Multisite dial plans have to address special issues, such as overlapping and nonconsecutive directory numbers, public switched telephone network (PSTN) access, PSTN backup, and tail-end hop-off (TEHO). This chapter describes how to build multisite dial plans using CUCM and Cisco IOS gateways.
Upon completing this chapter, you will be able to implement a dial plan to support inbound and outbound PSTN dialing, site-code dialing, and tail-end hop-off. You will be able to meet these objectives:
Identify dial plan issues and possible solutions
Describe how site codes ...