The SIP Forum announced today the next SIP trunking interoperability testing event to help drive industry-wide adoption of the SIPconnect 1.1 Technical Specification. The second annual interoperability testing event, SIPconnect-IT 2013, will be a five-day event held from May 6-10, 2013, at the University of New Hampshire Interoperability Laboratory (UNH-IOL)’s 32,000 square foot facility in Durham, New Hampshire.