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Cisco DPA 7630/7610 Voice Mail Gateways Administration Guide
78-11069-03
Chapter 1
Overview
Understanding How the DPA 7630/7610 Works
These sections provide an understanding of the purpose of the DPA 7630/7610:
•
Why is the DPA 7630/7610 Needed?, page 1-9
•
Can I Just Use SMDI?, page 1-9
•
What If I Cannot Use SMDI?, page 1-10
Why is the DPA 7630/7610 Needed?
If you want to migrate your telephony system from a Definity G3 PBX or a
Meridian 1 PBX to Cisco CallManager, you must decide whether to do a complete
cutover to Cisco CallManager or to migrate slowly. If you do a complete cutover
to Cisco CallManager and Cisco’s voice mail solution, you do not need the
DPA 7630/7610. However, if you are slowly migrating your systems, you might
want to maintain some phones on the Definity or Meridian 1 PBX while installing
new phones on the Cisco CallManager system. You might want to use your
existing Octel voice mail system with your Cisco CallManager system. In these
cases, the DPA 7630/7610 can assist your migration to Cisco CallManager.
Can I Just Use SMDI?
One difficulty with migration is that voice mail systems such as Octel were
designed to integrate to only one PBX at a time. To resolve this difficulty, many
people use Simplified Message Desk Interface (SMDI), which was designed to
enable integrated voice mail services to multiple clients.
However, to use SMDI, your voice mail system must meet several qualifications:
•
It must have sufficient database capacity to support two PBX systems
simultaneously and to associate each mailbox with the correct PBX in order
to send MWI information on the correct link.
•
It must be possible to physically connect the IP network to the voice
messaging system while maintaining the existing physical link to the PBX.
•
It must support analog integration. SMDI is primarily an analog technology.
Additionally, SMDI requires reconfiguration of your existing telephony network.
Содержание DPA 7610
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