On 2 Mar 2007, at 08:04, Steve Totaro wrote:

Asterisk wrote:
Thanks Steve!

What are usually the best approaches in troubleshooting the audio
quality issues and QoS related stuff when putting two Asterisk boxes
together via IAX?

Have you ever tried connecting Asterisk boxes in the same VPN (but still
in different countries)?

Regards,
Alex


Alex,

VPN will only help in keeping your data more secure. It will actually hurt your latency and throughput since there is processor overhead involved in encrypting/decrypting and and bandwidth in encapsulating the data.

I've heard rumors that some networks (e.g. 3g mobile carriers) put a QoS on VPN packets to improve the response time for their business customers. So in some exceptional cases the IAX over VPN could
show lower latency than straight IAX, but it is pretty unlikely.


Tim Panton

www.mexuar.net
www.westhawk.co.uk/



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