8.2. Dialplan Integration

There are two primary dialplan applications that are provided by the app_voicemail.so module in Asterisk. The first, simply named VoiceMail(), does exactly what you would expect it to, which is to record a message in a mailbox. The second one, VoiceMailMain(), allows a caller to log into a mailbox to retrieve messages.

8.2.1. The VoiceMail() Dialplan Application

When you want to pass a call to voicemail, you need to provide two arguments: the mailbox (or mailboxes) in which the message should be left, and any options relating to this, such as which greeting to play or whether to mark the message as urgent. The structure of the VoiceMail() command is this: