Patent ID: 8374589

Claim:
A method of controlling supplementary subscriber services in first and second operatively connected, overlaid telecommunications networks, wherein supplementary subscriber services available to a subscriber in said first telecommunications network are executed in said second telecommunications network, said supplementary subscriber services being controlled by said subscriber from said first telecommunications network, said first telecommunications network is provided with a supplementary subscriber services handling indicator that indicates in which one of said first and second telecommunications networks a supplementary subscriber service of a subscriber is to be executed, the method comprising the steps of: storing said supplementary subscriber services handling indicator as a data element in a register of said first telecommunications network; at the receipt of a supplementary subscriber services control message of a subscriber in said first telecommunications network, said stored supplementary subscriber services handling indicator being checked to determine in which one of said first and second telecommunications networks said supplementary subscriber services control message has to be processed; executing in a data management server in the second telecommunications network the supplementary subscriber services control message forwarded by said first telecommunications network; and configuring the data management server to forward to said first telecommunications network a supplementary subscriber services control message relating to a supplementary subscriber service not envisaged to be executed by said second telecommunications network.