MWI Subscription
- This method is for if a phone doesn't support anonymous SIP notify, but supports subscription.
- The DuVoice system can handle SIP subscriptions for a maximum of 250 extensions.
- This limit is due to the SIP stack and not a configuration setting which can be changed.
Requirements
- DuVoice v7.1 (and above).
- Phone support custom 3rd party address for Message Waiting subscription.
- Phone extension must match mailbox number or have the ability to specify the account.
- DuVoice must be able to send network packets directly to the gateway.
- DuVoice must be licensed for SIP.
Mailbox
- No special configuration must be performed in the mailbox.
- Leave the MWI addresses as the extension which is the default setting. Using a SIP address will cause subscriptions to fail.