guring the UPDR to the circuit groups/routes, the control plane is able to assign the call to the right MGW. The UPDR values can be configured in the incoming circuit group with the commands of User Plane Detailed Planning the circuit group handling and in the outgoing routes using the commands of the route handling, but only if the signalling is BICC or SIP/SIP-T. Thus the following configurations are performed: configuring the UPDR to the incoming circuit; configuring the UPDR to the outgoing route; configuring the UPD for RANAP signalling in the RNC. 4.6 User Plane Detailed Planning 4.6.1 Configuring Analyses in the MSS MSS functionality affects only the end-of-selection analysis, attribute analyses and digit analysis. The following examples show the capabilities offered by these analyses when configuring the control plane routing in the MSS. Digits Analysis The linkage between the control and the user plane layers is handled via the UPDR parameter, which can be set in the route resulting from the digit analysis. The planners can attach the UPDR parameter to route or circuit group level parameters before using it in user plane analysis. The succeeding UPDR (SUPDR) is attached to the outgoing route. The preceding UPDR (PUPDR) is attached to the incoming circuit group. The user plane analysis using P/SUPDR, which is not attached to the control plane level, will not be executed properly or not at all. The PUPDR is one of the attributes of the following subanalysis: preceding UPD determination (PUPD); succeeding BNC characteristic determination (SBNC); CMN determination (CMN); succeeding UPD determination (SUPD); succeeding action indicator determination (SAI); interconnecting BNC characteristics determination (ICBNC). The SUPDR is one of the attributes of the following subanalysis: succeeding BNC characteristics determination (SBNC); CMN determination (CMN); succeeding UPD determination (SUPD); succeeding action indicator determination (SAI); interconnecting BNC characteristics determination (ICBNC). EOS Analysis