[Freeswitch-users] Issue with sending fax with t.38

James Lyons jlyons at quikvoip.net
Tue Jun 26 18:37:41 MSD 2012


The end device is a samsung fax machine off of the PSTN. It's an AT&T 
line, off of what appears to be a sonus switch. The originating device 
is a FS server which is using txfax.

On 06/26/2012 10:31 AM, Steve Underwood wrote:
> On 06/26/2012 08:25 AM, James Lyons wrote:
>> ring invalid RTP packet size of 8 bytes.
> is the T.38 box at the far end an old Cisco which has not been updated
> for a long time? It looks like you are getting T.38 packets on the RTP
> port, and Cisco used to do this by mistake. In fact, until they ripped
> out and replaced their T.38 engine, Cisco's was one of the buggiest.
>
> Steve
>
>
>
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