Nortel Networks 1000 - Manual (Page 480)

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
Copyright © 2003-2008 Nortel Networks
.