[asterisk-users] Asterisk 1.4 Fax

[Steve Underwood]

Hi Rob,

Rob Hillis wrote:
> Well that answers that question.  I see that t38modem provides an H232 
> modem - is this unsuitable for HylaFAX's purpose? (ignoring the fact 
> that it requires a kernel recompile on most newer distros.)
>
> Steve Underwood wrote:
>> Rob Hillis wrote:
>>   
>>> Last time I heard IAXModem didn't support T.38 because the IAX2 
>>> protocol didn't support T.38 - whether that's still the case or not, I 
>>> don't know.
>>>     
>> There are actually two reasons. One is that T.38 over IAX is not 
>> defined. The other is the current T.38 termination support in spandsp is 
>> only for the full FAX machine it contains. T.38 termination to the class 
>> 1 FAX modem (T.31) interface for HylaFAX is a work in progress. When 
>> that is done, I hope we will have a sipmodem to replace iaxmodem, 
>> offering bother audio and T.38 to HylaFAX functionality.
>>
>> Steve
>>     

The most recent versions of t38modem can apparently provide both a SIP 
and H.323 T.38 to class 1 FAX modem interface for HylaFAX. What it 
cannot provide is an audio FAX interface. The sipmodem code I am working 
on will integrate audio and T.38 FAX processing in a single SIP entity.

Steve