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

[Sergey Safarov]

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:
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