Cisco Systems 5.x manual Vpim Networking and Blind Addressing

Chapter 7 VPIM Networking

VPIM Concepts and Definitions

VPIM Networking and Blind Addressing

Blind addressing is one of the methods that Cisco Unity provides for addressing VPIM messages to users of another voice messaging system. Blind addressing allows Cisco Unity to address messages without having specific information about the recipients on the remote voice messaging system (such as their names and mailbox numbers). One of the steps to setting up blind addressing is to change the Blind Addressing setting on the Primary Location > Addressing Options page to something other than None. You also create a VPIM delivery location that corresponds to each voice messaging system with which Cisco Unity communicates.

You provide the following key information for each delivery location:

•Dial ID—A unique number that identifies the location to Cisco Unity. This is the number that subscribers dial when blind addressing messages to individuals who use the remote voice messaging system.

•SMTP Domain Name—The Internet-addressable SMTP domain name that is used to construct addresses for individuals who use the voice messaging system that corresponds to the delivery location.

When blind addressing a message, subscribers dial a number that is made up of the delivery location Dial ID and the mailbox number of the recipient. Before addressing the message, Cisco Unity parses the number that the subscriber enters and searches for a matching delivery location. If Cisco Unity does not find a matching location, it reports the error to the sender and does not address the message. If a matching delivery location is found, Cisco Unity addresses the message without verifying that the remote mailbox number exists. Cisco Unity does provide voice name confirmation that the delivery location exists before addressing the message (assuming that a voice name was recorded for the delivery location).

Subscriber Experience with Blind Addressing

Subscribers can address messages by using the phone, ViewMail for Outlook, or the Cisco Unity Inbox. To address a message by using ViewMail or the Cisco Unity Inbox, subscribers enter the address in the following format:

[VPIM:<Delivery Location Dial ID>_<Remote Mailbox Number>]

Note ViewMail requires the square brackets in the address.

Because your Cisco Unity server does not have access to the names, extensions, and recorded voice names of the people who use the other voice messaging system, subscribers will encounter some limitations with blind addressing:

•When addressing a message, the sender does not hear voice name confirmation. Cisco Unity cannot verify that the entered number is correct, so subscribers may inadvertently address a message to the wrong person or to a non-existent extension. However, subscribers will receive an NDR if the number turns out to be an invalid extension.

•When addressing a message, subscribers cannot use spelled-name mode; subscribers address the message only by using number mode, so they must know the delivery location Dial ID and the mailbox number for the recipient.

•Blind addresses cannot be added to public distribution lists.

•When subscribers use the phone to listen to messages from someone at the VPIM location, the conversation (also known as the telephone user interface, or TUI) cannot identify the sender.

	Networking Guide for Cisco Unity Release 5.x (With Microsoft Exchange)
OL-13844-01		7-43