Chapter 6 Integrating Cisco Unity with the Phone System
How an Integration Works
DTMF Integration with Analog PIMG Units
The phone system sends call information, MWI requests, and voice connections through the analog 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 6-3 Connections for a DTMF Integration by Using Analog PIMG Units
Phone system
Additional
PIMG units as needed
PIMG unit
LAN/WAN PIMG unit
Analog lines
Network connections
Cisco Unity server
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Design Guide for Cisco Unity Release 5.x
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