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The 'Extension Length' used to determine how many of the DID digits (starting from the end) are to be used as the Voicemail box no.
No Intro message
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If you want to change this message the use this option to suppress the standard intro message and add a Playback step before this step to play your own custom message.
The most common usage is when you don't want the user to hangup after leaving the message.
Hangup on Success
Stop proceeding with route after call is answered by this voicemail step. This is useful if a voicemail box doesn't exist and you wish to handle the call in other steps, otherwise terminate call after leaving a voicemail.
Example
A staff member has a Direct In Dial (DID) number of 03 8320 8111 and their voicemail box is 111. i.e. the last three digits of their DID.
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