Table Of Contents
Integrations with Multiple Phone Systems
Introduction
See the following sections in this chapter:
•
Integrations with Multiple Phone Systems
Integration Description
The Cisco Unified Communications Manager (CM) Express (formerly known as Cisco Unified CallManager Express) SCCP integration uses a LAN to connect Cisco Unity and the phone system. The Cisco Unified Communications Manager Express also provides connections to the PSTN. Figure 1-1 shows the connections for a system with a single Cisco Unified CM Express router.
Figure 1-1 Connections Between a Single Cisco Unified Communications Manager Express Router and Cisco Unity
Figure 1-2 shows the connections for a system with multiple Cisco Unified CM Express router and a single Cisco Unity server. One Cisco Unified CM Express router acts as the SIP MWI server, and the remaining Cisco Unified CM Express routers act as SIP MWI clients. Note that Cisco Unity voice messaging ports register with only the SIP MWI server (the Cisco Unified CM Express router that is on the same LAN as the Cisco Unity server), not with the SIP MWI clients.
Figure 1-2 Connections Between Multiple Cisco Unified Communications Manager Express Routers and a Single Cisco Unity Server
For a list of supported versions of Cisco Unified CM Express that are qualified to integrate with Cisco Unity by Skinny Call Control Protocol (SCCP), see the SCCP Compatibility Matrix: Cisco Unity, the Cisco Unity-CM TSP, Cisco Unified Communications Manager, and Cisco Unified Communications Manager Express at http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_device_support_tables_list.html.
Call Information
The phone system sends the following information with forwarded calls:
•
•
•
Cisco Unity uses this information to answer the call appropriately. For example, a call forwarded to Cisco Unity is answered with the personal greeting of the subscriber. If the phone system routes the call without this information, Cisco Unity answers with the opening greeting.
When forwarding calls to greetings, Cisco Unity uses the original redirected number, not the last redirected number. For example, when A calls B and forwards the call to C whose phone forwards to voice mail, the call will go to the voice mailbox for B.
Integration Functionality
The Cisco Unified CM Express SCCP integration with Cisco Unity provides the following features:
•
•
•
•
•
•
These integration features are not available to analog phones connected through FXS ports on the Cisco Unified CM Express phone system. Analog phones connected to ATA, however, support all integration features, except MWIs (MWI lamps will not light, though the stutter dial tone will sound).
Integrations with Multiple Phone Systems
Cisco Unity can be integrated with two or more phone systems at one time. For information on the maximum supported combinations and instructions for integrating Cisco Unity with multiple phone systems, see the Multiple Phone System Integration Guide for Cisco Unity 5.0 at http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_installation_and_configuration_guides_list.html.
