My problem is that I cannot get call waiting to work when somebody calls from the PSTN. My hardware: X100P TDM400P Working Scenario: Phone A, Phone B, and Phone C are all connected to my Asterisk box Phone A calls Phone B Phone B picks up and they have a conversation Phone C calls Phone B Phone B hears a beep and is connected with Phone C Non-Working Scenario: Phone A and Phone B are connected to Asterisk, Phone C is an outside caller Phone A calls Phone B Phone B picks up and they have a conversation Phone C Calls Phone B (Phone B does not hear the call waiting beep) I do have call waiting defined in my zapata.conf: callwaiting=yes is listed immediately under [channels] so it should apply to all channels that I define Any ideas why this happens?