How to Register Remote Extension to FCM5600 with FRC using Zoiper Mobile Softphone
To establish connectivity between the IPPBX and Mobile, it is necessary to enable registration for the mobile device on the IPPBX. This will enable the mobile 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.
4- Number Of Simultaneous Registrations : 5
5- Register Expiration : 180

6- Navigate to Value Added Features -> FRC
7- Copy the domain server.

2- On Mobile
1- Connect the Mobile to the internet by Wi-Fi , 4G or, 5G.
2- Download Zoiper
3- Open Zoiper
4- Navigate to Accounts

5- Click add

6- Select manual configuration

7- Select Sip account

8- Account name: Use your Extension
9- Domain: Domain yourcompanyname.fiberme.cloud :5162
10- User name: Use your Extension
11- Password: sip Password

12- Navigate to Network
13- Edit transports from UDP to TLS
14- Disable STUN

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.