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Chapter 10 Migrating to an IP Telephony Network

Cisco Digital PBX Adapter (DPA)

10-26

Cisco IP Telephony Network Design Guide

78-11103-03

You might add multiple DPA 7630 systems to your network if you are using the

DPA 7630 to capacity, and you need the following capability:

• More than eight MWI ports to the Lucent system.

If you need more MWI ports to the Lucent system, add an additional

DPA 7630 in hybrid mode. However, you cannot use all 24 ports for

Lucent MWIs. You must configure the DPA 7630 by following the guidelines

for the hybrid integration, using up to eight ports.

• More than eight ports for call processing between the Cisco CallManager and

Octel systems.

If you need more than eight ports for handling calls between

Cisco CallManager and the Octel systems, add another DPA 7630 in simple

mode. This would provide another full 24 ports dedicated to call processing

between the two systems.

Alternatively, you might also use an additional DPA 7630 to achieve a higher level

of fault tolerance. In this situation, you can use two DPA 7630 devices in parallel,

sharing the MWI lines between the two units. If one unit fails, the Octel would

use only the lines that were still operational, allowing voice mail to function

normally.

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Cisco WS-X4604-GWY - VoIP Gateway Especificaciones Pagina 228