[asterisk-users] Connecting an existing conference via PJSIP?

Jonathan H lardconcepts at gmail.com
Wed Oct 17 11:56:42 CDT 2018

Let's say I have a conference room of 8 users. At some point in the
evening, we need to hook up with a Zoom conference.

That means hooking up that existing pool of users to a new PJSIP
channel. An admin would dial in, enter a pin, and initiate that

Sounds really simple, but I've read:


Perhaps I'm not seeing the wood for the trees, but I'm not figuring it out.

I think I need to set a variable when the admin dials the pin, and
then within that variable, write the name of the new PJSIP channel
which the admin caused to happen.

And then join the existing channel into the conference. That's the bit
I can't figure out.


Oh, and finally, when dialling the Zoom channel, I think I need to use
to "PJSIP_DTMF_MODE(inband)"
because in PJSIP wizard, I've set "endpoint/dtmf_mode=rfc4733"
otherwise it doesn't work with everything else.
And of course, Zoom needs audible touchtone digits.

(Before anyone says "Why not use Zoom Sip Connector" - well, £39 per
month for the SIP connector, or 3*10 minutes at 1p/minute (ie:30p) per
month via PSTN is why!

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