[asterisk-users] TE2XXP and modems

[Matthew Fredrickson]

Olivier wrote:
> In fact, today's setup is :
> PSTN ----<PRI> ----  Alcatel OXE PBX ---- Phones, faxes or modems
> 
> I'm wondering if inserting an Asterisk server between PBX and PSTN would
> break modems and faxes.
> For phones, I'm confident it will work.
> Any call that will cross Asterisk would be treated without any echo
> cancellation or codec translation.
> 
> So the main question is "is TE2XXP-enabled Asterisk able to switch TDM
> without introducing latency that would spoil modem or fax services ?".

Yes.  That board is able to do an on card native bridge which will allow 
the TDM data to skip going to the host, giving a very low latency 
bridge.  You need to make sure in your Dial() command in the Asterisk 
server that you don't utilize flags that will keep a native bridge from 
occurring.  (hHtT and a few others)

-- 
Matthew Fredrickson
Software/Firmware Engineer
Digium, Inc.