A SIP-Trunk is used to connect a corporate telephone exchange (PBX) or standalone telephone set to the global public telephone network via the Internet or other IP network. This allows users from all over the world to make and receive calls. A SIP-trunk is comparable to a network connection, such as an analog or ISDN connection for fixed telephony. The difference with a SIP-Trunk is that calls are no longer made over the traditional telephone line, but over a data connection. An advantage is that the number of simultaneous calls over a SIP-Trunk can be easily configured and is no longer tied to the location where the service is provided.

A Qupra SIP-Trunk is suitable for all types of telephone exchanges that support the SIP-protocol. Compared to traditional telephony, SIP-Trunk achieves significant cost savings in subscription and traffic costs.

With a SIP-Trunk, users can call fixed, mobile and other virtual telephone numbers. 088, 085, 0800, 0900, international numbers can be delivered directly to the SIP-Trunk. To request a SIP-Trunk, a Service Order Form is completed.