Functional description 127
The card LAN link supports the following functions on the NT1R20 OPS
Analog Line Card:
•polling
•reporting of self-test status
•CPU initiated card reset
•reporting of card ID (card type and hardware vintage)
•reporting of firmware version
•reporting of line interface unit configuration
•enabling/disabling of the DS-30X network loop busy
•reporting of card status
Power interface
Power is providedto the NT1R20 OPS analog line card by the NTAK78
ac/dc or NTAK72DC power supply.Poweris provided to the OPS circuit card
by the NTAK78AC/DC or NTAK72 DC power supply.
Poweris provided to the NT1R20 OPS Analog Line Card by the NTAK78
ac/dc or NTAK72dc power supply.
The following card functions are described in this section:
•Line interface units
•Card control functions
•Circuit power
•Software service changes
•Port-to-port loss configuration
The following card functions are described in this section:
•Line interface units
•Card control functions
•Circuit power
•Software service changes
•Port-to-port loss configuration
Line interface units
The NT1R20 OPS analog line card contains eight independently
configurable interface units. Relays are provided in each unit to apply
ringing onto the line. Signal detection circuits monitor on-hook/off-hook
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23May 2008
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.