Help: VoPSTN using Dial plan.

[guwb]

I would like to have a sample configuration how this works.

Let's say HQ is 2xxx and branch is 3xxx. What dial plan should I configure?

[jconi]

Are you looking for AAR or only how to translate the phone numbers?

[guwb]

This is from Callmanager 5.x SRND:

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The centralized call processing deployment model can be adapted so that inter-site voice media is sent over the PSTN instead of the WAN. With this configuration, the signaling (call control) of all telephony

endpoints is still controlled by the central Cisco Unified CallManager cluster, therefore this Voice over the PSTN (VoPSTN) model variation still requires a QoS-enabled WAN with appropriate bandwidth configured for the signaling traffic.

You can implement VoPSTN in one of the following ways:

? Using the automated alternate routing (AAR) feature.

? Using a combination of dial plan constructs in both Cisco Unified CallManager and the PSTN gateways.

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so there are two options. I would like to learn more about the second one.