Added Message Waiting Indication Support in SIP.

The Message Waiting Indication options are None, Light or Stutter Dial Tone.

To receive the messages from the VMS(Voice Mail Server / System), the subscription should be enabled and the voicemail server address should be configured.

The voicemail server IP Address, Port and Re-subscription time are configured in the SIP CallSignalling Page. When this is configured, the Subscribe with Voice Mail Server option is activated in the inbound phonebook. Only when this option is enabled will the subscribe message be sent to the VMS.

This feature was added in firmware version 14.11.0H:

This firmware along with instructions can be downloaded from our Web site at: