tuning VOIP for wan - 12/01/08 11:16 AM
Hi, we are experiencing audio issues with 11 softphones recently installed at an international location and connecting via Internet.
Reported problems include noisy and lossy audio.
Initial testing of a single softphone worked well.
Client site and PBX site have ample Internet bandwidth. However Internet route traverses three other networks. Over the whole route there is inconsistant latency - several hops of 200+ ms where most hops are under 100ms.
I am trying to tune the connections using the IP settings for those softphones.
Does anyone have suggestions for the settings:
Avg frames/ IP packet
Avg in time frame % threshold
Avg in time frame timer
Minimum playback time
Speech encoding
I have a general understanding of what these do and a good background in networking but no direct experience with changing these settings.
Thanks for any help or advice received!
Reported problems include noisy and lossy audio.
Initial testing of a single softphone worked well.
Client site and PBX site have ample Internet bandwidth. However Internet route traverses three other networks. Over the whole route there is inconsistant latency - several hops of 200+ ms where most hops are under 100ms.
I am trying to tune the connections using the IP settings for those softphones.
Does anyone have suggestions for the settings:
Avg frames/ IP packet
Avg in time frame % threshold
Avg in time frame timer
Minimum playback time
Speech encoding
I have a general understanding of what these do and a good background in networking but no direct experience with changing these settings.
Thanks for any help or advice received!