How to send a notification to Unity subscribers that their mailboxes are full in Cisco Unity with Microsoft Exchange

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Microsoft Exchange dictates the storage limits for subscriber mailboxes. There are three storage limits in Exchange and the Cisco Unity phone conversation warns subscribers when they have reached each one:

• Issue Warning When subscriber mailboxes reach the specified value for this storage limit, Cisco Unity notifies subscribers when they log on to Cisco Unity by phone by playing the prompt, "Note. Your Inbox is almost full. Please delete some messages now."
• Prohibit Send When subscriber mailboxes reach the specified value for this storage limit, subscribers are prohibited from sending messages. Cisco Unity notifies subscribers when they log on to Cisco Unity by phone and when they attempt to send a message by playing the prompt, "Sorry. Your Inbox is full. You cannot send new messages. Please delete some messages now."
• Prohibit Send and Receive When subscriber mailboxes reach the specified value for this storage limit, subscribers are prohibited from sending and receiving messages. Cisco Unity notifies subscribers when they log on to Cisco Unity by phone and when they attempt to send a message by playing the prompt, "Sorry. Your Inbox is full. You cannot send or receive new messages. Please delete some messages now."

Edit these two registry keys in order to enable Cisco Unity to check whether a subscriber mailbox is full when an outside caller tries to leave a message for the subscriber:

• A key that allows you to specify that Cisco Unity checks whether a subscriber mailbox is full when an outside caller wants to leave a message.
• A key that allows you to enable or disable the prompt that informs callers that they cannot leave a message when the mailbox is full. (Editing this key is optional.)

Complete these steps to enable the issue warning:

1. Select Start > Programs > Microsoft Exchange > System Manager.
2. Expand Servers > Server name > Expand First Storage Group.
3. Right-click on Mailbox Store.
4. Select limit tabs.

   This is where the three options of Issue Warning, Prohibit Send, and Prohibit Send and Receive are located.

Refer to the How Cisco Unity Handles Subscribers Whose Mailboxes Are Full section of Default Accounts and Message Handling for more information on how Cisco Unity Handles full subscriber mailboxes.

Refer to Understanding How Exchange 2000 Storage Limits Work with Cisco Unity (Versions 4.0, 3.1, and 3.0 with Microsoft Exchange for more information.