[Freeswitch-users] SIP trunk Cisco-Freeswitch: Cannot return from HOLD

[Sergey Safarov]

yes looks as bug, please report
https://github.com/signalwire/freeswitch/issues

https://tools.ietf.org/html/rfc6337#section-5.3

5.3 <https://tools.ietf.org/html/rfc6337#section-5.3>.  Hold and Resume of Media

   [RFC3264] specifies (using non-normative language) that "hold" should
   be indicated in an established session by sending a new offer
   containing "a=sendonly" attribute for each media stream to be held.
   An answerer is then to respond with "a=recvonly" attribute to
   acknowledge that the hold request has been understood.




On Sun, Dec 22, 2019 at 11:27 AM Yehavi Bourvine <yehavi.bourvine at gmail.com>
wrote:

> Hi,
>
>   Cisco sends the SDP in the ACK. The problem is that Cisco sends
> 'sendonly" in SDP and FS replies also with "sendonly", and there is  no
> apparent reason for this. This causes then a one-way audio.
>
>             Thanks, __Yehavi:
>
> ‫בתאריך יום א׳, 22 בדצמ׳ 2019 ב-8:41 מאת ‪Sergey Safarov‬‏ <‪
> s.safarov at gmail.com‬‏>:‬
>
>> Think if devices send INVITE without SDP, then they must send SDP in ACK
>> message.
>> Please check.
>>
>> On Sun, Dec 22, 2019 at 9:02 AM Yehavi Bourvine <
>> yehavi.bourvine at gmail.com> wrote:
>>
>>> Hello,
>>>   I am connecting FS 1.8 with Cisco CUCM. A call is initiated correctly,
>>> and there is two way audio. When the Cisco phone places the call on hold,
>>> cisco sends SDP with "sendonly". Upon return from HOLD, Cisco sends INVITE
>>> without SDP  and FS replies  with SDP with "sendonly"... As a result, there
>>> is a one way audio from FS to Cisco. I can roll this problem to Cisco as it
>>> does not cancels the "sendonly" from its side, but why FS sends also
>>> "sendonly"? This probably causes Cisco to not send audio anymore.
>>>
>>> Anyone noticed this problem and has a solution?
>>>
>>>                      Thanks, __yehavi:
>>> _________________________________________________________________________
>>>
>>> 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
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>>> https://freeswitch.com
>>>
>>> Official FreeSWITCH Sites
>>> https://freeswitch.com/oss
>>> https://freeswitch.org/confluence
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>>>
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>>> https://freeswitch.com
>>
>> _________________________________________________________________________
>>
>> 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
>
> _________________________________________________________________________
>
> 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
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