Patent ID: 7844261
Filing Date: 2010-11-30
Classification: H04M,H04Q

Abstract:
1. A method comprising: detecting in a first entity a service invocation identifying a service that is to be invoked by a second entity; routing a service invocation request from the first entity to the second entity via a third entity, said service invocation request comprising a called party address; mapping, in the third entity, the called party address to a number portability database; and if the called party address is in the number portability database, adding, in the third entity, to the service invocation request an indication that indicates an address range of the called party address, if the called party address is not in the number portability database, the called party address indicates the address range; forwarding the service invocation request, that indicates the address range of the called party address, from the third entity to the second entity, the second entity determining a parameter for the service using the address range indicated in the service invocation request, when invoking the service, determining, by an apparatus in the third entity, that the request is to be forwarded to the second entity on the basis of the protocol used in the request; and performing said mapping if the request is to be forwarded to the second entity.