrete Input/Output (MDI/MDO)

The SURPASS hiT 7035 provides 8 miscellaneous discrete input points and 8 miscellaneous discreate output points (4 of MDOs are always used for rack alarm).

MDI is used to read the status of external alarm points. Both the MDI description and severities are provisionable on the management system. Any external equipment to be monitored must provide the electrical quivalent of a contact closure across the corresponding pairs. The MDI voltage specifications are as below:

MDI Voltage range: 0~ -75V Inactive: 0~ -10V Active: -18~ -75V




MDO is used to drive external devices. MDO actions are activated or deactivated manually by the management system. Miscellaneous discrete output points are hard contact, its contact rating as belew:

Max DC Voltage: 110VDC @ 0.3A Max AC Voltage: 125VAC @ 0.3A Max Current: 1A @ 30VDC

4.14 Introduction to Software licensing

Up to now SW licenses for Next Generation Metro equipment were un-recognized add-on items and the sales of these products have been dominated by HW selling. The SW license structure guarantees an optimized Network performance with minimum TCO (Total Cost of Ownership) by customized feature set. Within the hiT 70xx portfolio there are several features are being introduced like capacity based licenses, support of Matrix protection, support of extension shelves and ASON/GMPLS.

This SW license structure allows following equipment configuration principles:

Offer only what is actually required

Exclude non-mandatory features explicitly

Tailoring of SW bundles allows up-sell potential

Protect the individual SW value drivers by selling them separately

Do not automatically design & price all SW features for the whole network

4.14.1 General Structure of new SW items

The Software item structure implemented within the product line Next Generation Metro are divided into 3 general categories: mandatory SW license items, optional application feature SW license items and upgrade SW license items. These are further represented in the following document by a colour code indicated in the drawing below.




Mandatory SW items

Optional SW items

Upgrade SW items

SW Maintenance items

Figure 28: Software license structure in Next Generation Metro

Mandatory SW items

The mandatory Software items represent the basic functionality of the system, and one of these core licenses are mandatory to be equipped for each equipment core.

Optional SW items

The optional Software items are items that represent additional types of functionality. These can be:

Additional optional feature packages

Additional functionality related with HW configuration

Additional capacity

Upgrade SW items

The upgrade Software items are available for each individual product to provide release upgrades. Release upgrades are in general upgrades where the succeeding release contains a higher feature set. This is in general represented by a number in the release name of the product.

SW Maintenace items

The Software Maintenance items are available for each individual product to provide maintenance related services, namely to solve technical queries (to provide qualified answers and assistance for any general technical/operational queries), for trouble resolution (to handle customer reported suspected defects and o deliver workarounds




and/or final solutions) and to provide software updates (to ensure a regular, proactive, delivery of software update packages with respective release documentation).

4.14.2 Software license structure of SURPASS hiT 7035

SURPASS hiT 7035 is a versatile network element having the equipping option as ADM for STM-1/-4 (equipped with a small switch matrix) or as ADM for STM-4/-16 (equipped with a large switch matrix).

Therefore there are two different mandatory core licenses, an ADM-1/4 core license and a ADM-4/-16 license.

The main optional feature that SURPASS hiT 7035 offer is equipment protection to significantly increase the reliability of the network elements. Increased reliability is significant value add, therefore by equipping a switch matrix protection, a matrix protection license is needed.

Upgrade SW items are available to a release upgrade (from a release x.y to a release x.(y+1) or increase of x).

Figure 29: Software license structure of SURPASS hiT 7035




A special case exists for the SURPASS hiT 7035 Release 4.0. This equipment release only serves as E1 extension shelf for the systems SURPASS hiT 7060, hiT 7060HC and hiT 7080. For each extension shelf hiT 7035 Release 4.0 and 4.0.1 used along with one of the above mentioned network elements, an E1 extension shelf license is mandatorily required.

