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BCSU (BSC3i)

DN01154837Issue 5-0 en

# Nokia Siemens Networks 1 (51)

BSC3153Nokia GSM/EDGE BSS, Rel. BSS13, BSC andTCSM, Rel. S13, Product Documentation, v.1

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The information in this document is subject to change without notice and describes only theproduct defined in the introduction of this documentation. This documentation is intended for theuse of Nokia Siemens Networks customers only for the purposes of the agreement under whichthe document is submitted, and no part of it may be used, reproduced, modified or transmitted inany form or means without the prior written permission of Nokia Siemens Networks. Thedocumentation has been prepared to be used by professional and properly trained personnel,and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomescustomer comments as part of the process of continuous development and improvement of thedocumentation.

The information or statements given in this documentation concerning the suitability, capacity, or performance of the mentioned hardware or software products are given “ as is ” and all liabilityarising in connection with such hardware or software products shall be defined conclusively andfinally in a separate agreement between Nokia Siemens Networks and the customer. However,Nokia Siemens Networks has made all reasonable efforts to ensure that the instructionscontained in the document are adequate and free of material errors and omissions. NokiaSiemens Networks will, if deemed necessary by Nokia Siemens Networks, explain issues whichmay not be covered by the document.

Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NOEVENT WILL NOKIA SIEMENS NETWORKS BE LIABLE FOR ERRORS IN THISDOCUMENTATION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL,DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUTNOT LIMITED TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESSOPPORTUNITY OR DATA, THAT MAY ARISE FROM THE USE OF THIS DOCUMENT OR THEINFORMATION IN IT.

This documentation and the product it describes are considered protected by copyrights andother 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 2008. All rights reserved.

2 (51) # Nokia Siemens Networks DN01154837Issue 5-0 en

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Contents

Contents 3

List of tables 4

List of figures 5

Summary of changes 7

1 Base Station Controller Signalling Unit (BCSU) overview 91.1 Main functions of BCSU 91.2 Operating environment of BCSU 10

2 Logical structure of BCSU 13

3 Mechanical structure of BCSU 193.1 S13 first delivery 193.2 S12 deliveries 203.3 Releases prior to S12 24

4 Plug-in units of BCSU 31

5 Operating environment of the CPU plug-in unit 33

6 Operation of BCSU 37

7 CC3C cartridge power supply 39

8 CC3C cartridge intermediate cabling 418.1 CC3C-B 418.2 CC3C-A 45

9 Estimated maximum power consumption of BCSU 49



Contents

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List of tables

Table 1. Plug-in units of the BCSU in S13 BSC3i 1000/2000 19

Table 2. Plug-in units of the BCSU in S12 BSC3i 1000/2000 21

Table 3. Plug-in units of the BCSU in S12 BSC3i 660 to BSC3i 1000 upgrade 23

Table 4. Plug-in units of the BCSU in S11.5 25


Table 6. Plug-in units of the BCSU in S11 27


Table 8. Cabling connectors of the CC3C-B 42

Table 9. Power supply of the CC3C-B 44

Table 10. PCM cabling through cross-connection of the CC3C-B 44

Table 11. Additional wiring connectors of the CC3C-B 45

Table 12. Cabling connectors of the CC3C-A 46

Table 13. Additional wiring connectors of the CC3C-A 47

Table 14. The estimated maximum power consumption of BSC3i 1000/2000 BCSUplug-in units in S13 deliveries 49

Table 15. The estimated maximum power consumption of BSC3i 1000/2000 BCSUplug-in units in S12 deliveries 49

Table 16. Power consumption of BSC3i BCSU plug-in units in S11.5 and S11 firstdeliveries 50

Table 17. Power consumption of BSC3i BCSU plug-in units in S10.5 and when theoptional LAPD capacity upgrade has not been done 51


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List of figures

Figure 1. Operating environment of the BCSU, S13 and S12 10

Figure 2. Operating environment of the BCSU, S11.5 11

Figure 3. Operating environment of the BCSU, S11 and S10.5 11

Figure 4. Block diagram of the BCSU, S12 first deliveries 14

Figure 5. Block diagram of the BCSU, releases prior to S12 16

Figure 6. BCSU equipment in the CC3C-B cartridge 21

Figure 7. BCSU in CC3C-A cartridge in S11.5 25

Figure 8. BCSU in CC3C-A cartridge in S10.5 28

Figure 9. Operating environment of the CPU plug-in units in the microcomputerswhen EMB is used 34

Figure 10. Operating environment of the CPU plug-in units in the microcomputerswhen MB is used 35

Figure 11. Connectors of the CC3C-B cartridge from S12 releases onwards 42

Figure 12. Connectors of the CC3C-A cartridge in releases prior to S12 46



List of figures

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Summary of changes

Changes between document issues are cumulative. Therefore, the latestdocument issue contains all changes made to previous issues.

Changes made between issues 4-2 and 5-0

Only the CP816-AC CPU plug-in unit is available in S13 first deliveries.


