Flexi Packet Data Link

8/10/2019 Flexi Packet Data Link

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Data Link

FT42729EN02GLA2 © 2010 Nokia Siemens Networks

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Contents

1 Data Link 3

1.1 E1/T1 Channel Map 3

1.2 E1/T1 Ports 10

1.3 STM MUX Demux (loopback) 18

1.4 STM Trace Message 19

1.5 Copy 20

1.6 Ring Routing Configuration 21

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FT42729EN02GLA2

© 2010 Nokia Siemens Networks2



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1 Data Link

1.1 E1/T1 Channel Map

Check the Radio link Summary, to know exactly the available bandwidth on air. In thefollowing example the bandwidth for E1 traffic is 8 E1.

Fig. 1 Summary Configuration Example



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From the GUI interface, select:

Link configuration>Data Link>E1/T1 Channel Map

Click on "Update" pushbutton, in order to reset the Channel Map view area.

Fig. 2 E1/T1 Channel Map 1

TIP

The tributaries ports are with the ID EXn to select the I/O expansion module or MAn

to select the tributaries on the master modulo.

En means Radio East Side

Wn means Radio West Side



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Fig. 3 E1/T1 Channel Map 2

Once updating the window, the system shows the current possibilities for the E1traffic configuration.

There are two ways to proceed:

• Custom (default): to edit directly the cross connections

• Channel Mapping Type: using different Template solutions



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1.1.1 Custom

Type directly the cross connection. In a 1+1 configuration all the cross connection on

air are indicate with the letter E..n, as East

Fig. 4 E1/T1 Channel Map Editing

TIPCheck the cross connection syntax in the system overview chapter referring the crossconnections. The separation between the time slot column and the tributary columnmust be with the "coma" (,).

After the typing, click on "Update"



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Fig. 5 E1/T1 Channel MAP example of Invalid mapping

In case the selection is not completed the system indicates the "Invalid Mappings"and the "Incomplete Mappings" advices



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The Update with a correct sequence will give the following result:

Fig. 6 E1/T1 Channel Map Valid Mapping example



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1.1.2 Mapping Type

In case of Channel Mapping Type with Templates, select one of the followingpresented in the pop up window

Fig. 7 E1/T1 Channel Map Template Example



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1.2 E1/T1 Ports

Once created the channel mappings, in order to run a 2Mbs traffic test, connect onemapped tributary port to a traffic test generator in one IDU, and prepare a loop on theremote IDU port. In case is not available a hardware loop software loops arepossible.

In the GUI interface, select:

Link configuration>Data Link>E1/T1 Ports

Fig. 8 E1/T1 Configurations

Channel section Checkbox – Select channel(s) to apply configurations. Thenumber of available channels is dependent on the equipment configuration. Anychannels that appear in grey color are inactive.

• MA indicates that the channel is a Master IO card front panel port.

• EX indicates that the channel is an Expansion IO card front panel port.



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1.2.1 E1/T1 Single Port Loopback

Purpose of this test is to verify the End to End link connectivity and the proper E1mapping to ensure the payload connectivity between both end terminal stations

Fig. 9



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Two loopbacks are available:

• Far

• Near

The Far loopback example is shown in the following

2 Mbs

generator

IDU1 IDU2

E2,MA2 E2-MA2

E1/T1 Ports

Far loopback

Fig. 10 Loopback example

Select the Physical Channel, click on Apply Setting; scroll down the left side bar;select "Far"in the loopback setting and then, click on "Update".

1

2

3

4

Fig. 11 Single loopback setting example



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The Near loopback is a port test. See the following

2 Mbsgenerator

IDU1 IDU2

E2-

,MA2 E2

-

,MA2

E1/T1 Ports

Loopback = Near

Near loopback

Fig. 12 Near loopback Example

Fig. 13 Near loopback example

TIPLoopback field = "Normal"; means no loop on that port



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1.2.2 SDH-PDH Interaction

In one station the SDH generator has to be connected. The IDUs involved contain theSTM1 mini IO micro module.

Fig. 14 Test set Example



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The following example represents how to connect traffic from SDH to PDH

SDH

Generator

CH 1.1.1-

IDU1 IDU2

-

STM1 PDHSTM1

Fig. 15 SDH test set Example

IDU 1, connected to the SDH generator, has the radio time slot E1 mapped withSTM1 1.1.1.

IDU 2 has the radio time slot E1 mapped with a PDH port."

IDU1 IDU2

Fig. 16 Channel Mapping Example



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Another possibility is to drop the 2Mbs into SDH in the same station using the IDU asmultiplexer

SDH

Generator

CH-1.1.2

IDU1 IDU2

-

STM1

PDH

Fig. 17 SDH Test bed example

The cross connection on Channel Map will be as follows:

Fig. 18



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1.2.3 Only SDH traffic

Flexi Hybrid can be configured as a pure SDH traffic radio link regenerator.

The SDH frame (STM1) is transparently passed through the Radio Link.

In this case the Radio link has no Ethernet or PDH traffic.

SDH

Generator -

IDU1 IDU2

-

STM1 STM1 SDH

Fig. 19 SDH Traffic only example

In Link configuration the IDU operational mode has to be set as follows on bothradios: 28.128-1s which means: 28 MHz bandwidth space, 128 QAM modulation, 1STM1 data traffic.

Fig. 20 Link configuration IDU Operational Mode example for STM1





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1.4 STM Trace Message

STM Trace Message screen is available only if the Enhanced Master IO Card andthe Mini IO module are installed in the equipment (STM-1 Optical or STM-1 ElectricalMini IO).

The menu window is presented in the following:

J0 byte

J1 byte

J2 byte

Fig. 23 STM Trace Message



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1.5 Copy

It is possible to copy the cross connectionsOnce editing the cross connections select all of them with the mouse and clicks theright button. Choose "Copy".

Select the other Radio.

In the same menu select again the data and with right mouse, choose "Paste".

Radio 1

Radio 2

Fig. 24 Channel Map Copy example



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1.6 Ring Routing Configuration

Fig. 25

This Menu is available in case of east-west configuration.

The user isset the restoring mode (automatic or manual) in case of the RingConfiguration. If the automatic mode has been selected it will be possible to set therestore delay.

The parameters listed in this page are:

• Ring Routing Mode – Automatic/Manual.

• Restore Delay – Enter the suitable delay (If the routing mode is Automatic).

• Force Protection Switch – By pressing Start the forcing operation of the RingProtection Switch is activated (the Standby path becomes Active). By pressing

Stop the forcing command is released.



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