Distinctive Call Waiting Parameters

You can use the alert-info values and class fields in the SIP header to map calls to distinct call-waiting types.

You can apply three call waiting types: beep, ring, and silent. The following list includes available parameters.

Note: This feature requires call server support.

Alert-Info fields from INVITE requests are compared as many of these parameters as are specified (x=1, 2, ..., N) and if a match is found, the behavior described in the corresponding ring class is applied.

default (default)


Specify a ringtone for single registered line using a string to match the Alert-Info header in the incoming INVITE.

NULL (default)