Information on the CP816-AC and the CP816-A has been revised.


New CPU plug-in unit variants have been added: the CP816-AC and theCP710-AC. Information on connectors of the CC3C-B cartridge correctedand updated to S12 level. Minor editorial changes have been made.


Document has been updated to S12 level. Information on the new BitGroup Switch (GSW2KB), the new CPU plug-in unit CP816-A, and thenew Ethernet-based Message Bus (EMB) has been added. Sectionsdepicting mechanical structure, logical structure, plug-in units, operation of the BCSU, CC3C cartridge intermediate cabling, and estimated maximumpower consumption have been updated. New variant of the CC3Ccartridge, the CC3C-B, is introduced.


Document updated to S11.5 level. The new Bit Group Switch (GSW1KB)added, the 2 nd generation Packet Control Unit (PCU2-D) added.



Summary of changes

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Sections Plug-In Units of BCSU and Operation of BCSU only contain links

to related documents.


Document updated because of the AS7-C PCM configuration change(combi - AS7-C) and because of the fact that 1×AS7-C replaces 3×AS7-Bsin the BCSU in the 110 TRX extension deliveries.


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1 Base Station Controller Signalling Unit(BCSU) overview

1.1 Main functions of BCSU

The BSC Signalling Unit (BCSU) performs those BSC functions that arehighly dependent on the volume of traffic. The S13 and S12 first deliveryBCSU handles traffic in a maximum of 200 transceivers (TRXs); prior toS12 deliveries, the BCSU handled traffic in a maximum of 110 transceivers(TRXs).

The BCSU is housed in a cartridge of its own. It consists of two parts,

which correspond to the A and Abis interfaces. The optional PacketControl Units (PCUs) are included in the BCSU.

The A interface part of the BCSU is responsible for the following tasks:

. performing the distributed functions of the Message Transfer Part(MTP) and the Signalling Connection Control Part (SCCP) of SS7

. controlling the mobile and base station signalling (Base StationSubsystem Application Part, BSSAP)

. performing all message handling and processing functions of the

signalling channels connected to it

The Abis interface part of the BCSU controls the air interface channelsassociated with transceivers (TRXs) and Abis signalling channels. Everyspeech circuit on the Abis interface is mapped one-to-one to a GSM-specific speech/data channel on the air interface. The handover and power control algorithms reside in this functional unit.



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1.2 Operating environment of BCSU

The BCSU is part of the decentralised call control section in the DX 200system. The BCSU is connected to the microcomputer network of theexchange through the message bus interface of its microcomputer and tothe CCS and LAPD channels by semipermanent connections through theBit Group Switch (GSW2KB/GSW1KB/GSWB). The control connectionbetween the trunk circuit interfaces (ET) and the BCSU is alsoimplemented by semipermanent connections. The BCSU is connected tothe Clock Equipment (CLS) of the exchange by the 8 MHz and 8 kHztiming signals. The BCSU is connected to the Operation and MaintenanceUnit (OMU) and the Marker and Cellular Management Unit (MCMU) by the

timing and GSW2KB/GSW1KB/GSWB switchover control signal CGS.The BCSU is also connected to the OMU by the message bus clock alarmMBAL and the card control loop CCL.

Operating environment, S13 and S12 releases

In S13 release, there are no changes in the operating environment of theBCSU.

In S12 release, a new Bit Group Switch, GSW2KB, and the new Ethernet-based Message Bus, EMB, are implemented. The operating environmenton S12 level is depicted in the following figure.

Figure 1. Operating environment of the BCSU, S13 and S12

TIMING

TRUNK CIRCUITS

DN0599861

MCMU

OMU

SWU

GSW2KB

CLS

ET

ET

EMB

CCLMBAL

BCSUCGS

SIGNALLING

TRUNK CIRCUIT

SUPERVISIONGb over IP


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Operating environment, S11.5 release

On the S11.5 release, the BCSU can be equipped with the SecondGeneration Packet Control Unit PCU2-D. This unit implements, for example a Gb over IP connection to the SWU. The operating environmenton S11.5 level is depicted in the following figure.

Figure 2. Operating environment of the BCSU, S11.5

Operating environment, S11 and S10.5 releases

The operating environment on S11 and S10.5 level is depicted in thefollowing figure.

Figure 3. Operating environment of the BCSU, S11 and S10.5

TIMING

TRUNK CIRCUITS

DN04151564

MCMU

OMU

SWU

GSWB/GSW1KB

CLS

ET

ET

MESSAGE BUS

CCLMBAL

BCSUCGS

SIGNALLING

TRUNK CIRCUITSUPERVISIONGb over IP

TIMING

TRUNK CIRCUITS

DN9986407

MCMU

OMU

LAN SWITCHOR

ROUTER

GSW

CLS

ET

ET

MESSAGE BUS

CCLMBAL

LAN

BCSUCGS

SIGNALLING

TRUNK CIRCUITSUPERVISION



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For more information, see

. Logical structure of BCSU

. Mechanical structure of BCSU

. Plug-in units of BCSU

. Operating environment of the CPU

. Operation of BCSU

. CC3C cartridge power supply

. CC3C cartridge intermediate cabling

. Power consumption of BCSU


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2 Logical structure of BCSUS13 deliveries

On S13 level, there are no changes in the logical structure of the BCSU.