Figure 30: Software license structure of SURPASS hiT 7035 E1 Extension shelf




5. Protection and Redundancy 5.1 Network Protection

SURPASS hiT 7035 supports multiple layer network protection functions and multiple layer protection escalation. The network protection functions supported are:

MS-SPRing, in compliance with ITU-T G.841 MSP 1+1 protection, revertive or non-revertive modes, in compliance with ITU-

T G.841

SNCP at VC-12, VC-3, VC-4, VC-4-4c level in compliance with ITU-T G.841 Rapid Spanning Tree Protocol (RSTP) to provide Layer 2 Ethernet data

protection by converging data to another path, in compliance with IEEE 802.1w protocol

5.1.1 MS-SPRing

SURPASS hiT 7035 supports 2 fibers MS-SPRing at STM-4/-16 levels. The protection (detection and switching) is guaranteed to be finished within 50ms. The wait-to-restore time is user configurable with a default value of 5 minutes. The system also supports force switching and manual switching.

For example, in an STM-4 ring with the MS-SPRing function enabled, a total of 4 AU4s are divided evenly into 2 groups, working AU4s (time slots 1 and 2) and protection AU4s (time slots 3 and 4).

The SURPASS hiT 7035 MS-Spring implementation supports also low priority traffic by supporting NUT feature (Non-preempt-able Unprotection Traffic).

5.1.2 MSP

1+1 MSP (G.841/Clause 7) protects an STM-N link between two adjacent SDH MS (multiplexing section) elements.

SURPASS hiT 7035 supports 1+1 multiplex section protection (MSP) on all STM-N optical ports. The MSP 1+1 can be either uni-direction or bi-direction. The protection time is less than 50ms.

SURPASS hiT 7035 also supports Manual Switch and Forced Switch of MSP, revertive and non-revertive MSP.




5.1.3 SNCP

SURPASS hiT 7035 supports Sub-Network Connection (SNC) protection (ITU-T G.841). It is available at VC-12, VC-3, VC-4 and VC-4-4c level. SURPASS hiT 7035 supports VC-4/-3/-12 SNC protection between any pair of VC-4/3/12s in any STM-N cards and also supports VC-4-4c SNC protection in STM-4 cards and STM-16 ports.

The protection switch time for SNC protection is less than 50 ms.

The SNC protection scheme supported in SURPASS hiT 7035 is an inherently monitored SNCP (SNCP/I) or non-intrusively monitored SNCP (SNCP/N). The SNCP protected VC-4s are protected against AIS or LOP at the AU-4 level (server layer defects) and against misconnections (trace identifier mismatch or VC-4 dTIM), disconnections (unequipped signal or VC-4 dUNEQ), or signal degradations (VC-4 dDEG) in the VC-4 itself. Likewise, SNCP protected VC-3s and VC-12s are protected against TU3/12-AIS, TU3/12-LOP (server layer defects), VC-3/12 dTIM, dUNEQ, and dDEG. Also SNCP protected VC-4-4cs are protected against AU-4-4c-LOP/AIS, MS-AIS, LOF, LOS, VC-4-4c- dTIM, dUNEQ and dDEG.

The SURPASS hiT 7035 SNCP implementation supports also non-revertive, single-ended and drop & continues features.

An advantage of SNCP is the flexibility to select any segment of the path for protection. The SNC protection can be applied to an end-to-end (from source to sink termination point) VC-n path, or to one or multiple links within the end-to-end path. It is also simple and easy to implement, as there is no signaling required between the source and destination nodes.

5.1.4 LCAS

SURPASS hiT 7035 supports the combination of VCAT and LCAS to provide VC-4, VC-3 or VC-12 level protection. LCAS allows hitless adjustment of the size of a virtually concatenated group of channels.

For example, whenVC-4-nv bandwidth is used to transmit data traffic through the network. In the case that certain VC-4s in the same VC-4-nv group fail, SURPASS hiT 7035 will use LCAS to delete the failed VCs from the group, and the traffic is dynamically, or on the fly adapted to the rest VC-4s bandwidth for transmission. Without LCAS, partial bandwidth failure will result in the failure of the end-to-end traffic transmission.

When the failure is repaired, the LCAS will automatically add (recover) the deleted VC-4s to the VC group.




