A method, telecommunication system and a network node for controlling processing of a connection, particularly when information necessary for the controlling is available at an early stage. At least one processing instance is formed for the connection to control event processing of the control. The processing instance is also associated with a functional connection to at least one control function of the telecommunication system, the control function giving instructions related to processing the connection in response to requesting the instructions. In the processing instance are defined at least one interactive event of a delayed request, in which interactive event instructions from the processing instance are requested and, after requesting, processing the connection is continued, and at least one interactive event of a delayed response, in which interactive event the instructions requested in the interactive event of the delayed request from the control function are processed.

 
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> Method and apparatus for routing calls by proxy using virtual transaction servers in a multi-tennant communication center

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