Call clearing to the UE is performed as described in clause 188.8.131.52
Call clearing to the network side is performed as described in clause 184.108.40.206
shows the network model for a MSC server initiated clearing of an established mobile call. The "squared"
line represents the call control signalling. The "dotted"
line represents the bearer control signalling (not applicable in A/Gb mode for the A-interface) and the bearer. The MSC server seizes one context with two bearer terminations in the MGW. Bearer termination T1 is used for the bearer towards RNC/BSC and bearer termination T2 is used for the bearer towards succeeding MGW.
shows the message sequence example for the MSC server initiated clearing of an established mobile call. In the example the MSC server initiates call clearing of the network side and the access side. After the call clearing towards the UE and the release of the radio resource have been completed the MSC server requests release of the access side bearer termination. Once the preceding/succeeding node has indicated that call clearing has been completed, the MSC server requests the MGW to release the network side bearer termination.