Unsupported Using Openscape CP700 handsets with cloud 3cx and local SBC

[totallytechuk]

Hey Guys,
I've got a couple of Unify Openscape CP700 handsets. I've been using the web management system to set up my handsets.
The 3CX console shows the SBC is online and when I add a Generic Handset I see the settings, however I cannot get my handsets to actually connect.
There are only a few bits of info online - but can anyone suggest anything please?

I've attached the screen grabs of the different screens I've been trying to change to get them to connect.

 

[Charles_3CX]

Regarding your question, please note these are not tested or supported; please use only supported devices:https://www.3cx.com/sip-phones/

 

[fxbastler]

There are only a few bits of info online - but can anyone suggest anything please?

Register the phones using the SBC IP, not the 3CX FQDN.

I don't know how the CP700s behave. We still have a few OpenStage 40 / 60 units with 'the right' firmware in use. All of them very unsupported by 3CX and you have to manually configure everything on each phone - bad solution:

• System Identity
  your Terminal Number may be correct (3CX user extension number), may be you have to uncheck Enable ID
• SIP Interface
  Media Negotiation may be ANAT and IP Mode = IPv4, ymmv
• Registration
  use SBC IP, User ID = 3CX SIP user Auth ID, Password = 3CX SIP user password, MLPP Base = Local, MLPP Domain = dsn+uc,
  I think CSTA will not work

No need to set <IP:SIP-port> for standard SIP port.

Because it's a 3CX SMB, the necessary tool (packet capture) isn't available. You might be able to use tcpdump / tshark on the SBC as a workaround. We haven't had to try that yet.