Cisco Unity Connection Notification Interface (CUNI) API -- CUNI FAQs
From DocWiki
* Where can I get the WSDL
http://<connection-server>/messageeventservice/services/MessageEventService?wsdl
Note: the WSDL is the same across versions *except* that for 8.0 there was a "keepAlive" parameter added to the "subscribe" method.
* What happens to subscriptions if the Unity Connection server is restarted?
Subscriptions are stored in the database. When Unity Connection is restarted, the Notifier reads the existing subscriptions and begins sending out notifications.
* Are there any unsupported methods?
Yes - subscribeForAllResources currently not supported, so users must be listed explicitly. Also there's not currently support for SSL connections for callbacks.
* Can multiple subscriptions use the same callback URL?
Not exactly - if Unity Connection sees a repeat subscription for a callback URL it will delete the previous subscription as a safeguard against ending up with unintentional subscriptions.