[Freeswitch-users] Fax T38 problems in proxy media

[Loi Dang]

Hi, i experienced this 2 years ago with the latest version that time
1.6.17, likely no will to change for the current version. For short, proxy
media does NOT seem to work at all for `t38-passthru=true`.
My solution was to switch to normal media mode for that option to take
effect.
You should give it a try.

rgds,
Loi Dang

On Fri, Nov 1, 2019 at 1:13 AM Brian West <brian at freeswitch.com> wrote:

> Don't use proxy media mode, PRETEND PROXY MEDIA DOESN'T EXIST! :)
>
> On Thu, Oct 31, 2019 at 12:35 PM David Villasmil <
> david.villasmil.work at gmail.com> wrote:
>
>> 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
>>>
>>> _________________________________________________________________________
>>>
>>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
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>>
>> --
>> Regards,
>>
>> David Villasmil
>> email: david.villasmil.work at gmail.com
>> phone: +34669448337
>> _________________________________________________________________________
>>
>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
>> services.
>> Build your next product on our scalable cloud platform.
>>
>> Join our online community to chat in real time
>> https://signalwire.community
>>
>> Professional FreeSWITCH Services
>> sales at freeswitch.com
>> https://freeswitch.com
>>
>> Official FreeSWITCH Sites
>> https://freeswitch.com/oss
>> https://freeswitch.org/confluence
>> https://cluecon.com
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> https://freeswitch.com
>
>
>
> --
>
> Brian West | Co-founder and Developer
>
> Need Commercial support? email sales at freeswitch.com
>
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>
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>
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> _________________________________________________________________________
>
> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
> services.
> Build your next product on our scalable cloud platform.
>
> Join our online community to chat in real time
> https://signalwire.community
>
> Professional FreeSWITCH Services
> sales at freeswitch.com
> https://freeswitch.com
>
> Official FreeSWITCH Sites
> https://freeswitch.com/oss
> https://freeswitch.org/confluence
> https://cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
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