[asterisk-users] does transcoding take place when a SIP call (both ends using same codec) gets forwarded over T1?

[Tim Nelson]

----- "Deepak" <dlalmtl at gmail.com> wrote: 
> 
I am trying to understand this from a CPU performance perspective. 

> We have SIP Phones/Asterisk using G729 codec. The calls are being forwarded over T1 to the PSTN. 

Thanks 

Your Asterisk box will transcode those calls into whatever format is native for your PRI. T1 will be ulaw and E1 will be alaw most likely. 

--Tim 
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