d virtual leased line services for High Speed Data Com- 32.9.3 Packaging structure munication (HSDC). The AXE packaging structure has been developed to meet the 32.10.3 International gateways requirements of a modern switching system. From both mechanical and electrical viewpoint, the packaging offers a very high degree of International telephony involves many special demands: high traffic flexibility. load day and night, demands for secure charging and accounting, The basic unit is the magazine. Each magazine corresponds to a demands for sophisticated maintenance functions, advanced oper- function of the AXE switching system. At the factory the magazines ator services, and a full range of national and international signall- are fitted with their printed boards assemblies. Then they are tested ing systems. AXE offers a complete international exchange system, as functional units, either as single magazines or as complete including large trunk switching capacity, a powerful central proces- cabinets. Accordingly, a complete switch may be pretested in the sor, all international signalling systems, advanced charging and factory thus reducing on-site activities to a minimum. accounting functions, and an operator system. 32.10.4 The operator system tion as it meets the highest transaction rate and short response time requirements. The operator system contains functions for operator handling of As the AXE can be configured both as Service Switching Points manually assisted calls. It can provide services for national and (SSPs) and as Service Control Points (SCPs), the possibility to make international switching centres and also for directory inquiry service combined Service Switching and Control Points (SSCPs) also centres, message service centres, alarm collection centres, etc. An exists. This approach allows for the service execution to migrate operator position can be used for all types of traffic, thus allowing from a central service control point (SCP) into the local network for an integration of operator assisted s