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Networking Guide for Cisco Unity Release 5.x (With Microsoft Exchange)
OL-13844-01
Chapter 1 Networking in Cisco Unity
Message Addressing Options
Message Addressing Options
With AMIS, Bridge, and VPIM Networking, you can set up different addressing options, as follows:
• Blind Addressing—With blind addressing, Cisco Unity has the information it needs to send
messages to the remote voice messaging system, even though the recipient mailbox number, text
name, and recorded name are not in the directory.
• “External” Subscribers—You create AMIS, Bridge, and/or VPIM subscribers on the local
Cisco Unity server to correspond to subscribers on the remote voice messaging system. These
external subscribers (also referred to as “proxy users” or “remote subscribers”) can have local
extensions, recorded voice names, and greetings, and can be listed in the directory. However, they
do not have mailboxes in the local Exchange network. Messages are addressed to an external
subscriber as they are to a regular subscriber, but the messages are sent to the applicable mailbox on
the remote voice messaging system. External subscribers have corresponding Active Directory
contacts.
Internet Subscribers Allows messaging with individuals over the Internet or any TCP/IP network by using SMTP. The
recipient receives the message as an e-mail with a WAV attachment. Internet subscribers can have
local extensions, recorded voice names, and greetings, and be listed in the directory, but they do
not have mailboxes in the local Exchange network. Messages are addressed to Internet subscribers
as they are to regular subscribers, but the messages are sent to the e-mail address that you specify
when creating the Internet subscriber account.
Trusted Internet
Subscribers
Trusted Internet subscribers are Internet subscribers that are trusted with decrypted secure
messages. Trusted Internet subscribers must be associated with a Trusted Internet Location. Secure
messages to Trusted Internet subscribers are decrypted by the Cisco Unity Voice Connector for
Microsoft Exchange before they are sent by the Exchange server. (Messages to regular Internet
subscribers are sent directly by the Exchange server and cannot be decrypted and therefore cannot
be played by the recipient.)
AMIS Allows messaging with other voice messaging systems that support the Audio Messaging
Interchange Specification analog (AMIS-a) protocol. In essence, the sending voice messaging
system calls the receiving voice messaging system, there is an exchange of DTMF tones as defined
by the protocol, the sending system plays the message, and the receiving system records it.
Bridge Allows messaging between Cisco Unity and an Octel system on an Octel analog network by using
the Cisco Unity Bridge. The Cisco Unity Bridge acts as a networking gateway between
Cisco Unity and the Octel system, and allows the systems to exchange voice and fax messages.
Messaging between Cisco Unity and the Bridge is done over the Internet or any TCP/IP network
by using SMTP. Messaging between the Octel servers and the Bridge is done by using the Octel
analog networking protocol. The Bridge must be installed on a separate and dedicated platform.
VPIM Allows messaging with other voice messaging systems that support the Voice Profile for Internet
Mail (VPIM) protocol. VPIM allows different voice messaging systems to exchange voice, text,
and fax messages over the Internet or any TCP/IP network. VPIM is based on SMTP and the
Multi-Purpose Internet Mail Extension (MIME) protocol. VPIM Networking can be used for
messaging between Cisco Unity servers that access different directories, between Cisco Unity and
Cisco Unity Express, and between Cisco Unity with Exchange and Cisco Unity with Domino
systems.
Table 1-1 Networking Options (continued)
Networking Option Description