Yellow Page/ White Page Services: Caller speaks with a Callcenter agent to be connected to a person he knows only the name/ location of the desired destination party. The agent finds the right person, and transfers the call to an IVR menu. The IVR then reads out the phonenumber of the destination. The caller can say "SMS" to receive an SMS containing the destinee's name, adress and phonenumber. He can say "connect" to be connected to that party. Using SS7 INAP signalling, we execute an explicit call transfer in the carrier's public network in order to release the IVR ports.