Although 3Com sold CommWorks to UTStarcom, they retained intellectual property rights to the softswitch technology. After modifying the software to enable enterprise PBX features, 3Com released this technology as VCX, the industry's first pure SIP PBX, in 2003.
although 3com sold commworks to utstarcom they retained intellectual property rights to the softswitch technology after modifying the software to enable enterprise pbx features 3com released this technology as vcx the industry's first pure sip pbx in 2003