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ETSI TS 122 093
M00003263
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ETSI TS 122 093 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Completion of Calls to Busy Subscriber (CCBS); Service description, Stage 1 (3GPP TS 22.093 version 13.0.0 Release 13)
standard by European Telecommunications Standards Institute, 01/01/2016
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Full Description
The present document specifies the stage 1 description of Completion of Calls to Busy Subscriber (CCBS) from the subscriber's and user's points of view; in particular:the procedures for normal operation with successful outcome;the action to be taken in exceptional circumstances;the interaction with other supplementary services;The present document does not deal with the Man-Machine Interface (MMI) requirements, but makes reference to the appropriate specifications.The charging principles applied to CCBS are outside of the scope of this specifcation.
Any interactions with other networks not dealt with in the present document are outside the scope of the present document.