[asterisk-users] iax vs. sip?

[Tom]

We used iax for more than a year and moved to sip about 6 months 
ago.  The quality from termination providers seems much better now with sip.

Tom

At 09:38 PM 8/30/2006, you wrote:
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>I have no NAT issues.  My PBX is multihomed and the outside IP is 
>locked down for all except IAX and SIP ports.
>
>With the current version of asterisk, which transport is better right now?
>
>I am looking at 6-10 simultaneous calls over a half T1.
>
>I am not asking about codecs here, I am asking about SIP vs. IAX if 
>the provider does either. (we are looking at testing Teliax next)
>
>I have seen posts about jitter in IAX, so I am not sure if SIP might 
>be better to use right now.
>
>Also, since IAX uses the same port for all of the calls, the call 
>separation has to be done higher in the OSI stack. I do not know if 
>this is better or worse or neither.
>
>
>
>
>Thank You,
>
>Steven BerkHolz
>- MCSA - MCSE -
>Manager of Information Systems
>TESCO Group Companies
>Fax. 248-836-5101
>www.TESCOGroup.com