Avaya Definity SI, Maintenance Manual, Page: 1824 / 2968

Maintenance Object Repair Procedures
555-233-123 10-1038 Issue 4 May 2002
Table 10-376. Avaya DEFINITY Server IP trunk feature/performance limitations
Feature/
Performance Description
Recommendation
Abbreviated
Dialing Abbreviated Dial strings
with embedded pauses
lose digits after the pause Most calls work. Do not create
Abbreviated dial strings with
embedded pauses.
Compression
limitations All IP trunk calls go
through A/D conversion,
which uses compression
to reduce bandwidth. Each
compression degrades the
voice signal and creates
call processing delay. No more than 3
compression/decompression cycles
for any call.
NOTE:
The compression/
decompression that most
voice mail systems use must
be counted as 1 cycle.
Call Classifier IP trunk’s compression/
decompression cycle
makes ringback, busy and
voice detection Do not administer these features:
■
Call Coverage Redirected
Off-Net (CCRON)
■
Certain wireless phone coverage
Call Coverage
Call Forwarding
Call Transfer Calls extended across
multiple Avaya DEFINITY
Server nodes require
multiple call paths.
Significant voice quality
degradation is likely. Multiple call paths not recommended
Conferencing Voice quality and delay
problems if the party
controlling the conference
is on the IP trunk (voice
paths from external callers
come in on the IP trunk,
are conferenced, then sent
out to other external
parties across an IP trunk) Avoid conference calls where at least
two other parties are on the other
side of the IP trunk.
NOTE:
The following conferences
work OK:
■
Conferences of parties on the
local Avaya DEFINITY Server
■
Conferences controlled by the
local Avaya DEFINITY
Server, involving local parties
and only 1 party on the other
side of an IP trunk
Continued on next page