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 Table228 "Transmission Profile Changes" (page 564).
This transmission profile change is used forcontrol 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) forLD
97 service change instructions.
Table228
TransmissionProfile 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, Nor tel Networks
.