Call routing issues

[littlerichie292]

Hi all, I have a 3cx instance on amazon cloud, which was deployed directly from the 3cx site. The system works just fine for the most part, but i do have some call routing issues.

This morning a DID was called that is only supposed to ring on one extension. It rang on my extension as well. Both extensions use the same hardware. (supported Yealink Dect handsets) and each extension has it's own base unit. Neither base unit has the other extension programmed on it. I have had this same issue with other DID's as well, even going to Yealink T42G desk phones.

All phones are provisioned Via direct SIP Stun.

I have some other lines in a call group that after a period of time as well, will stop ringing until the base unit is rebooted.

ALl phones are behind an Ubiquiti USG Pro Firewall with SIP ALG turned off (or so it says)

Most times if i reboot the phone base units, the problem goes away for a while.

Anybody else ever have this issue?

Thanks

 

[Saqqara]

The magic word is your setup - STUN.

Has you configure each extension to have different sip / rtp ports , fixed IP (can be dhcp reservation) and port forwarding setup to forward the correct sip / rtp ports to the correct phone.

https://www.3cx.com/3cxacademy/videos/intermediate/configuring-remote-extensions/

Depending on your setup i.e. number of phones you maybe better off installing an SBC server

 

[littlerichie292]

Ah, makes sense, will just set up an SBC Server.

Thanks

 

[leejor]

If it is just the two base units behind the router, you could try changing the local SIP port, on one extension, to something different from the other extension, as a test. While some routers do have a problem getting the correct voice ports through,resulting in one way audio problems, some seem to be able to deal with it, for a couple of devices. Worth a try as a "quick fix" as you prepare an SBC.