PARTNER Messaging provides four General Mailboxes — one for each Automated Attendant.
The General Mailbox Owner is the extension whose Message Waiting Light is turned on whenever a message is placed in the General Mailbox. The factory setting for the General Mailbox Owner is extension 10. You can program a different General Mailbox Owner for each General Mailbox or you can have the same owner for all the General Mailboxes.
To program General Mailbox owner(s):
Procedures
Programming System Language Mode and System Language