SDP of course.

Von: FreeSWITCH-users [mailto:freeswitch-users-bounces@lists.freeswitch.org] Im Auftrag von Martin Gordian
Gesendet: Donnerstag, 9. August 2018 14:01
An: FreeSWITCH Users Help
Betreff: Re: [Freeswitch-users] Change media attribute of existing call

Hello List,

basically I want to know if there is any possibility to set the media attribute inactive/sendrecv in SPD. If there is any command I can use, or something else.

Thank you.

Von: FreeSWITCH-users [mailto:freeswitch-users-bounces@lists.freeswitch.org] Im Auftrag von Martin Gordian
Gesendet: Dienstag, 7. August 2018 15:52
An: freeswitch-users@lists.freeswitch.org
Betreff: [Freeswitch-users] Change media attribute of existing call

Hello List,

we have the following scenario with innovaphone PBX (could be any other PBX):

- In the PBX there are users configured

- Native innovaphones register with the PBX via SIP as some of these users (one user per phone)

- FreeSWITCH is used as a call controller for other of these users, and registers for them with the PBX (via user gateways), when the user registers with FreeSWITCH from its SoftPhone

I want to use the native hold/unhold of that PBX. Therefor I used WireShark to to find that the native phones send an INVITE to the PBX, for the party to go on hold, with media attribute inactive.

Now, if I have a call between a FreeSWITCH user and a native phone, how can I make FreeSWITCH to make the PBX put the phone on hold? Somehow send that INVITE by command or any other methods.  

Thank you.