Nortel Networks NN43001-106 - Manual (Page 502)

502 B34 Dynamic Loss Switching
Feature interactions
Alternative Loss Plan
The alternative loss plan tables must be enlarged as the default table is
enlarged.
B34 Codec Static Loss Download
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.
• In LDs 32 and 36, B34 Codec Static Loss Download is suppressed on
enabling the trunk card or unit, so that loss levels do not change in case
there are active calls. Downloading continues to analog line cards.
• When reseating the cards, B34 Codec Static Loss Download is
suppressed. Downloading continues to analog line cards.
• In LD 14, B34 Codec Static Loss Download is suppressed.
• In LD 10, B34 Codec Static Loss Download is suppressed.
When B34 Dynamic Loss Switching is disabled, all B34 Codec Static Loss
Downloads to trunks are suppressed. This introduces the danger of having
some cards in the system which are not set with the proper loss levels,
since the system has been changed from a dynamic mode to a static
mode without activating the download of the static messages. To highlight
this change, a SCH5842 error message is generated, indicating to the
craftsperson that B34 Dynamic Loss Switching is disabled, and that B34
Static Loss Downloading is now in effect and that a download should be
activated by system initialization or SYSLOAD.
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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