win2call is a leading developer of carrier grade (class 4 / 5) softswitch technology for next generation Internet Telephony (VoIP) providers. win2call delivers a complete network management solution for VoIP carriers on a single platform. This call-control software package enables service providers to build scalable and reliable VoIP networks. Based on the Session Initiation Protocol (SIP), it offers a full array of call-routing capabilities to maximize performance for both small and large packet voice networks