Cisco Systems 5.x manual Private Messages

Chapter 1 Networking in Cisco Unity

Comparison of AMIS, Bridge, and VPIM Networking

Table 1-16	Private Messages
AMIS		Bridge	VPIM
The AMIS protocol does not support		Supported. Messages marked private	Supported. Messages marked private
this functionality. Messages marked		when they are sent are marked private	when they are sent are marked private
private when they are sent are not		when the recipient retrieves them.	when the recipient retrieves them.
marked private when the recipient
retrieves them.
Table 1-17	Secure Messages
AMIS		Bridge	VPIM
Incoming messages cannot be		With default settings: Incoming messages	With default settings: Incoming messages
encrypted before being delivered to		will not be encrypted before being	will not be encrypted before being
the local recipient.		delivered to the local recipient. Outgoing	delivered to the local recipient. Outgoing
With default settings: Outgoing		secure messages are undeliverable and	secure messages are undeliverable and
		will generate an NDR.	will generate an NDR.
secure messages are undeliverable
and will generate an NDR.		When configured: Incoming messages are	When configured: Incoming messages are
When configured: Outgoing secure		encrypted before being delivered to the	encrypted before being delivered to the
		local recipient. Outgoing secure	local recipient. Outgoing secure
messages are decrypted by the Voice
Connector and the message is no		messages are decrypted by the Voice	messages are decrypted by the Voice
		Connector and the message is no longer	Connector and can be re-encrypted if the
longer secure.
		secure.	receiving server is Cisco Unity with
			Exchange and if secure messaging is
			configured. During transport outside the
			Cisco Unity system, messages are not
			encrypted.
Table 1-18	Simultaneous Analog Sessions for Message Delivery to or from Remote Voice Mail Systems
AMIS		Bridge	VPIM
Supported.		Supported.	N/A.
Limited to the voice mail port		Limited to Bridge server analog port
availability on the AMIS bridgehead		availability.
server.		Maximum number of ports to deliver
Ports available to place outgoing		simultaneously to any single node, and
AMIS calls can be configured in the		the threshold to initiate and disconnect
Cisco Unity Administrator (but not		additional calls, can be configured per
per AMIS destination).		Bridge server.

	Networking Guide for Cisco Unity Release 5.x (With Microsoft Exchange)
1-12	OL-13844-01