| 摘要 |
An intelligent peripheral (IP) (3) in a telecommunications network is operat ed under the control of a service control point (SCP) (5). Control messages conforming to a standard control protocol, which may be INAP - the Intellige nt Network Application Protocol, are passed from the SCP to the IP which then executes a predetermined function. Some of the control messages include a field identifying the messages as relating to an additional function not provided for in the standard protocol. In response to such a message, the IP executes the relevant additional function instead of one of the standard functions.
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