Nortel 1000 Description, Installation And Operation Manual page 160

Page 160 of 644
553-3001-363 Standard 2.00
ITG engineering guidelines
Table 19 summarizes traffic flow of a 4-node IP Trunk 3.01 (and later)
network.
Table 19
Example: Traffic flow in a 4-node IP Trunk 3.01 (and later) network
Destination Pair
Santa Clara/Richardson
Santa Clara/Ottawa
Santa Clara/Tokyo
Richardson/Ottawa
Richardson/Tokyo
Ottawa/Tokyo
The codec selection is on a per-IP trunk card basis. During call setup
negotiation, only the type of codec available at both destinations is selected.
When no agreeable codec is available at both ends, the default codec G.711
is used.
Note: Nortel Networks recommends that all cards in an IP Trunk 3.01
(and later) system have the same image. If multiple codec images are
used in an IP Trunk 3.01 (and later) network, the calls default to the
G.711 group when the originating and destination codecs are different.
The IP Trunk 3.01 (and later) port requirement for each node is calculated by
counting the traffic on a per-node basis, based on Table 11 on
port requirements for the example in Table 19 are given in Table 20 on
page 161.
September 2004
Traffic in CCS
60
45
15
35
20
18
page 133. The