Over the last years the VoIP community has adopted SIP as its protocol of choice for the signaling necessary for establishing, managing and disconnecting voice and video sessions. SIP is an RFC standard (RFC 3261) from the Internet Engineering Task Force (IETF).
Voice calls initiated from the SIP IP network can either be terminated in the IP or in the PSTN network, for this the Media Gateway should be SIP enabled. EuroMACC has integrated its hIPer™ system with SER server, a widely used SIP soft switch, and other Radius-enabled soft switches.

The system modules used for this service are:   CRM   Radius Translator   Rating and Discounting   Billing   Account and Balance Management

The hIPer system is integrated with the following external components:   VSU (Voice Switching Unit) © EuroMACC   SSC (SIP Session Controller) © EuroMACC   SER (SIP Express Router) © iptel.org   RTP proxy © Maxim Sobolev   VoiceMail © iptel.org   Tequet softswitch © Deverto   Tenor softswitch © Quintum   other softswitches   Cisco network access servers   and media gateways