The system modules of hIPer™ are: CRM Radius Translator Rating and Discounting Mediation 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 NoCatAuth © NoCatNet Tequet softswitch © Deverto Tenor softswitch © Quintum Cisco network access servers and media gateways