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Ericsson MD-110 Serial Integration Guide
OL-1290-01
2
Dual Phone System Integration
Cisco Unity can be integrated with one each of the following phone systems at the
same time:
• A traditional, circuit-switched phone system. Any traditional phone system
that Cisco Unity integrates with can be used in a dual phone system
integration.
• Cisco CallManager.
All extensions for subscribers and call handlers must be unique regardless of
which phone system a subscriber (or call handler) uses. To transfer calls from one
phone system to the other, Cisco Unity must dial the same access codes that a
subscriber dials when calling someone on the other phone system.
Dual Phone System Integration Overview
Before performing the following integration steps, confirm that the Cisco Unity
™
server is ready for the integration by completing the appropriate tasks in Chapters
1 through 3 of the Cisco Unity Installation Guide.
Integration Steps When No Phone Systems Are Installed
Follow these steps to set up the dual phone system integration when no phone
systems are installed.
1. Install the traditional phone system.