SIP Trunking uses Internet Protocol (IP) to enable organisations to place telephone calls through the Public Switched Telephone Network (PSTN). SIP trunking technology requires either an Internet connection, or a VoIP vendor, an IP-enabled PBX, and a border element or gateway to support IP-based voice communications. Using SIP, voice becomes an application on the IP Network... like email or web is an application.
Can I retain my customer’s existing IP PBX equipment?
If you have a SIP capable PBX, you can use our SIP Trunks service with this equipment to provide a telephony solution. If your PBX is not SIP capable, we have a range of SIP gateway products to allow you to connect to our SIP trunks.