User manual

Codec ID Settings

8.69. You can set the Codec ID to meet the other device’s requirement. When you finished the setting,

please click the Submit button.

DTMF Settings

8.70. You can setup the options for DTMF function in this page. The options include RFC2833 (Outband

DTMF), Inband DTMF, and Send DTMF SIP info. If you are making two-stage callings for extension

to PSTN, you might need to select RFC2833 DTMF option.