A modular architecture of upper protocol signalling at the NNI for B-ISDN in Korea

In this paper we propose applicable methodology using simple scenarios for the architecture and procedure of signalling at the NNI for B-ISDN in Korea. ATM-based B-ISDN can support the broadband transmission functions to provide various services with diverse bandwidths requirements such as multimedia service. Therefore the control function for services and bandwidth is necessary. Currently, the requirements at the NNI for B-ISDN in Korea are based on the network node connection type. Upper/lower layer conformance must be achieved to have the flexibility in new services. It also guarantee the interoperability between the network functions. However, in this paper, network functions and protocol specifications are limited to the 1^st objected network system (the last of ´96) in Korea. Therefore, we present the modular architecture of the B-ISUP which has the characteristics of B-ISDN. We also propose applicable architecture and procedure for B-ISUP and the functions of expandable modular architecture