name: NO
full_form: Network Operator
context: Figure A.9 shows the interception of call forwarding on no reply. The mobile that activated call forwarding on no reply (B) is the target for interception. In this case interception will be performed at the 3G MSC where B resides, where the no reply condition is detected and the call is forwarded. Initially, the interception is similar to the interception of a basic mobile terminated circuit switched speech of data call. On no reply time-out, the interception will continue on the forwarded call to C. Figure A.9: Interception of call forwarding on no reply In figure A.9 the release of the stublines is done after the forwarded call is released by A or C. It is a national option not to support interception of forwarded calls. In that case, the release of the stublines is done after the call is forwarded and B is no longer involved.
description: A Network Operator (NO) manages and maintains telecommunications networks. They ensure network functionality, provide services to users, implement security measures like lawful interception, and enforce 3GPP specifications.
explanation: The description clearly defines the role of a Network Operator in managing and securing telecommunications networks, aligning with the standard definition of this entity type.
section_title: A.5.5	Call forwarding on no reply
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