Chapter 2
Choosing an Integration Mode
Using the Multiple Integration
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Cisco DPA 7630/7610 Voice Mail Gateways Administration Guide
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DPA 7630 loses its connection to Cisco CallManager and/or the PBX system, the
ports connecting to the first DPA 7630 are disabled, and the Octel system only
sends MWIs to the second DPA.
For simplicity, the scenarios for achieving Cisco CallManager and PBX
redundancy are described separately. However, you can combine these two
scenarios in your network.
Cisco CallManager Redundancy
Figure 2-9
provides an overview of the network configuration if you want to
ensure that the DPA 7630/7610 can still pass information from the Octel system
to Cisco CallManager even if the connection to one DPA 7630/7610 is lost.
In this scenario, the settings and wirings on both DPA systems should both be
configured similarly, evenly distributing the call processing and MWI lines
between the two systems. For example, if you have 44 voice ports and 4 MWI
lines, on each DPA system you could use ports 1-22 for call processing lines and
ports 23 and 24 for MWI lines.
You should also connect each DPA system to different switches. Thus, if one
switch should go down or lose its connection to the network, at least one DPA
system would still be connected and able to communicate with
Cisco CallManager.
Finally, be sure to set the appropriate port disable policy. For details, see the
“Setting the Port Disable Policy on the DPA 7630” section on page 6-3
and the
“Setting the Port Disable Policy on the DPA 7610” section on page 6-7
.
This scenario works in the following manner:
1.
The IP connection from the first DPA 7630/7610 goes down, preventing the
DPA 7630/7610 from sending MWI information to Cisco CallManager. The
DPA 7630/7610 is still receiving messages from the Octel system, but they
are queuing.
2.
If you have set the port disable policy on the first DPA 7630/7610, it notices
that the link has gone down and disables its connection to the Octel system.
3.
The Octel system now sends MWI commands only to the second
DPA 7630/7610, which continues to pass MWI commands to
Cisco CallManager.
