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Implementing Site-Code Dialing

In this article I’m describing the implementation of site codes and inter-site dialing, in my home lab.

Site codes

  • HQ: 801
  • site 2: 803

Inter-site code: I’ll use the 0 to dial inter-sites.

The purpose is to use inter-side code dialing to reach other sites across the WAN, and if the WAN breaks then across the PSTN. (see: example of toll bypass and PSTN fallback)

Site-code dialing: CUCM configuration

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Site-code dialing: HQ gateway configuration

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Site-code dialing: Site 2 gateway configuration

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Site-code dialing: emulated-PSTN configuration

site-code-dialing--2016-06-11 16_42_35

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Testing the configuration

WAN is up between HQ and Site 2

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WAN is down: fallback to PSTN

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