S12 deliveries

On S12 level, the BCSU consists of the following functional blocks:

. a microcomputer

. two preprocessing units for multichannel signalling. an LAPD (Link Access Protocol on the D-channel) interface. an LAPD interface for controlling the ET. an SS7 interface

. the Ethernet-based Message Bus (EMB) interface

. the Packet Control Unit(s)



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Figure 4. Block diagram of the BCSU, S12 first deliveries

The BCSU is equipped with two preprocessing units (AS7-C) for multichannel signalling for both SS7 and LAPD signalling. The interface

units are also connected to the switching network through PCMconnections.

The SS7 interface is for the A interface. It contains a preprocessor, whichis capable of handling a maximum of sixteen 64 kbit/s signalling channels,or eight 128 kbit/s signalling channels, or four 256 kbit/s signallingchannels, or two 512 kbit/s signalling channels. One 2 Mbit/s SS7signalling channel is also available. The signaling terminal issemipermanently connected to the time slots used for signalling.

DN05111919

Micro-computer

PCUInterface

BCSU

COMPACT PCI BUS

EMB 0

1

Group switch

ET

Message BusInterface

LAN

LAN

LAN

...PCU

Interface

SS7/LAPDInterface


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The BCSU uses LAPD interfaces to supervise the 2 Mbit/s circuits (time

slot 0 handling) connected to the Bit Group Switch, and for signallingtowards BTSs and ETs for both Abis and Ater interface directions. The bitrate of a single link can be 16 kbit/s, 32 kbit/s, or 64 kbit/s. Layer 2 LAPDfunctions are performed by the signalling unit, but application-specificmessages are handled by the microcomputer of the BCSU.

With two preprocessing units in the configuration, the LAPD and the SS7capacity is increased on S12 level.

Redundant Ethernet interfaces in the microcomputer connect the BCSUsto the duplicated LAN switch units.

According to the N+1 redundancy principle, there is one extra BCSUcompared to the number set by the dimensioning rules. The additional unitis used only if one of the active units fails.

Deliveries prior to S12

The BCSU consists of the following functional blocks:

. a microcomputer

. a preprocessing unit for multichannel signalling.

an LAPD (Link Access Protocol on the D-channel) interface. an LAPD interface for controlling the ET. an SS7 interface

. the Message Bus interface

. the Packet Control Unit(s)




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Figure 5. Block diagram of the BCSU, releases prior to S12

The interface units, that is, the SS7 and the LAPD protocols, areconnected to the switching network via PCM connections. Similarly,redundant Ethernet interfaces in the microcomputer connect the BCSUs to

the duplicated LAN switch units.

The BCSU is equipped with a preprocessing unit for multichannelsignalling for both LAPD and SS7 signalling. The SS7 interface is for the Ainterface. It contains a preprocessor, which is capable of handling amaximum of eight 64 kbit/s signalling channels, four 128 kbit/s signallingchannels, or two 256 kbit/s signalling channels. The signalling terminal issemipermanently connected to the time slots used for signalling.

The BCSU uses the LAPD interface to supervise the 2 Mbit/s circuits (timeslot 0 handling) connected to the Bit Group Switch.

DN0280332

SS7/LAPDInterface

Micro-computer

PCUInterface

PCUInterface

BCSU

COMPACT PCI BUS

MB 0

1

Group switch

ET

Message BusInterface

LAN

LAN

LAN


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A preprocessing unit in the BCSU includes LAPD interfaces for signalling

towards BTSs and ETs for both Abis and Ater interface directions. The bitrate of a single link can be 16 kbit/s, 32 kbit/s, or 64 kbit/s. Layer 2 LAPDfunctions are performed by the signalling unit, but application-specificmessages are handled by the microcomputer of the BCSU.

According to the N+1 redundancy principle, there is one extra BCSUcompared to the number set by the dimensioning rules. The additional unitis used only if one of the active units fails.




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3 Mechanical structure of BCSU3.1 S13 first delivery

In S13 first delivery BSC3i 1000/2000 BCSU, only the CP816-AC centralprocessor is available. There are no other changes in the mechanicalstructure of BCSU.

Table 1. Plug-in units of the BCSU in S13 BSC3i 1000/2000

Position Name Function Note

F01 PSC6-A Power SupplyF02 SHIM4T Shim Plate

F03 SHIM4T/

PCU2-D

Shim Plate /

PCU2 plug-in unit

1)

F04 SHIM4T/

PCU2-D

SHIM4T/

PCU2 plug-in unit

1)

F05 SHIM4T/

PCU2-D

Shim Plate /

PCU2 plug-in unit

1)

F06 SHIM4T/

PCU-B/

PCU2-D/

Shim Plate /

PCU1 plug-in unit /

PCU2 plug-in unit

1)

F07 SHIM4T/

PCU-B/

PCU2-D/

Shim Plate /

PCU1 plug-in unit /

PCU2 plug-in unit

1)

F08 AS7-C CCS7 and LAPD

F09 AS7-C LAPD

F10 CP816-AC Central processor



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Table 1. Plug-in units of the BCSU in S13 BSC3i 1000/2000 (cont.)


