SIP
Anyone considering SIP-trunking services as part of their telephony strategy ought to familiarize themselves with the SIP Forum’s SIPConnect specification. SIPconnect tries to overcome interoperability concerns by specifying exact methods that service provider and IP-PBXs interconnect. Many vendors and service providers have already expressed support for SIPconnect, though limitations in SIPconnect have led the SIP Forum to begin work on version 1.1 of the standard. Talk to your vendors and service providers to understand their adoption of SIPconnect, as well as the VOIP systems that they have certified to work with their SIP trunking offerings.
