| 摘要 |
A system of managing in MSC/VLR supplementary service procedures directed towards HLR, comprises the following steps: MSC/VLR is aware only of those operations that shall be terminated in MSC/VLR; when receiving a forward direction message within an operation from an MS, a check is made with regard to the operation intended; when the operation is known to MSC/VLR, the procedure is terminated in MSC/VLR; when the operation is not known to MSC/VLR, MSC/VLR makes no further check of the invoke component in the received forward message, but forwards the message to HLR in the condition in which it was received in MSC/VLR. (Figure 3)
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