How can SIP trunking lower telecom costs without forcing an investment in new equipment?
A SIP trunk is an IP connection to a service provider that can route the Session Initiation Protocol. Since SIP is still evolving, service providers and vendors realized the need to standardize on a SIP connection interface. The SIP Forum, an independent industry organization, defined a set of interconnection rules called SIPconnect™. It is an interoperability guideline for linking a customer premise-based IP communications server with a service provider’s SIP-enabled network. Avaya Communication Manager 4.0 (and above), as well as SIP Enablement Services 4.0 (and above), support SIP trunking, and have received SIPconnect certification. By working with SIPconnect certified service providers, Avaya Communication Manager customers can switch over from their existing TDM-based connection to a SIP-based trunk without risking technical or operational incompatibilities. With SIP trunking, inter-office calls—for example, an extension in the corporate dial plan—are managed in a similar way to
