Send Message Waiting Notification to subscriber(s) of mailbox.
This application is part of the Mini-Voicemail system, configured in
MinivmMWI is used to send message waiting indication to any devices whose channels have subscribed to the mailbox passed in the first parameter.
username- Voicemail username
domain- Voicemail domain
urgent- Number of urgent messages in mailbox.
new- Number of new messages in mailbox.
old- Number of old messages in mailbox.
This documentation was imported from Asterisk Version 18