F10 MRD512A Memory for thecentral processor

Notes

1) If PCU-B or PCU2-D is not equipped in this slot, SHIM4T isequipped.

3.2 S12 deliveries

S12 first delivery

In S12 release BSC3i 660, the minimum number of BCSUs in the BSC3i istwo, and the maximum number is seven. In BSC3i 1000 and BSC3i 2000,the minimum number of BCSUs in the BSC3i is two, and the maximumnumber is eleven (six BCSUs in the BSCC cabinet and five in the BSCDcabinet).

On S12 level, a new CC3C cartridge variant, the CC3C-B, is implementedin BSC3i 1000 and BSC3i 2000 first deliveries, and the plug-in units arereorganised in the cartridge. There are no MBIF plug-in units in slots 08and 09 because of the implementation of the Ethernet-based MessageBus (that is, by the use of two LAN connections in the CPU plug-in units).In addition,

. the maximum number of PCU2 plug-in units is increased to five(slots 03 to 07)

. the maximum number of AS7-C plug-in units is increased to two(slots 08, 09)

. a new CPU, the CP816-AC or the CP816-A and its memory module(MRD512A) is taken in use (slot 10).

The BCSU equipment is housed in the CC3C-B cartridge and theconfiguration in S12 first deliveries and upgrade deliveries includes theplug-in units shown in BCSU equipment in the CC3C-B cartridge.


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Figure 6. BCSU equipment in the CC3C-B cartridge

Table 2. Plug-in units of the BCSU in S12 BSC3i 1000/2000


F01 PSC6-A Power Supply

F02 SHIM4T Shim Plate

F03 SHIM4T/

PCU2-D

Shim Plate /

PCU2 plug-in unit

1)

F04 SHIM4T/

PCU2-D

SHIM4T/

PCU2 plug-in unit

1)

F05 SHIM4T/

PCU2-D

Shim Plate /

PCU2 plug-in unit

1)

F06 SHIM4T/

PCU-B/

PCU2-D/

Shim Plate /

PCU1 plug-in unit /

PCU2 plug-in unit

1)

F07 SHIM4T/

PCU-B/

PCU2-D/

Shim Plate /

PCU1 plug-in unit /

PCU2 plug-in unit

1)

1 106 9873 4 52

OPR

OFF

ON P S C 6 0

DBG

RST

J7

J6

C P U 0

AP AP

DN0626458

P C U 8 & P C U 7

P C U 1 0 & P C U 9

P C U 1 2 & P C U 1 1

P C U 4 & P C U 3

P C U 6 & P C U 5

AS7-C 13, 14




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Table 2. Plug-in units of the BCSU in S12 BSC3i 1000/2000 (cont.)



F09 AS7-C LAPD

F10 CP816-AC/

CP816-A

Central processor


Notes


S12 BSC3i 660 to BSC3i 1000 upgrade

S12 High Capacity upgrade is optional for an existing BSC3i (BSC3i 660).In the upgrade, the following products are removed from the CC3C-Acartridge:

. MBIF plug-in units (slots 08 and 09)

. CP710-AB, CP710-AC or CP710-A plug-in units and MR256Mmemory modules (slot 10)

The following items are reused:

. AS7-C plug-in unit is moved (from slot 05 to slot 08)

The following items are added:

. a maximum of three PCU2 plug-in units (to slots 03 to 05; as a result,the maximum total number of PCU2 plug-in units is five)

. AS7-C plug-in unit (slot 09)

. CP816-AC or CP816-A plug-in unit and MRD512A memory module(slot 10)


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Table 3. Plug-in units of the BCSU in S12 BSC3i 660 to BSC3i 1000 upgrade


F01 PSC6-A /

PSC6-B

Power Supply 1)


F03 SHIM4T/

PCU2-D

Shim Plate /

PCU2 plug-in unit

2)

F04 SHIM4T/

PCU2-D

SHIM4T/

PCU2 plug-in unit

2)

F05 SHIM4T/

PCU2-D

Shim Plate /

PCU2 plug-in unit

2)

F06 SHIM4T/

PCU-B/

PCU2-D

Shim Plate /

PCU1 plug-in unit/

PCU2 plug-in unit

2)

F07 SHIM4T/

PCU-B/

PCU2-D

Shim Plate /

PCU1 plug-in unit/

PCU2 plug-in unit

2)


F09 AS7-C LAPD

F10 CP816-A/CP816- AC

Central processor


Notes

1) Both PSC6-B and PSC6-A can be equipped in BSC3i 1000upgraded from BSC3i 660, and in BSC3i 2000 extended from

BSC3i 1000.2) If PCU-B or PCU2-D is not equipped in this slot, SHIM4T isequipped.




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S12 upgade for BSC3i with AS7-C plug-in units - no High Capacityupgrade done

On S12 level, memory upgrade is mandatory. In other words, there mustbe two MR256M modules in slot F10 instead of one when the CP710-AB,CP710-AC or CP710-A is used. When the memory capacity of the BSC3i(660) is upgraded to S12 level, but no BSC3i 660 to BSC3i 1000 upgradeis done, the number of AS7-C plug-in units remains unchanged (1) in theBCSU, see Section 3.3.1 S11.5 first delivery, S11.5 upgrade delivery with AS7-C.

S12 release with AS7-B plug-in units

On S12 level, memory upgrade is mandatory. In other words, there mustbe two MR256M modules in slot F10 instead of one.

When the BSC3i (660) is delivered with AS7-B plug-in units, theconfiguration of the BCSU is the same as presented in Section 3.3.1 S11.5 upgrade delivery with AS7-B.

3.3 Releases prior to S12

The minimum number of BCSUs in the BSC3i (in one BSCC cabinet) istwo; the maximum number is seven. The BCSU equipment is housed inthe CC3C-A cartridge and the basic configuration includes the plug-in unitsshown in BCSU equipment in the CC3C-A cartridge.

Note

Because of general N+1 redundancy principle of the fault tolerant DX200 Computing Platform, equal amount of AS7 plug-in units must beconfigured in every BCSU unit. This means that all BCSUs need toinclude either 3 x AS7-B units (standard S10.5 configuration) or 1 x AS7-C unit (standard S11 configuration). Therefore S10.5 based HWconfigurations need to be extended with S10.5 HW based BCSUextensions. Correspondingly S11 based BCSU extensions are neededfor S11 HW based BSC3i.


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S11.5 first delivery, S11.5 upgrade delivery with AS7-C

Figure 7. BCSU in CC3C-A cartridge in S11.5

Table 4. Plug-in units of the BCSU in S11.5


F1 PSC6-A/

PSC6-B

Power Supply


F3 SHIM4T Shim PlateF4 SHIM4T Shim Plate

F5 AS7-C CCS and LAPD

F6 SHIM4T/

PCU2-D/

PCU-B

Shim Plate /

PCU2 plug-in unit /

PCU1 plug-in unit

1)

F7 SHIM4T/

PCU2-D/

PCU-B

Shim Plate /

PCU2 plug-in unit /

PCU1 plug-in unit

1)

DN03513563

OPR

P S C 6 0

ON

OFF

M B I F 0

M B I F 1

C P U 0

AP

A S 7 2

P C U 4

P C U 6

P C U 3

P C U 5

R UN 0 R UN 0

RUN 1RUN 1

OPR OPR

DBG

RST

J6

J7

WO

RUN

LF

OL

TE

APDRAM

SB

CPSI

SCSI

ETx1

ETx0

ERx0

ERx1

1 2 3 4 5 6 7 8 9 10




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Table 4. Plug-in units of the BCSU in S11.5 (cont.)


F8 MBIF-B Message Bus Interface 2)


F10 CP710-AB/ CP710-AC// CP710-A

Central processor

F10 MR256M Memory for the centralprocessor

F10 MR256M Memory for the central

processor

3)

Notes


2) The interchangeability code of the MBIF-B must be theminimum of E with the AS7C in the same unit.

3) Mandatory S12 memory upgrade.

S11.5 upgrade delivery with AS7-B

Note

This configuration is used when the optional LAPD capacity upgradehas not been done.


Position Name Function NoteF1 PSC6-A Power Supply


F3 AS7-B CCS7 and LAPD

F4 AS7-B LAPD

F5 AS7-B LAPD

F6 SHIM4T /

PCU2-D /

PCU-B

Shim Plate /

PCU2 plug-in unit /

PCU1 plug-in unit

1)


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Table 5. Plug-in units of the BCSU in S11.5 (cont.)


F7 SHIM4T /

PCU2-D /

PCU-B

Shim Plate /

PCU2 plug-in unit /

PCU1 plug-in unit

1)

F8 MBIF-B Message Bus Interface


F10 CP710-AB/

CP710-AC/

CP710-A

Central processor



2)

Notes


2) Mandatory memory upgrade on S12 level

S11 first delivery and S11 upgrade delivery with AS7-C

The plug-in units on the S11 level are presented in the table below.

Table 6. Plug-in units of the BCSU in S11


F1 PSC6-A/

PSC6-B

Power Supply




F5 AS7-C CCS7 and LAPD 1)

F6 SHIM4T/ PCU-B

Shim Plate/

Packet Control Unit

2)

F7 SHIM4T/ PCU-B

Shim Plate/

Packet Control Unit

2)




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Table 6. Plug-in units of the BCSU in S11 (cont.)




F10 CP710-AB

/CP710-A

Central processor


Notes

1) In S11, one AS7-C (in slot F05) replaces all earlier three AS7-Bs (F03, F04 and F05). Its function is CCS7/LAPD.

2) If PCU-B is not equipped in this slot, SHIM4T is equipped.

3) The interchangeability code of the MBIF-B must be aminimum of E with the AS7C in the same unit.

BCSU in S10.5

The BCSU is installed in the CC3C-A cartridge.

Figure 8. BCSU in CC3C-A cartridge in S10.5

DN01195402

1 2 4 5 6 73 8 9 10

AP

DBG

RST

J7

J6

WO

RUNLF

OL

TE

APDRAM

SB

CPSI

SCSIETx0

ERx0

OPROPR

APAP

OPR

ON

OFF

P S C 6

M B I F 0

M B I F 1

C P U

A S 7 2

A S 7 1

A S 7 0

* P C U

4

* P C U

6

ETx1

ERx1

RUN0

RUN1

RUN0

RUN1

* P C U

3

* P C U

5


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The following table lists the plug-in units used in the BCSU.


Position Name Function Notes

F01 PSC6-A Power Supply


F03 AS7-B Shim Plate /

CCS7/LAPD

1

F04 AS7-B Shim Plate /

LAPD

1

F05 AS7-B LAPD

F06 SHIM4T/ PCU-B

Shim Plate /

Packet Control Unit

2)

F07 SHIM4T/ PCU-B

Shim Plate/

Packet Control Unit

2)



F10 CP710-AB/ CP710-A

Central processor


Notes

1) If AS7 is not equipped in this slot, SHIM4T is equipped.

2) If PCU-B is not equipped in this slot, SHIM4T is equipped.




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4 Plug-in units of BCSUFor more information on the individual plug-in units of BCSU, see thefollowing Plug-in Unit Descriptions:

Central Processing Unit, CPU

CP816-AC/A (in use only in BSC3i 1000 and BSC3i 2000)

CP710-AC/AB/A (in use only in BSC3i 660)

Message Bus Interface, MBIF-B

MBIF-B (in use only in BSC3i 660)

AS7 interface

AS7-C

AS7-B (in use only in BSC3i 660)

Packet Control Unit, PCU

PCU2-D

PCU-B

Power Supply Unit, PSC6

PSC6-A

PSC6-B



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5 Operating environment of the CPU plug-in unit

The control of the network elements in the DX 200 system is based on themicrocomputer units that are basic units with task-specific additions. Thecommon basic unit in all the microcomputer units is the CPU plug-in unit.Depending on the purpose of the microcomputer unit, variouspreprocessor and interface plug-in units are also needed to connect theCPU plug-in unit to the other units of the network element, as well as to theEthernet-based message Buses (EMBs) or Message Buses (MB) and tothe external equipment. However, it is the application-specific softwareinstalled in the CPU plug-in unit that controls the functioning of themicrocomputer unit.

The basic structure of the microcomputer units describing the operatingenvironment of the CPU plug-in units is shown in figures 9 Operating environment of the CPU plug-in units in the microcomputers when EMB isused and 10 Operating environment of the CPU plug-in units in themicrocomputers when MB is used.



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Figure 9. Operating environment of the CPU plug-in units in themicrocomputers when EMB is used

LAN interfaces do not physically differ from one another. However, EMBLAN interfaces are always connected through a switch (an EMB systemswitch), whereas other LAN interfaces can be connected either through aswitch (similar to but not the same as the EMB system switch) or directly toa connector panel. What makes a difference between the LAN interfaces iswhat they are used for, that is, the type of data being transmitted throughthem.

cPCI BUS

CHANGEOVERCONTROL

CS

SOC

SERVICETERMINAL

INTERFACE

APPLICATION-SPECIFIC

INTERFACES

CPU

DN0661402

LAN

INTERRUPTS

LANs

LANs

EMB to the switch


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Figure 10. Operating environment of the CPU plug-in units in themicrocomputers when MB is used

cPCI BUS

_MBINT0

_MBINT1

MBLOAD

MSGCOUNT

_8KOUT

CHANGEOVERCONTROL

CS

SOCSERVICETERMINAL

INTERFACE

M E S S A G E B U S

MESSAGEBUS

INTER-FACE

APPLICATION-SPECIFIC

INTERFACES

CPU

DN98617468

LAN

INTERRUPTS



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6 Operation of BCSUFor more information on the operation of the individual plug-in units of theBCSU, see the following Plug-in Unit Descriptions and Sections:

Jumper settings of the plug-in units

CP816-AC (in use only in BSC3i 1000 and BSC3i 2000)

CP816-A (in use only in BSC3i 1000 and BSC3i 2000)

CP710-AC (in use only in BSC3i 660)

CP710-AB (in use only in BSC3i 660)

CP710-A (in use only in BSC3i 660)

MBIF-B (in use only in BSC3i 660)

AS7-C

AS7-B (in use only in BSC3i 660)

