Technique for Service Domain Selection

A method of performing a service domain selection in a communications network having a default service domain and at least one alternative service domain, wherein switching to the alternative service domain involves invocation of a supplementary service that is provided as a supplement to a specific, basic service type, and wherein for at least one of an originating side and a terminating side of a service request, a basic service type underlying the service request is linked with a subscription to the supplementary service, the method comprising the steps of:

• receiving a service domain selection query in context with the invocation of the supplementary service of service domain switching;
• determine service domain selection information in response to receipt of the service domain selection query, the service domain selection information relating to the treatment of the service request;
• and
• sending the determined service domain selection information for enabling a treatment of the service request.

An apparatus for performing a service domain selection in a communications network having a default service domain and at least one alternative service domain, wherein a switching to the alternative service domain involves the invocation of a supplementary service that is provided as a supplement to a basic service, the apparatus comprising:

• an identifying component adapted to identify a basic service type associated with a service request;
• a determination component adapted to determine if for at least one of an originating side and a terminating side of the service request the identified basic service type is linked with a subscription to the supplementary service of service domain switching;
• and
• an invocation component adapted to invocate the supplementary service of service domain switching if a linking can be determined.

An apparatus for performing a service domain selection in a communications network having a default service domain and at least one alternative service domain wherein a switching to the alternative service domain involves an invocation of a supplementary service that is provided as a supplement to a basic service type, and for at least one of an originating side and a terminating side of a service request a basic service type underlying the service request is linked with a subscription to the supplementary service, the apparatus comprising:

• a reception interface for receiving a service domain selection query in context with the invocation of the supplementary service of service domain switching;
• a processor for determining service domain selection information in response to receipt of the service domain selection query, the service domain selection information relating to the treatment of the service request;
• and
• a transmission interface for sending the determined service selection information for enabling a treatment of the service request.