Page 98 of 378 ITG Engineering Guidelines
553-3001-202 Standard 1.00 April 2000
Table14 s ummarizes traffic flow of a 4-node ITG network.
The codec selection is based on a per ITG card basis. During call set up
negotiation, only the type of codec available at both destinations will be
selected. When no agreeable codec is available at both e nds, th e default c odec
G.711 will be used.
Note: It is recommended that all cards in an ITG system have the same
image. If multiple cod ec images are used in an ITG net w o r k , th e ca ll s
will default to the G.711 group when the originating and destination
codecs are different.
The ITG port requirement for each node is calculated by counting the traffic
on a per node basis (based on Table 12 on page94). The port requirements
for the example in Table14 are given in Table15 on page 99.
Table 14
Example: Traffic flow in a 4-node ITG network
Destination Pair Traffic in
CCS
Santa Clara/Richardson 60
Santa Clara/Ottawa 45
Santa Clara/Tokyo 15
Richardson /Ottawa 35
Richardson/Tokyo 20
Ottawa/Tokyo 18