[asterisk-users] IAXModem or T38Modem?

Klaus Darilion klaus.mailinglists at pernau.at
Thu Mar 27 04:27:01 CDT 2014

In my experience iaxmodem + Hylafax is very stable and work in my setups 

But in these setups I either use ISDN uplinks or SIP trunks with low RTT 
and jitter (highspeed links to the service provider, no WAN links). 
Thus, T38 is in my setups not necessary.


On 24.03.2014 06:41, Mike Diehl wrote:
> Hi all,
> I'm installing Hylafax on my Asterisk system.  From what I've read, I
> can either use IAXModem or T38Modem to provide the virtual fax device.
> So at the risk of starting a religious war, which one should I use?
> I don't mind running IAX if I have to.  I want as much flexibility and
> stability as I can get.
> So, what are your recommendations?
> Mike.

More information about the asterisk-users mailing list