Cisco DPA Integration
This chapter provides information about the Cisco DPA 7630 and
7610 Voice Mail Gateways (DPA 7630/7610) which enable you to integrate
Cisco Unified Communications Manager systems with Octel voice-messaging systems,
which might also connect to either Definity or Meridian 1 PBX systems. This
integration enables you to use your existing third-party telephony systems
along with your Cisco IP telephony system.
For example, you can ensure that features such as
message-waiting indicators (MWI) for Octel voice messages are properly set on
Cisco Unified IP Phones (connected to
Cisco Unified Communications Manager) and traditional telephony phones (connected
to Definity or Meridian 1 PBX systems).
Using the DPA 7630/7610, you can integrate the following
Cisco Communications Manager 3.1(1) or higher
Octel 200 and 300 voice-messaging systems (using APIC/NPIC
Octel 250 and 350 voice-messaging systems (using FLT-A/FLT-N
Definity G3 PBX systems (DPA 7630 only)
Meridian 1 PBX systems (DPA 7610 only)
This section provides an overview of the DPA 7630/7610 and its
interactions with the other components in traditional and IP telephony
The DPA 7630/7610 functions as a gateway between Cisco Unified Communications Manager and an Octel system (which may connect to a PBX system) and performs these tasks:
Determines the call type from Cisco Unified Communications Manager and sends display, light, and ring messages to the Octel system.
Determines when the Octel system is attempting to transfer, set message waiting indicators (MWI) and so on, and sends the appropriate messages to Cisco Unified Communications Manager.
Converts dual-tone multi frequency (DTMF) tones to Skinny Client Control Protocol messages.
Provides companding-law transcoding and voice compression.
Performs Real-Time Transport Protocol (RTP) encapsulation of the voice message.
DPA 7630/7610 Overview
With the Cisco DPA 7630/7610, you can integrate your existing
Octel voice-messaging system with
Cisco Unified Communications Manager and either a Definity PBX system or a Meridian
1 PBX system. If you have a Definity PBX, use the DPA 7630; if you have a
Meridian 1 system, use the DPA 7610.
The DPA 7630/7610 functions by emulating digital phone or PBX
systems. This capability allows it to appear like these devices to
Cisco Unified Communications Manager, Octel, Definity, and Meridian 1 systems.
The following figure illustrates the Cisco DPA.
Figure 1. Cisco DPA
When to Use the DPA 7630/7610
If you want to migrate your telephony system from a Definity G3 PBX or a Meridian 1 PBX to Cisco Unified Communications Manager, you must decide whether to do a complete cutover to Cisco Unified Communications Manager or to migrate slowly. If you do a complete cutover to Cisco Unified Communications Manager and Cisco voice-messaging 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 you are installing new phones on the Cisco Unified Communications Manager system. You might want to use your existing Octel voice-messaging system with your Cisco Unified Communications Manager system. In these cases, the DPA 7630/7610 can assist your migration to Cisco Unified Communications Manager.