Session Initiation Protocol (SIP) has become the gateway for unified communications. SIP allows communication between devices on a network. SIP services are frequently replacing traditional PRI services — lowering monthly telephone expenditures. In addition, most new IP premise-based PBX’s are interoperable with SIP trunks.
Some of the benefits of SIP include:
- The easy ability to add optional services and unified communications applications.
- Elimination of the need for dedicated phone lines and/or costly ISDN connections.
- Delivery of services over one connection.
- Increased efficiency.
- Allowance of geographic phone numbers without costly RCF.
- Scales up or down easily and quickly through a software configuration change offering automatic and on-demand burst capabilities.
- Automatic call re-routing to pre-defined locations should the location go offline.