FIELD: context invocation in first network for telephone call transfer and/or transaction through first and second network.
SUBSTANCE: procedure is started with installation of applied protocol, for instance H.323, H.248, or communication session initiation protocol in first network using transfer of service signals or context specified by default. Applied protocol message conveyed from second network serves as basis for identifying information about functional capabilities which is used for context invocation. In this way functional capabilities can be coordinated in advance and context can be invoked, for instance, in the form of secondary context both for telephone calls and/or transactions coming from mobile device, and for telephone calls and/or transactions terminating in mobile device. So, proposed method and system can dispense with backup protocol for transmitting service signals associated with functional capabilities to second network.
EFFECT: reduced load associated with service signal transfer.
22 cl, 4 dwg
