Fax Extensions

Fax Extensions are special extensions used for fax machines. SIP uses a T38 protocol to communicates between SIP fax machines. These extensions negotiate with the opposite party to apply that T38 protocol.

The window has a list panel and a configuration panel.


Field description

Fax Extension Extension number for fax machine
Fax authentication ID Authentication ID for SIP registration
Password Authentication password for SIP registration.
CID CID number to display to the caller
Add DID Select from DID list an available trunk line

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