Table of Contents

MWI Subscription
- Requirements
- Mailbox

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.