lls is becoming nebulous in the current era of SIP trunks where a geo- graphic tie between a phone number and call routing is tenuous at best. If local calls are included in the SIP trunk offering from the provider, are the calls local only to the site where the trunk physically terminates into your network, or also for local calls to geo- graphically distant sites, or a subset of sites in your network? Each geographic region has different definition of local and long-distance calls, and you should consider these requirements for each site and discuss the definition of these call types with your SIP trunk provider. 84 SIP Trunking Single or Multiple Physical Entry Points If the provider offers a single physical connection, the best choice might be to place this connection at your head office (campus) or data center. If the offering includes multiple physical entry points (within the cost bounds of the service you are willing to consider implementing), having connectivity from multiple sites might make more sense. This type of offering is frequently the case if the provider already offers your Multiprotocol Label Switching (MPLS) data services to remote sites, and there is already physical connectivity into each of your sites from the provider's network. International Call Access If your network spans multiple countries, you might require a different SIP trunk entry point per country, and these entry points might be from different SPs, within each region or country (for example, one in the United States and at least one in Europe). This determination can be important for regulatory requirements, emergency call routing, and network efficiency. Physical Termination of Traffic into Your Network If you are a smaller business and have a small integrated information technology (IT) organization, getting voice (SIP trunk) and data access on the same physical connection from the provider might make the most sense. On the other hand, if your organization is larger and has distinct voice, security, and data IT operations st