Advanced Settings of SIP Extension
This topic describes the advanced settings of a SIP extension.
Note: The SIP configurations require professional knowledge of SIP protocol. Incorrect
configurations may cause calling issues on the SIP extension.
Setting | Description |
---|---|
DTMF Mode | Set the mode for sending DTMF tones.
|
Transport | Set the transport protocol.
Note: If you change the transport protocol, you must re-register the
extension.
|
Qualify | Enable this option to send SIP OPTION packet to SIP device to check if the device is up. |
T.38 Support | Enable or disable T.38 fax for the extension. Note: Enabling T.38
will add performance cost. We recommend that you disable
T.38. |
SRTP | Enable SRTP for voice encryption. |