edicated for certain interfaces. For example: 300-699 MGW CGR 700-899 BICC circuit groups 900-999 Interconnect to POI Signalling link set name. Name the signalling link set that could be linked to the destination signalling point to where the link is set up. Name of subdestination. The subdestination is used for routing a call inside the network. The most informative way of naming is according to the name of the circuit group used for the call. This enables easier troubleshooting during network operation. Naming of destination. The destination name should identify the switch to which the call is to be routed or the network and POI for the interconnect calls. The destination is determined during digit analysis or, in case of incomplete analysis, the next switch where the call would be further analysed. Network Architecture The detailed design documents include a set of diagrams showing the architecture and network topology at a more detailed level. The relationship between the switching nodes, the used interfaces and their main parameters should be drawn. Detailed network diagrams should contain the following information: Trunking plan: interswitch connections (network internal) Network interconnects: points of interconnections with external networks Signalling network plan Network service platforms connecting plan Synchronisation plan Routing Plan A routing plan has to be created for all new network elements and updates to existing network elements (Figure 4.4). Table 4.4 shows an example of how to create a routing table. Direct connection serves as the default route while the connections via other MSCs serve as alternative routes. If the network has a transit layer and transits are implemented in mated pair configurations, the traffic may be load-shared between the transits in a mated pair. Detailed Signalling Plan A detailed signalling plan contains information of the signalling points, point codes, links, link set and routes and route sets for the entire network. This serves as the basis for signalling definit