An object oriented implementation of a software simulator for B-ISDN signalling protocols

The paper gives a general description of a software simulator designed to study the impact, in terms of protocol signalling, that multimedia services will have on B-ISDN. Object oriented techniques have been adopted to build both the simulator and the protocols to be tested. The protocols developed are able to cater for the multiparty, multimedia, multiservice aspects of the B-ISDN at the user access to the network (UNI-user network interface), and at the internal network interfaces (NNI-network node interface). As the simulator implements a representation of physical network entities, such as bearer channels and combiners/converters the actions of the protocols can be visualized and tested. The simulator can also undertake performance measurements on the operation of the protocols. The work presented in this paper is based on the results of the RACE MAGIC project