Nortel Networks NN43001-106 - Manual (Page 494)

494 B34 Codec Static Loss Plan Downloading
if changing to the new ETSI loss plan, all hardcoded B34 IPE cards must
be retrofitted with the new flexible B34 IPE cards.
• Systems changing to a new ETSI loss plan must use the new flexible
B34 IPE cards as well as Phase 8B static parameter download software;
a hardware retrofit and a software upgrade are also necessary.
• Newly installed systems will use the new flexible B34 IPE cards.
New flexible B34 equipped XFALC (flexible analog line cards) support Static
Loss Plan Downloading using B34 messages. New flexible B34 equipped
XFALCs installed in a Phase 7C software environment do not receive
download messages, but use the firmware-defined default.
A distinction must be made between long and short lines on ALC units, and
to download loss plan values based on this setting.
Feature interactions
Alternative Loss Plan
The alternative loss plan tables must be enlarged as the default table is
enlarged.
B34 Dynamic Loss Switching
B34 Codec Static Loss Download is a prerequisite for B34 Dynamic Loss
Switching. Both features share the same definition of port types and use
the same base-level table.
When B34 Dynamic Loss Switching is enabled, the Static Download
messages to the analog trunk cards are suppressed. Static download to
analog line cards continues.
B34 codec static loss download. Since the B34 Dynamic Loss Switching is
dependent on B34 Codec Static Loss Download, B34 Codec Static Loss
Download must be enabled when B34 Dynamic Loss Switching is enabled.
The port types defined for B34 Dynamic Loss Switching are a subset of the
port types defined for B34 Codec Static Loss Download.
Also, the base level table used by B34 Codec Static Loss Download is
also used by B34 Dynamic Loss Switching. Since B34 Codec Static Loss
Download is a prerequisite for B34 Dynamic Loss Switching, B34 Codec
Static Loss Download is enabled when B34 Dynamic Loss Switching is
enabled. When B34 Dynamic Loss Switching is enabled, the following
operations concerning trunk cards are suppressed:
• During initialization, B34 Codec Static Loss Downloading to trunk cards
is suppressed, so that loss levels do not change in case there are active
calls. Downloading continues to analog line cards.
Nortel Communication Server 1000
Features and Services - Book 1 of 6 (A to B)
NN43001-106 01.04 Standard
Release 5.0 27 July 2007
Copyright © 2007, Nortel Networks
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