Solved Phones not provisioning over SBC

[treefiddy]

Hi,

I have a remote location with the Windows SBC installed there. The phones show up in the admin console as "192.168.4.132:5059 via SBC 192.168.30.5:5060" (as an example) but am unable to get the phones to register after that.

I can get the phone to provision by manually entering the provisioning address into the phone UI but it still cannot register.

Trying to assign the phone to an extension from the Phone admin menu also does nothing.

My other SBC setups show the phones connecting on port 5060 on both sides, what is that 5059 port?

 

[Saqqara]

Make sure port 443 is allowed out, from the remote site, as provisioning is done via https

Make sure 'Block Remote Tunnel Connections (3CX App connections with Tunnel enabled & SBC will be blocked)' is unticked under Options for the phones.

Check your blacklist, to see if the IP's have been blacklisted.

 

[treefiddy]

Issue resolved. There was an ACL on the switch blocking traffic from the SBC vlan to the voice vlan...