Carrier point-to-point connections are used in particular for complex applications requiring a high bandwidth and a high availability rate. Many providers use CP2Ps to optimise landlines, for example, or to connect wireless base stations for mobile communication applications to their network. Carrier point-to-point connections with sufficiently high bit rates can also be used to link entire computer centres. This allows the provider to offer services such as cloud telephone systems with high availability and trans-regional redundancy. The carrier client’s data can be transferred securely, quickly and reliably from one point to another.
Due to the high number of different carrier point-to-point connections available with differing bandwidths, a variety of technologies and interfaces are used. A CP2P can be established via copper cable, coaxial cable or fibre-optic cables. The possible data rates range from two megabits per second up to 40 gigabits per second and higher. In line with ITU recommendations and IEEE standards, Ethernet, SDH, FICON, FC or OTM interfaces are used. At the respective CP2P terminals, circuit-terminating devices terminate the line and provide the interfaces for connection with the telecommunications equipment. Typical interfaces for point-to-point connections with low bandwidths such as two or 34 megabits per second are G.703/G.704. Point-to-point connections for Ethernet transmission have 10, 100 or 1,000 megabit per second Ethernet interfaces in accordance with the IEEE 802.3 standard. A CP2P providing 40 gigabits per second typically uses the optical transport network interface in accordance with ITU-T G.709.