[asterisk-users] T.38 Fax With Flowroute SIP Provider

[Ryan Wagoner]

On Thu, May 6, 2010 at 7:11 PM, Warren Selby <wcselby at selbytech.com> wrote:
> On Thu, May 6, 2010 at 5:54 PM, Kevin P. Fleming <kpfleming at digium.com>
> wrote:
>>
>> On 05/06/2010 05:46 PM, Ryan Wagoner wrote:
>> > Does anybody have T.38 faxing working with Flowroute? I am running
>> > Asterisk 1.6.2.7-rc3 with spandsp 0.0.6-pre17. I can successfully
>> > receive faxes over ulaw. I enabled T.38 with t38pt_udptl=yes in
>> > sip.conf. When I receive a fax it tries to negotiate T.38 and
>> > Flowroute sends back a Bad Request response saying I have a SIP syntax
>> > error.
>> >
>> > Flowroute support is recommending that I try again after removing
>> > externip and localnet from sip.conf. They state that their service
>> > will recognize the private IP and rewrite the SIP packets. However
>> > this is going to cause issues for my remote SIP phones.
>> >
>
> Last I checked with Flowroute, they weren't yet supporting T.38.  Has this
> changed in the last month or so?
>
> --
> Thanks,
> --Warren Selby
> http://www.selbytech.com
>

I found some websites mentioning they supported it. Plus when I
receive a fax with t38 turned off I get the following in the log

WARNING[27824] chan_sip.c: Unsupported SDP media type in offer: image
19738 udptl t38

Ryan