I just registered an Avaya 9620 set to my Astlinux system (0.47 - Asterisk 1.2.22), using Avaya SIP Firmware version <a href="http://2.0.1.34">2.0.1.34</a>.<br><br>Set mailbox=ext@default in the sip.conf<br><br>Found MWI worked immediately. Turned off as expected.<br>
<br>Have Fun!<br><br>Tom<br>