PCU2-D

PCU-B

Front panel switches and LED indicators for CPU

Operation of CP816-AC/-A (in use only in BSC3i 1000 and BSC3i 2000)

Operation of CP710-AC/-AB/-A in use only in BSC3i 660)

Front panel LED indicators for MBIF

Operation of MBIF-B (in use only in BSC3i 660)



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Front panel LED indicators for AS7

Operation of AS7-C

Operation of AS7-B (in use only in BSC3i 660)

Front panel LED indicators for PCU

Operation of PCU2-D

Operation of PCU-B

Front panel LED indicators for PSC6

Operation of PSC6-A

Operation of PSC6-B

See also:

CC3C cartridge intermediate cabling

CC3C cartridge power supply


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7 CC3C cartridge power supplyPower supply PSC6-A and PSC6-B

The operating voltage of the functional units are fed by the PSC6-A plug-inunit (in S13 and S12 first deliveries, and in deliveries prior to S11.5) or PSC6-B (in S11.5 releases) plug-in unit, which transforms the -48 V / -60 Vvoltage from the PDFU-B (in S13 and S12 first deliveries as well as inS11.5 first deliveries) or PDFU-A (in releases prior to S11.5) at the top partof the cabinet to ±5 V and +3.3 V and distributes it to the other plug-in units.

Three forward DC-DC converters generate the voltages of +5 V, +3.3 V,and -5 V. The output and input are galvanically separated from each other.

Power supply units can be connected parallel. They have a power share

circuit to share power equally for units connected parallel.

The converters have common input voltage filtering, a start-up circuit,over- and undervoltage protection of the input, and an alarm circuit in theoutput.



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8 CC3C cartridge intermediate cabling8.1 CC3C-B

From S12 releases onwards, a new variant of the CC3C cartridge, theCC3C-B, is implemented.

The intermediate cables are connected to the connectors at the rear of therear panel of the CC3C-B cartridge. They include the following:

. the intermediate cables of the duplicated message bus (EMB)

. the cables for the internal PCM circuits to the group switch

. the cable for the basic timing signals and hardware alarm signals

. the cables for the internal LAN

The intermediate cabling connectors and the installation of theintermediate cables are described in the network element-specific Site Documents. The intermediate cabling is described in more detail in thesections below.

The connectors in the CC3C-B cartridge for intermediate cables areillustrated and listed in the following figure and tables.




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Figure 11. Connectors of the CC3C-B cartridge from S12 releases onwards

Table 8. Cabling connectors of the CC3C-B

Position Cablesize

Purpose (from → to)

B11.1A 4 ROW Clock alarm and changeover interface

B11.1J 2 ROW Changeover cable from CC3C-B to CLOC switchchangeover control

B11.1L

B11.1N

2 ROW Changeover cabling between duplicated controlcomputers

B11.1P

B11.1R

2 ROW SCSI 0 power alarm (AL2)

SCSI 1 power alarm (AL3)

B11_SC0

B12_SC1

68-SCSI SCSI cabling and termination

DN0639948

CC3C-B

..............................................................................................................................................................................................................................................................................................................................................................

: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :

: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :

1A1C1E1G1J1L1N1P1R1T1V1X2A2C2E2G2J2L2N

2P2R2T2V2X

11 10 9 8 7 6 5 4 13 2

11 10 9 8 7 6 5 4 13 2

1

2

SC1

SC0

PP2 PP1


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Table 8. Cabling connectors of the CC3C-B (cont.)

Position Cablesize

Purpose (from → to)

B02.3G

B02.3J

B02.3L

B02.3N

B02.3P

B02.3R

B02.3TB02.3V

B02.3X

B02.3Z

B02.4B

B02.4D

B02.4F

B02.4H

2 ROW

or

4 ROW

or

6 ROW

or

8 ROW

PCM cabling between GSW 1 and slot 3






PCM cabling between GSW 1 and slot 6PCM cabling between GSW 1 and slot 7







B03-10.1A-2X Cabling depending on plug-in unit

Table 9. Power supply of the CC3C-B

Position Purpose

PP1 Operating voltage supply for the cartridge

Pin 1 = UB; pin 2 = B0V

PP2 +5V supply for peripheral devices

Pin 3 = + 5V

Table 10. PCM cabling through cross-connection of the CC3C-B

Position Cable size Purpose

B01.2A 2 ROW Cross-connected PCM cabling from GSW 0

B01.2C 2 ROW Cross-connected PCM cabling from GSW 0

B01.2E 2 ROW Cross-connected PCM cabling from GSW 0


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Table 10. PCM cabling through cross-connection of the CC3C-B (cont.)

