SIP support of Message Waiting Indicator (MWI)

Blueworx Voice Response for AIX provides support for sending a blind Notify message for controlling a Message Waiting Indicator. Blind Notify means that a SIP Notify message can be sent without the need for a Subscribe method.

To use this method of controlling a Message Waiting Indicator:
  1. From the Welcome window, select Configuration —> System Configuration —> Change.
  2. Click Exchange Data Link.

    A window showing the parameters in the Exchange Data Link group.
  3. Set the MWI Automatically Set to Yes.
  4. Close the Exchange Data Link window to save your changes.
Note: Only numeric mail box IDs are supported and therefore Blueworx Voice Response must be configured to use a proxy so that the Notify message can be correctly routed over a network.
The following example shows the contents of the Notify message: 
16:20:11 NOTIFY sip:123456@192.168.0.10:5060 SIP/2.0
To: <sip:123456@acme.com>
From: <sip:WVRuser@192.168.0.110:5060>; tag=2b85571c1-192.168.0.110
Content-Type: application/simple-message-summary
Content-Length: 23
Call-ID: 26734cea04faf_192.168.0.110
Max-Forwards: 70
CSeq: 7627 NOTIFY
Via: SIP/2.0/UDP 192.168.0.110:5060; branch=z9hG4bK245f673724fce-192.168.0.110
Contact: <sip:WVRuser@192.168.0.110:5060;transport=UDP>
Route: <sip:123456@acme.com>
Messages-Waiting: yes
Parent topic: Application Programming Considerations