Configuring DTMF

You can configure Dual-Tone Multi-Frequency (DTMF) by using the Server Administrator > Connectors node. Use this feature if users have DTMF tones or DID extensions associated with their accounts.

To configure DTMF

  1. Check the box beside Capture DTMF to capture DTMF tones.

  2. In the DTMF Format text box, enter the format of the DTMF string. Use DTMF to indicate the location of the DTMF digits.
    This setting should be modified only if the PBX modifies the DTMF string. For example, suppose the PBX appends an access code to each DTMF string. The original DTMF digits captured were 3456, and the PBX appends an access code that results in the string 30#3456#. The DTMF format must be defined as #DTMF# to identify the original DTMF digits 3456.

  3. Enter a mask for DID lookup if necessary. Use XXXX to indicate the location of the DTMF digits in the resulting string.
    This setting should be modified if DID lookup requires additional digits that are not part of the captured DTMF string.

    Suppose DID lookups require a 10 digit number, but there are only 4 digits in the captured DTMF string. The 4 digits represent the DID extension of the recipient. In this case, you can create a mask with the area code and DID trunk so that they are inserted before the DID extension and the resulting string is 10 digits. For example, the captured DTMF digits are 8888 but the format required to complete a DID lookup is 978-334-8888, create the mask 978334XXXX. The resulting string is 9783348888 and a 10 digit DID lookup based on this format is successful.

  4. In the Length spin box, enter the maximum number of DTMF digits the server accepts from the caller.

  5. In the Timeout spin box, enter the time period (in seconds) the server waits for the next DTMF tone.
    When the server does not receive a DTMF tone and times out waiting for one, it assumes that the last tone received was the final tone in the sequence.

  6. In the Terminator text box, enter the character that always marks the last DTMF string digit. Valid terminator characters are: the numerals 0-9, the pound sign (#), the asterisk (*), and the letters A, B, C, and D.

Note: This setting is optional. If no such terminal character varies, do not enter a terminator.

  1. Select Voice Assistance if a voice-assisted greeting is being used.

  2. For the  Greeting Filename text box, browse to the location of a custom greeting file. You can also leave the field blank to use the greeting file supplied by the fax board manufacturer.

See also

Configuring Channel Properties