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Implementing Cisco Unified Communications Manager, Part 2 (CIPT2) Foundation Learning Guide: (CCNP Voice CIPT2 642–457), Second Edition by Chris Olsen

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Chapter 4. Implementing a Dial Plan for International Multisite Deployments

Upon completing this chapter, you will be able to implement a dial plan to support inbound and outbound PSTN dialing, site-code dialing, and TEHO. You will be able to meet these objectives:

• Identify dial plan issues and possible solutions

• Describe how site codes and transformation masks solve issues caused by overlapping directory numbers

• Implement PSTN access in a multisite deployment

• Implement selective PSTN breakout

• Describe how to use the PSTN as a backup for calls to other VoIP domains

• Implement TEHO

• Describe the concept of globalized call routing and how it simplifies dial plans in international multisite deployments with centralized call processing ...

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