[Freeswitch-users] Fax T38 problems in proxy media

[David Villasmil]

Can you paste the complete messages?

On Thu, 31 Oct 2019 at 16:44, Jose Fco. Irles Durá <josefu at gmail.com> wrote:

> Hi, I have sended another email to the list with attachments. I think
> that the list not accepts attachments, sorry.
>
> I have several FreeSWITCH's (latest version from deb packages: 1.10.1
> -release-12-f9990221e6) and I have problems with faxes in proxy media
> (in bypass-media works).
> In the sofia.conf.xml I have setted the param t38-passthru=true
>
> If the flow is:
> 1. Initial INVITE
> 2. Re-Invite from one of the legs with t38 sdp
> Result: works
>
> But if the flow is:
> 1. Initial INVITE
> 2. Re-invite from one of the legs changing the media (at answer)
> 3. Re-invite from one of the other legs with t38 sdp
> Result: not works
>
> I tried with "soa_enable=false" without luck.
>
> FreeSWITCH seems that hangs the sip transaction.
>
> This capture is the first reinvite (in the flow, the "showing" line):
> https://pastebin.com/raw/X4zrUr4k
>
> This capture is the reinvite with the t38 negotiation sended by the
> receiver (Grandstream ATA):
> https://pastebin.com/raw/KCXD51aH
>
> And this with the response (200ok) accepting the t38 negotiation):
> https://pastebin.com/raw/ifqtPN8L
>
> How I can debug the problem?
>
> Best regards
>
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>
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-- 
Regards,

David Villasmil
email: david.villasmil.work at gmail.com
phone: +34669448337
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