Network resource reservation in the next generation networks using BICC as a call control protocol

Architecture of the next generation telecommunication network is based on the separation of functionality into independent layers: control layer, a connectivity layer and an application layer. BICC and other Call Control Protocols share the resources in the connectivity layer. The connectivity layer handles the transport and manipulation of user and control data and comprises transport backbone elements and Media Gateways. Media Gateways have been introduced to provide bearer control function and media mapping/switching functions. Resource reservation for Bearer Independent Call Control protocol has most important role in the call set-up. The paper gives a detailed overview of bearer set-up procedures in ATM and IP networks based on BICC ITU-T recommendations.