Owner's manual

Functional description 111

Figure 20

OPS analog line card - faceplate

The faceplate of the card is equipped with a red LED. When an NT1R20

OPS Analog Line Card is installed, the LED remains lit for two to five

seconds while the self-test runs. If the self-test completes successfully, the

LED flashes three times and remains lit. When the card is configured and

enabled in software, the LED goes out.

Functional description

This functional description of the NT1R20 Off-Premise Station (OPS)

analog line card is divided into two parts. First, a description of the card’s

control, signaling, and power interfaces is given, followed by a description

of how the card itself functions. See Figure 21 "OPS analog line card -

block diagram" (page 112).

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 02.06 Standard

27 August 2008