We are using Sangoma Phone Desktop for our users in the local Office and our users that are at other locations.
The issue we are running into is that the user outside of the office does not show if they are available or not, I checked all user account settings, all is the same. Is this a Port issue for Sangoma Phone?
Can change this port inside the PBX Admin GUI → System Admin → Port Management
Safe to open this up to untrusted networks as the traffic is encrypted with SSL and requires username and password authentication.
Used for call signaling and API access
10000-20000
UDP
Media - RTP
The port can be changed by going to Settings → Asterisk SIP Settings → General SIP Settings Tab. Note: Zulu uses the same rtp port configuration as SIP.
Safe to open this up to untrusted networks, as your RTP traffic can come from anywhere your Sangoma Phone users are connecting from.
The configuration is the same on all users, they are in the same group. Difference is they are in a different country and not on our internet connection.
It all sounds correct. We use it remotely with just the listed ports open and presence works. It feels like it might be client based. The client comes with Sangoma support, so it might be worth engaging them via a ticket if you are stuck.