SIP Trunks provide a highly cost effective and reliable service for connecting customer IP PBXs to public networks. Now businesses can replace old ISDN and analogue technology with an internet protocol (IP) based service for improved productivity and reduced cost.

Traditional telephone calls to and from an office are routed via the public telephone network via analogue or digital ISDN lines to the company private branch exchange (PBX). These lines have limited flexibility in capacity, and simply provide users with the means to route inbound and outbound calls directly to a site, with no ability to redirect calls in, for example, a disaster recovery scenario.

Key customer benefits of SIP Trunks:

• Lower rental costs Reduce ISDN rental costs by replacing with SIP Trunks
• Lower call charges Interactive Connection SIP Trunk call rates are highly competitive and considerably lower than ISDN call charges
• Approved PBX interop Interactive Connection works with leading PBX vendors to approve interoperability and verify features
• Migration to Hosted VoIP SIP Trunks provide a seamless transition to replace the PBX with Hosted IP Telephony
• DR service SIP Trunks provide the ability to reroute inbound calls for effective disaster recovery
• Reliability Interactive Connection hosted services are designed to achieve 99.999% “carrier grade” availability
• Flexibility Services can be added in single lines with rapid provisioning to avoid underutilised capacity.