SIP Trunk to 3rd Party MCU

[PCap]

Hi

I am trying to create a SIP trunk to a Pexip MCU. The call does not seem to get to them. I have created a SIP Trunk and trying to forward an extension to them.

 

[YiannisH_3CX]

Hello @PCap

Are you registering the PBX to the MCU? Are you registering the MCU to the PBX? are you using an IP based trunk?
what exactly are you trying to do? Some details regarding what you are trying to achieve would enable us to better advise.

 

[PCap]

Hi. We are trying to dial an extension, 75000 and have that go to a 3rd party audio bridge that is on the same network.

 

[leejor]

Reading this...

"The Pexip Distributed Gateway service interworks calls between protocols, allowing users to make calls from virtually any type of endpoint (including SIP, H.323, Skype for Business / Lync) and Infinity Connect clients (WebRTC and RTMP) and interworking these to SIP, H.323 or Skype for Business / Lync."

Because it supports SIP, I'm going to assume that it can register , as a trunk, to a SIP server, or vice versa. That being a case, you may want to explore the use of a 3CX Bridge trunk. It can be set as a master in 3CX to allow the far end to register to 3CX, as it would any other SIP provider.

Read through...

https://www.3cx.com/docs/

 

[dtisdall]

PEXIP is a distributed conferencing interworking platform/gateway. It doesn't support outbound SIP register as you'd end up having each PEXIP node registering, which in a lot of deployments could be 10s or 100s. In PEXIP registration is typically reserved for endpoints.

What PCAP is trying to do is route all calls to an extension, in this case 75000, out to a PEXIP node either via it's IP or by DNS. This is not *quite* the correct configuration but is close.

PCAP, you need to set up a SIP Trunk to your PEXIP node and then use an Outbound Rule to send calls destined for 75000 to that trunk. You don't need to use SIP registration, just point the trunk out to the node's IP. Ensure you have "PBX provides Audio" always turned off for endpoints and the trunk.

You might also consider sending a range of numbers out to PEXIP. If your VMRs are say 75000 to 75100 then route 75xxx out the trunk and skip users needing to enter their room ID.

Let me know if you need to see an example configuration. We do a lot of PEXIP and 3CX work and know that we've set this up before in our lab.