Linksys WIP310 SPA500 Series and WIP310 IP Phone Administration Guide - Page 179

8 Configuring Dial Plans Dial plans determine how the digits are interpreted and transmitted. They also determine whether the dialed number is accepted or rejected. You can use a dial plan to facilitate dialing or to block certain types of calls such as long distance or international. If the Cisco SPA 500 Series and WIP310 IP Phones are part of the Cisco SPA 9000 Voice System, dial plans are configured on the Cisco SPA 9000. In installations where a Cisco SPA 9000 is not present (such as IP Centrex installations), installations where the phones are removed from the SPA 9000 (such as by a VPN), or other situations, dial plans can be configured on the IP phone using the web administration user interface. For more information on using dial plans on the Cisco SPA 9000 Voice System, see the Cisco SPA 9000 Voice System Administration Guide. See the Appendix C, "Where to Go From Here," for the location of the document. This section includes information that you need to understand dial plans, as well as procedures for configuring your own dial plans. This section includes the following topics: • About Dial Plans, page 168 • Editing Dial Plans on the IP Phone, page 178 About Dial Plans This section provides information to help you understand how dial plans are implemented. The Cisco SPA 500 Series and WIP310 IP Phones and the SPA 9000 are involved in applying various levels of the dial plans and process the digits sequence in the same manner. Cisco SPA 500 Series and WIP310 IP Phone Administration Guide 168