Owner's manual

480 NT8D09 Analog Message Waiting Line card

Jumper and switch settings

The NT8D09 Analog Message Waiting Line Card has no user-configurable

jumpers or switches. The card derives its address from its position in

the backplane and reports that information back to the Meridian 1 CPU

through the LAN Link interface.

Software service changes

Individual line interface units on the NT8D09 Analog Message Waiting

Line Card are configured using the Analog (500/2500-type) Telephone

Administration program LD 10.

The message waiting feature is enabled by entering data into the

customer data block using LD 15. See Software Input/Output Reference

— Administration (NN43001-611) for LD 10 and LD 15 service change

instructions.

Analog message waiting line cards with a vintage later than NT8D09AK

provide a fixed +2 dB transmission profile change in the gain of the D/A

convertor. See Table 202 "Transmission Profile Changes" (page 480).

This transmission profile change is used for control of end-to-end

connection loss. Control of such loss is a major element in controlling

transmission parameters such as received volume, echo, noise, and

crosstalk. The loss plan for the analog message waiting line card

determines port-to-port loss between an analog line card unit (port) and

other Meridian 1 IPE ports. LD 97 is used to configure the Meridian

system for port-to-port loss. See Software Input/Output Reference —

Administration (NN43001-611) for LD 97 service change instructions.

Table 202

Transmission Profile Changes

Vintage

A/D convertor gain D/A convertor gain

Previous to AK –3.5 dB –2.5 dB

AK and later –3.5 dB –0.5 dB

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 02.06 Standard

27 August 2008