HOW to Register Remote Extension with FCM6500 using FRC, by Grandstream IP-Phone GRP26XX

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 Opus

6- Navigate to Value Added Features -> Remote Access -> Status

7- Take the Domain server.


2- IP-Phone FAP27XX 

1- Navigate Accounts then  add all the required credentials for the account.

– Account Name:  Extension Number

-SIP Server : Domain Server:5162

-Transport Protocol: TLS

– SIP User ID:  Extension Number

– SIP Authentication ID:  Extension Number

– SIP Authentication Password:  Extension SIP Password

– Name:  Extension Name

Then Navigate to SIP Settings

– SIP Transport: TLS/TCP

Then Navigate to Codec Settings

– Make only codec is OPUS

Navigate to Security Settings -> Client Certificate

– Make Minimum and Maximum TLS Version is 1.0

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