Again the Telephone Interface alerts the CPU that a call is coming in on a particular line .
This time the signaling from the PBX - Voicemail Data Link ( D ) indicates that Fred is calling directly , not being forwarded .
Again the Telephone Interface alerts the CPU that a call is coming in on a particular line , but this time the signaling from the PBX - Voicemail Data Link ( D ) indicates that Fred is calling directly , not being forwarded .