[OpenSIPS-Users] MediaProxy 2.3.10: T38 Fax using zoiper 2.14 for MAC

Saúl Ibarra Corretgé saul at ag-projects.com
Thu Jan 28 11:16:46 CET 2010


On 28/1/10 10:29 AM, Mike O'Connor wrote:
> Hi All
> I've been trying to get T38 faxing going and for testing I've been using
> the t38 client in zoiper and asterisk 1.6.
> The process is that the call goes to opensips which has a usr_pref which
> indicates this is a fax number, the call is then forwarded to Asterisk.
> Asterisk answers the call after letting it ring for a while, once
> answered it call fax_receive.
> Zioper then does a re-invite with the t38 headers at that time the
> mediaproxy report the error below.
> Does this look like an issue with my opensips configuration, a bug in
> mediaproxy or an issue with Zoiper ?

Could you provide a full SIP trace? Please do the trace on the server, 
using ngrep: ngrep -d any -W byline -T -P '' port 5060

We need to check how the SDP got updated to locate the bug.


Saúl Ibarra Corretgé
AG Projects

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