Hi,
When codec negotiation is taking place,
- Since the endpoint terminals - usually IP phones - are not aware of the
network configuration, How can the endpoint terminal (usually IP Phone)
decide one of its codec capabilities ?
For example, there're 3 users on the network.
user A (IP phone, G.711, G.729 are possible, network 1.0.0.0)
user B (IP phone, G.711, G.729 are possible, network 1.0.0.0)
user C (IP phone, G.711, G.729 are possible, network 3.0.0.0)
Proxy Server (network 1.0.0.0)
A ----- B (same network, LAN)
\
P
|
|
C (different network, WAN)
In case when the call between A and C is taking place and when the
bandwidth is concerned,
How would they know that G.729 should be used instead of G.711 because
they're not in the LAN environment ?
Thanks
/Jun
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