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Design Guide for Cisco Unity Release 5.x
OL-14619-01
Chapter 6 Integrating Cisco Unity with the Phone System
Integrating with Circuit-Switched Phone Systems by Using PIMG or TIMG Units
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 6-13 shows the
connections for a DTMF integration by using analog PIMG units.
Figure 6-13 Connections for a DTMF Integration by Using Analog PIMG Units
Serial (SMDI, MCI, or MD-110) Integration with Analog PIMG Units
The phone system sends call information and MWI requests through the data link, which is an RS-232
serial cable that connects the phone system and the master PIMG unit. Voice connections are sent
through the analog lines between the phone system and the PIMG units. The PIMG units communicate
with the Cisco
Unity server through the LAN or WAN by using Session Initialization Protocol (SIP).
Figure 6-14 shows the connections for a serial integration by using analog PIMG units.
Analog lines
Network connections
Phone system
Cisco Unity server
119418
LAN/WAN
PIMG unit
Additional
PIMG units
as needed
PIMG unit