Nortel Networks NN43001-563 - Manual (Page 309)

Add an IP Trunk 3.01 (and later) node 309
Figure 99
New ITG Node, DSP Profile tab, Codec sub-tab
WARNING
Do not turn off G.711, unless there is no other alternative.
Some IP devices use G.723 and G.711, some devices
use G.729 and G.711, and some devices support all three
codecs. If this node were configured with only G.723, for
example, and a device configured with G.729 and G.711
attempted to place a call to this node, the call would fail,
because no matching codec exists.
Always include G.711, even if it is listed as the last choice,
unless it is impossible to use G.711 due to bandwidth
restrictions.
VAD
Figure 99 "New ITG Node – DSP Profile tab - Codec sub-tab" (page
309)
shows a DSP Profile with VAD enabled for the G.711. This
is the default setting for TM 3.1.
16 When G.711 is selected as the codec option and the only remote
device on the network is an ITG 2.x trunk or an IP 3.0 trunk, then
the VAD setting can be left enabled. If the IP Trunk 3.01 (and later)
node will interwork with CS 1000M, disable VAD. Only devices at the
remote end of a small number of gateways can perform VAD and
understand the pertinent signaling.
Select an RTP port
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2007, Nortel Networks
.