Nortel Networks Circuit Card 311 - Manual (Page 564)

564 NT8D09 Analog Message Waiting Line card
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 228 "Transmission Profile Changes" (page 564) .
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 228
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 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.