[Asterisk-Users] Cisco phones and Messages and Forward ToVM keys

[Brian]

; Below assumes you are using the same number for Voicemail boxes as
extensions

; if ${RDNIS} is blank then GotoIf will go to extension 2, otherwise it
will go to extension 102
exten => 8500,1,GoToIf($[X${RDNIS} = X]?2:102)
exten => 8500,2,VoiceMailMain(s${CALLERIDNUM})
exten => 8500,3,Hangup
exten => 8500,102,VoiceMail(u${RDNIS})
exten => 8500,103,Hangup

; you should now be able to press the "Messages" key and get Voicemail
man, and press the "ToVM" key when you have an incoming call and have
the call immediately forwarded to your voicemail with the unavailable
greeting.