Position Cable size Purpose

B01.2G 2 ROW PCM cabling from another computer cartridge GSW 0

B01.2N 2 ROW Cross-connected PCM cabling from GSW 1

B01.2P 2 ROW Cross-connected PCM cabling from GSW 1

B01.2R 2 ROW Cross-connected PCM cabling from GSW 1

B01.2T 2 ROW PCM cabling from another computer cartridge GSW 1

Table 11. Additional wiring connectors of the CC3C-B

Position Name Purpose

B11.1E CSADDRxx Changeover signal selection

B10.1G

B10.1J

ADMODxx EMB address selection

B01.1A PCMC2A/4A PCM cross-connection

8.2 CC3C-A

Prior to S12 releases, the CC3C-A cartridge is used.

The intermediate cables are connected to the connectors at the rear of therear panel of the CC3C-A cartridge. They include the following:

.

the intermediate cables of the duplicated message bus. the cables for the internal PCM circuits to the group switch

. the cable for the basic timing signals and hardware alarm signals

. the cables for the internal LAN

The intermediate cabling connectors and the installation of theintermediate cables are described in the network element -specific Site Documents. The intermediate cabling is described in more detail in thesections below.




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The connectors in the CC3C-A cartridge for intermediate cables are

illustrated and listed in the following figure and tables.

Figure 12. Connectors of the CC3C-A cartridge in releases prior to S12

Table 12. Cabling connectors of the CC3C-A

Position Cable size Purpose (from → to) Note

B08.1N/T

B08.2A/G

2x6ROW

2x6ROW

Cabling position of messagebus MB 0

Cabling position of MB 0 andtermination with TRM9B

B09.1N/TB09.2A/G

2x6ROW2x6ROW

Cabling position of messagebus MB 1

Cabling position of MB 1 andtermination with TRM9B

B11.1A 2ROW Clock and alarm interface

B01.2A 2ROW PCM cabling to group switchGSWB 0

2)

B01.2G 2ROW PCM cabling from another computer cartridge CC3C-A

2)

B01.2N 2ROW PCM cabling to group switchGSWB 1

2)

11 9 8 7 6 5 4 3 2 110

11 9 8 7 6 5 4 3 2 110

2

1

DN98617323

SC1

SC0

PP2

CC3C-A

PP1

..............................................................................................................................................................................................................................................................................................................................................................

: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :

: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :

1A1C1E1G1J1L1N1P1R1T1V1X

2A2C2E

2G2J2L2N2P2R2T2V2X


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Table 12. Cabling connectors of the CC3C-A (cont.)

Position Cable size Purpose (from → to) Note

B01.2T 2ROW PCM cabling from another computer cartridge CC3C-A

2)

B11.1P

B11.1R

2ROW SCSI 0 power alarm

SCSI 1 power alarm

1)

B11_SC0

B12_SC1

68-SCSI SCSI cabling and termination 1)

B10.1C

B10.1E

LAN Local Area Network

B02-07.1A-2X Plug-in unit dependent cabling

Notes

1) Not in use in BCSUs

2) If the new bit-based switching network GSW1KB is used, this cabling is notimplemented

Table 13. Additional wiring connectors of the CC3C-A

Position Name Purpose Note

B01.1A PCMC5A PCM cross-connection 1)

B08.1A MBADR Message bus address MBIF 0

B09.1A MBADR Message bus address MBIF 1

Notes

1) If the new bit-based switching network GSW1KB is used, PCMC5A is not used




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9 Estimated maximum power consumptionof BCSU

The estimated maximum power consumption of the BCSU plug-in unitsS13 and S12 deliveries is indicated in the following table.

Table 14. The estimated maximum power consumption of BSC3i 1000/2000BCSU plug-in units in S13 deliveries

Plug-in unit Amount (pcs) Power consumption per plug-in unit (W)

CP816-AC 1 48

PSC6-A 1 *) AS7-C 2 18

PCU2-D 5 24

Total per cartridge 237

*) Power supply efficiency is counted in the total power consumption per cartridge

Table 15. The estimated maximum power consumption of BSC3i 1000/2000BCSU plug-in units in S12 deliveries


CP816-AC/

CP816-A

1 48

PSC6-A 1 *)

AS7-C 2 18



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Table 15. The estimated maximum power consumption of BSC3i 1000/2000BCSU plug-in units in S12 deliveries (cont.)


PCU2-D 5 24



The power consumption of the BCSU plug-in units in deliveries prior toS12 is indicated in the following tables. Even though there are differentplug-in units on different configurations, the power consumption onlydiffers on the AS7 units. In other words, PSC6s and PCUs areinterchangeable as far as power consumption is concerned.

Table 16. Power consumption of BSC3i BCSU plug-in units in S11.5 and S11first deliveries


CP710-A/

CP710-AB/

CP710-AC

1 28

PSC6-A/

PSC6-B

1 *)

MBIF-B 2 6.7

AS7-C 1 18

PCU-B/

PCU2-D

2 25




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Table 17. Power consumption of BSC3i BCSU plug-in units in S10.5 and whenthe optional LAPD capacity upgrade has not been done


CP710-A 1 28

PSC6-A/

PSC6-B

1 *)

MBIF-B 2 6.7

AS7-B 3 7.5

PCU-B/ PCU2-D

2 25



Estimated maximum power consumption of BCSU