Chapter 6 Integrating Cisco Unity with the Phone System
How an Integration Works
Lines and Cables to Make Physical Connections
Depending on the type of integration, different combinations of lines and cables are used to connect the phone system and Cisco Unity.
Integration with Cisco Unified Communications Manager
Cisco Unified Communications Manager (CM) (formerly known as Cisco Unified CallManager) and SIP proxy servers use network connections that carry all communication to and from Cisco Unity. Figure
Figure 6-1 Connections for an Integration with Cisco Unified Communications Manager
Cisco
Unity server
| Gateway |
PSTN | LAN |
| V |
Cisco Unified CallManager
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Digital Integration with Digital PIMG Units
The phone system sends call information, MWI requests, and voice connections through the digital lines, which connect the phone system to the PIMG units. The PIMG units communicate with the Cisco Unity server through the LAN or WAN by using Session Initiation Protocol (SIP). Figure
Figure 6-2 Connections for a Digital Integration by Using Digital PIMG Units
Phone system
Additional
PIMG units as needed
PIMG unit
LAN/WAN PIMG unit
Digital lines
Network connections
Cisco Unity server
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Design Guide for Cisco Unity Release 5.x
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