Dialing Preference on Group 500

[Anonymous]

We use both Teams(with RealConnect) and Sfb in our enviornment. I read from http://blog.schertz.name/2019/10/poly-group-series-with-microsoft-teams/

that if running on mixed mode(Teams+Sfb), you need to set the dialing preference to IP H.323 as 1. When I do this and join a Sfb meeting, it just dials the conference ID of the Sfb invite then fails. Once I change it back to SIP->IP H.323, it dials the correct SIP address and joins the meeting successfully. What should be the correct setting?

[cmstrauch]

RealConnect from the Group Series point of view is always a H323 call. When you dial sip, are you actually landing on the RMX?

[Anonymous]

Yes, it still lands in the RMX if SIP is preference 1.

[cmstrauch]

What are you using as your SIP registrar?

[Anonymous]

sipdir.online.lync.com:443

[cmstrauch]

So you are running your group series as a native Skype client and not H.323? I may be mistaken but RealConnect from the Polycom GS's point of view is an H.323 call to the DMA/RMX.

[Anonymous]

Ok I think I understand now. We are essentially configured for "Interop" mode. Teams calls utilize IP H.323 to connect with ReallConnect while Sfb calls still call to SIP natively. 

[cmstrauch · Accepted solution]

That is exactly what RealConnect is. Interop with each client type landing on their native conference servers and then the conference servers talk to each other, not the endpoints.