5.1.5 Ethernet Shared Protection Ring

SURPASS hiT 7035 supports L2 switching and RSTP (IEEE 802.1w compliant) based L2 protection in ESR. The convergence time can reach less than two seconds. RSTP based protection is different from SDH layer protection. SDH protection is considered a physical layer protection, while RSTP is a Layer 2 protection. When layer 2 Ethernet data fault is detected, even though the physical connectivity is good, RSTP will make the convergence of the data to another physical path.

5.1.6 Multiple Layers Protection

SURPASS hiT 7035 supports network protection functions in multiple layers. These layers are SDH and Ethernet data. In order to coordinate the protection activities between layers, SURPASS hiT 7035 provides a protection escalation mechanism. This uses different hold off times at different layers to make sure that lower layer protection occurs first. For example, in a fiber failure condition, SDH protection will be performed first. If SDH layer protection is successful, no Ethernet layer protection occurs (because it is not needed). However, if the SDH protection fails after a certain period of time (the hold off time for Ethernet layer protection), Ethernet layer protection will occur. That is, the higher the layer, the longer the hold off time will be. In this way, the system can fully take the advantage of the fast SDH protection (




SURPASS hiT 7035 provides the following electrical interface card protection:

(1) 1:4 63 E1 card protection (revertive) (2) 1:3 3 E3/DS3 (W/P) card protection (non-revertive) (3) 1+1 2 STM-1E (W/P) card protection (non-revertive)

5.2.4 Protection under Abnormal Condition

Software download protection: when power fails during software download, SURPASS hiT 7035 BIOS will be written protected. The BIOS is guaranteed not to start the uncompleted software program or data file. After the power recovery, SURPASS hiT 7035 supports continued software downloading. All application software and data files can be downloaded to the NE while the NE is still in-service. The software download verification process prevents data errors from transmission.

Software upgrade protection: SURPASS hiT 7035 controller contains two copies of the system software. During the software upgrade, one copy will be replaced by the new version of the software. After the new version is confirmed, the switch over to the new version does not affect the service traffic, and the existing system setting and configuration are maintained. If the system upgrade fails, the system can be switched back to the old version. Only when the new software version is confirmed working properly, can the old version be erased.

5.2.5 Software Fault Tolerance

The software design of SURPASS hiT 7035 NE adopts the principle of software engineering, involving a top-down and object-oriented software design methods. Advanced software developing management and designing technology assure the high quality and reliability of NE software.

SURPASS hiT 7035 provides multiple protections for software programs and data with self-checking and self-recovering functions.

Data transmission checking and re-transmitting mechanism are implemented in all control signal transmission channels between modules to minimize the transmitting errors.

Adopted internal watchdog-circuit in CPU to avoid the impact of software deadlock or shut down. No service is affected when the software performs warm reset.

Adopted common software platform approach: SURPASS hiT 7035 supports code-sharing and re-using as many as field proven codes to provide higher software reliability.




5.2.6 Data Security

SURPASS hiT 7035 adopts database module technology and manages data uniformly, which enhances the data security:

Database and database files each have a data checking function.

Database files are protected according to importance level of data. Errors of lower level database files will not affect higher level database files

6. Technical Specification 6.1 Multiplexing Structure

SURPASS hiT 7035 supports the following multiplexing structure and terminated mapping and payload mapping structures.

Bit Rate Cross-connect multiplexing structure

STM-16AUG-16AUG-4-16c

STM-16AUG-16AUG-4AU-4-4c

STM-16AUG-16AUG-4AUG-1AU-4

STM-16AUG-16AUG-4AUG-1AU-3

STM-16AUG-16AUG-4AUG-1AU-4VC-4TUG-3TU-3

2.5 Gb/s

STM-16AUG-16AUG-4AUG-1AU-4VC-4 TUG-3TUG-2TU-12

STM-4AUG-4AU-4-4c

STM-4AUG-4AUG-1AU-4

STM-4AUG-4AUG-1AU-3

STM-4AUG-4AUG-1AU-4VC-4TUG-3TU-3

622.08 Mb/s

STM-4AUG-4AUG-1AU-4VC-4TUG-3 TUG-2TU-12

STM-1AUG-1AU-4

STM-1AUG-1AU-3

STM-1AUG-1AU