Functional description 743
The card LAN provides a serial communication link for transferring
maintenance data and control signals between the trunk card and the SSC
card. The card LAN controls the microcontroller. The following functions
are supported:
•providing card ID/RLS
•reporting self-test status
•enabling/disabling of the DS-30X link
The Card Lan interface supports maintenance functions. The following list
of features are provided by the Card Lan:
•Polling form the PeripheralController
•Enable disable of the DS30X link
•Card status reporting
•Self-test status reporting
•Card ID
•Report configuration data
•Report of the firmware version
The Card Lan communicates through a serial communication link between
the trunk card and the PeripheralController. The microprocessor provides
the Card Lan function for the E and M Trunk.
Signaling interface
All signaling messages for the trunk are three bytes long. The messages
are transmitted in channel zero of the DS30X in A10 format.
Configuration information for the E and M trunk is downloaded from the
CPU at power up and by command from maintenance programs. Seven
configuration messages are sent. One message is sent to each unit (4)
to configure trunk type, signaling type, balance impedance etc. Three
messages are sent per card to configure the make/break ratio, A/µ-Law
operation.
All signaling messages for the trunk are three bytes long. The messages
are transmitted in channel zero of the DS30X in A10 format.
Configuration information for the E & M trunk is downloaded from the
CPU at power up and by command from maintenance programs. Seven
configuration messages are sent. One message is sent to each unit (4)
to configure trunk type, signaling type, balance impedance etc. Three
messages are sent per card to configure the make/break ratio,A/mu-Law
operation.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23May 2008
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