Nortel Networks Circuit Card 311 - Manual (Page 130)

130 NT1R20 Off-Premise Station Analog Line card
Control functions are provided by a microcontroller, a card LAN interface,
and signaling and control circuits on the NT1R20 OPS Analog Line Card.
Control functions are provided by a microcontroller, a Card LAN link, and
signaling and control circuits on the OPS analog line card.
Microcontroller-
The NT1R20 OPS analog line card contains a microcontroller that controls
the internal operation of the card and the serial card LAN link to the
controller card. The microcontroller controls the following:
• reporting to the CPU through the card LAN link:
— card identification (card type, vintage, and serial number)
— firmware version
— self-test status
— programmed configuration status
• receipt and implementation of card configuration:
— programming of the codecs
— enabling/disabling of individual units or entire card
— programming of input/output interface control circuits for
administration of line interface unit operationenabling/disabling of an
interrupted dial tone to indicate call waiting
— maintenance diagnostics
— transmission loss levels
Microcontroller – The microcontroller controls the following:
• reporting the following to the CPU via the card LAN link:
— card identification (card type, vintage, and serial number)
— firmware version
— self-test status
— programmed configuration status
• receipt and implementation of card configuration:
— of the Codecs
— enabling/disabling of individual units or entire card
— programming of input/output interface control circuits for
administration of line interface unit operation
— maintenance diagnostics
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.