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378
ITG Engineering Guidelines
553-3001-202 Standard 1.00 April 2000
Table 14 summarizes 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 ends, the default codec
G.711 will be used.
Note: It is recommended that all cards in an ITG system have the same
image. If multiple codec images are used in an ITG network, the calls
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 page 94). The port requirements
for the example in Table 14 are given in Table 15 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