To establish connectivity between the IPPBX and the IP phone, it is necessary to enable registration for the IP phone on the IPPBX. This will allow the IP phone to connect with other extensions registered on the IPPBX.
TOPOLOGY
1- IPPBX FCM5600
1- Navigate to PBX Settings-> Extensions/Trunks -> IP Extensions
2- Choose extension and navigate to edit and navigate to Features.
3- Enable Remote Extension.
3- Navigate to Advanced
4- Make Transport Protocol TLS
5- Navigate to Codes Make Selected Codes is G.722
6- Navigate to Value Added Features -> Remote Access -> Status
7- Take the Domain server.
2- IP-Phone FAP27XX
1- Navigate LINE then add all the required credentials for the account.
– Username: Extension Number
– Display name: Extension Name
– Authentication User: Extension Number
– Authentication Password: Extension Password
– Realm: Domain Server
-Server Address: Domain Server
-Server Port: 5162
-Transport Protocol: TLS
– Navigate to TLS Version make it: TLS1.0
– Navigate to Codecs Settings make it: G.722
However, if the other phones are Grandstream, we need to change some settings, especially the codecs.
1- IPPBX FCM5600
change codecs to be OPUS in Extension
2- IP-Phone FAP27XX
change codecs to be OPUS
