Owner's manual

456 NT8D09 Analog Message Waiting Line card

Figure 119 "Analog message waiting line card - block diagram" (page

457) shows a block diagram of the major functions contained on the

analog message waiting line card. Each of these functions are described

in the following sections.

Figure 120 "Analog message waiting line card - block diagram" (page

458) shows a block diagram of the major functions contained on the

analog message waiting line card. Each of these functions are described

in the following sections.

The analog message waiting line card contains a microprocessor that

provides the following functions:

•

self-identification

• self-test

• control of card operation

•

status report to the controller

•

maintenance diagnostics

The analog message waiting line card also provides:

•

600-ohm balanced terminating impedance

•

analog-to-digital and digital-to-analog conversion of transmission and

reception signals for 16 audio phone lines

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 02.06 Standard

27 August 2008