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

[Yehavi Bourvine]

It seems that  the problem is already known and FS developers gave a
workaround: https://freeswitch.org/jira/browse/FS-9765
Actually, Cisco is working incorrectly, but FreeSwitch is more flexible...

                      Thanks, __Yehavi:

‫בתאריך יום א׳, 22 בדצמ׳ 2019 ב-10:46 מאת ‪Sergey Safarov‬‏ <‪
s.safarov at gmail.com‬‏>:‬

> 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
>>>> 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
>>
>> _________________________________________________________________________
>>
>> 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20191225/0c2f3ad1/attachment-0001.html>