The capability of TELES Business Trunking solution allows interconnecting with existing PBX systems based on VoIP and SIP, leverag-ing the broadband connectivity for enterprise incoming / outgoing voice calls. VoIP call termination to the Public switched telephony network (PSTN) could be either on ISDN or ISUP/SS7. An ENUM Gateway is also included as an essential component in the state of the art Teles Business Trunking solution.
