Specifications

Chapter 10 Migrating to an IP Telephony Network
Cisco Digital PBX Adapter (DPA)
10-22
Cisco IP Telephony Network Design Guide
78-11103-03
What If I Cannot Use SMDI?
SMDI might not be an option for you, particularly if you are using a digital
interface on your Octel systems. Octel systems with digital line cards emulate
digital phones, appearing to the PBX as digital extensions, referred to as per-port
or PBX Integration Cards (PICs). On PIC systems, the voice and data are on the
same path. MWI is set and cleared via feature access codes on dedicated ports.
Because these PIC ports use proprietary interfaces, you cannot use standard
interfaces to connect them to the Cisco CallManager system.
However, the DPA 7630 can translate these interfaces to enable communication
among the Octel, Lucent, and Cisco CallManager systems. Depending on the
needs of your network, you can choose among several different integration
methods.
Choosing an Integration Mode
Select an integration mode based on the needs of your IP telephony network:
• Simple—Used to integrate Cisco CallManager with existing Octel voice mail
systems. In this solution, you are not using a Lucent PBX system, or you are
choosing not to integrate it with your IP telephony system. See the “Using the
Simple Integration Mode” section on page 10-23.
• Hybrid—Used to integrate Cisco CallManager with existing Octel voice mail
systems and Lucent PBX systems. See the “Using the Hybrid Integration
Mode” section on page 10-24.
• Multiple—Used to integrate the systems in larger networks using a
combination of simple and hybrid scenarios, which requires multiple
DPA 7630 systems. See the “Using the Multiple Integration Mode” section on
page 10-25.