How to Register Remote Extension to FCM5600 with FRC using FIBERME IP-Phone FAP27XX
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.

6- Navigate to Value Added Features -> RFC
7- Take Capy 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
-Server Address: yourcompanyname.fiberme.cloud
-Server Port: 5162
-Transport Protocol: TLS

Still stuck?
FIBERME support can look at your setup with you. Certified Partners can also ask in the FIBERME Community, and anyone can learn the systems step by step in the free courses of FIBERME Academy.