Written by: Lars-Örjan Kling, Åke Lindholm, Lars Marklund and Gunnar B. Nilsson

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CPP is a carrier-class technology that has been positioned for access and transport products in mobile and fixed networks. It is an execution and transport platform with specified interfaces for application design. The execution part consists of support for the design of application hardware and software. The transport part, which can be seen as an internal application on the execution platform, consists of several protocols for communication, signaling, and ET transmission. Typical applications on current versions of CPP include third-generation nodes—RBSs, RNCs, media gateways, and packet-data service nodes/home agents. CPP was first developed for asynchronous transfer mode ATM and TDM transport. Now, support is being added for IP transport.

The authors describe the technical and customer benefits of adding IP support in CPP, walking the reader through the basic principles for IP services in CPP and the CPP IP architecture, which is very robust and scalable.

[First published in Ericsson Review no. 02, 2002]