Avaya Nortel Communication Server 1000 Manual page 221

Example 1
A user configures four codecs:
1. G.711 a-law codec with a 10 msec payload
2. G.729A codec with 50 msec payload
3. G.729AB codec with 30 msec payload
4. G.723.1 codec with a 30 msec payload
The following six codecs are actually registered:
1. G.711 a-law (10 msec)
2. G.711 mu-law (10 msec)
3. G.729AB (30 msec)
4. G.729A (50 msec)
5. T.38
6. G.711 Clear Channel
The G.729AB codec is selected, as it is the first in the order of preference of
the BB codecs. The G.723.1 codec does not get registered.
Example 2
A user configures three codecs:
1. G.711 mu-law codec with a 20 msec payload
2. G.729A codec with 30 msec payload
3. G.723.1 codec with a 30 msec payload
The following five codecs are actually registered:
1. G.711 mu-law (20 msec)
2. G.711 a-law (20 msec)
3. G.729A (30 msec)
4. T.38
5. G.711 Clear Channel
The G.729A codec is selected, as it precedes the G.723.1 codec in the
order of preference of the best bandwidth codecs.
Voice Gateway codec registration
The Voice Gateway registers codecs for the gateway channels as follows:
•
Copyright © 2003–2008, Nortel Networks
.
G.711 a-law and G.711 mu-law are always registered.
Nortel Communication Server 1000
IP Line Fundamentals
NN43100-500 02.02 Standard
Release 5.5 4 February 2008
Codec registration 221