ANSI ATIS 1000642-2014 Integrated Services Digital Network (ISDN) C Call Deflection Supplementary Service.pdf
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1、 ATIS-1000642.2014 Integrated Services Digital Network (ISDN) Call Deflection Supplementary Service AMERICAN NATIONAL STANDARD FOR TELECOMMUNICATIONS As a leading technology and solutions development organization, ATIS brings together the top global ICT companies to advance the industrys most-pressi
2、ng business priorities. Through ATIS committees and forums, nearly 200 companies address cloud services, device solutions, emergency services, M2M communications, cyber security, ehealth, network evolution, quality of service, billing support, operations, and more. These priorities follow a fast-tra
3、ck development lifecycle from design and innovation through solutions that include standards, specifications, requirements, business use cases, software toolkits, and interoperability testing. ATIS is accredited by the American National Standards Institute (ANSI). ATIS is the North American Organiza
4、tional Partner for the 3rd Generation Partnership Project (3GPP), a founding Partner of oneM2M, a member and major U.S. contributor to the International Telecommunication Union (ITU) Radio and Telecommunications sectors, and a member of the Inter-American Telecommunication Commission (CITEL). For mo
5、re information, visit . AMERICAN NATIONAL STANDARD Approval of an American National Standard requires review by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI
6、Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be
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8、 to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name
9、 of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American
10、 National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Notice of Disclaimer 3.1
11、-kHz audio; 64-kbit/s unrestricted digital information; multi-rate (n 64 kbit/s). 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions indicated were
12、 valid. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. 1 ATIS-1000642.2014 ATIS-1000113.2005(R2010), Telecommunications Sign
13、aling system number 7 (SS7) Integrated services digital network (ISDN) user part1ATIS-1000607.2000(R2009), Telecommunications Integrated services digital network (ISDN) Layer 3 signaling specification for circuit-switched bearer service for digital subscriber signaling system no. 1 (DSS1)2ATIS-10006
14、10.1998(R2013), Telecommunications Digital subscriber signaling system no. 1 (DSS1) Generic procedures for the control of ISDN supplementary services3ATIS-1000620.1991(R2012), Telecommunications Integrated services digital network (ISDN) Circuit mode bearer service category description4ATIS-1000625.
15、1993(R2013), Telecommunications Integrated services digital network (ISDN) Calling line identification presentation and restriction supplementary services5ITU-T Recommendation Q.71, ISDN circuit mode switched bearer services6ITU-T Recommendation Q.932, Generic procedures for the control of ISDN supp
16、lementary services2ITU-T Recommendation Q.950, Digital subscriber signaling system no. 1 (DSS1) Supplementary services protocol, structure and general principles2ITU-T Recommendation Q.952, Stage 3 service description for call offering supplementary services Diversion supplementary services23 Defini
17、tions progress indicator information, if available; calling party number information, if available; called party number information; redirecting number information, if one redirecting number is available, or original redirecting number information, if two redirecting numbers are available; sequentia
18、l diversion information on the number of times the call has been sequentially diverted; calling party subaddress, if available; original redirecting subaddress, if available. 5 ATIS-1000642.2014 This retained information, as well as parameter values signaled in a deflection request, is used to initi
19、ate call setup towards the deflected-to user. Information on an offered call is retained by the network for as long as the call can be deflected. When a circuit-mode call is offered, the served user has the option of requesting the network to redirect the call to another user. If the served user cho
20、oses to deflect the call, the served user provides a deflected-to number in a deflection request to the network. The deflecting user may also include routing information that identifies an interexchange carrier or a network-specific facility to be used in setting up the call to the identified deflec
21、ted-to user. The deflecting user may include a presentation status in the deflection request to indicate whether the deflected-to user may receive the deflecting users number. This indication shall override any default subscriptions that are in place to present or restrict presentation of the deflec
22、ting users number to the deflected-to user. The deflecting user may also indicate whether the call is to be locally cleared or is to remain in the current state pending other actions; if this indication is absent, the call will remain in the current call state. The deflecting user may include other
23、information received when the call was offered, for example, useruser information. If the deflecting user is an NT2, the call may have been redirected within the NT2. In this case, the NT2 may also include a redirection counter and information about the last redirecting user in the deflection reques
24、t. If the deflecting user is subscribed to “Call Deflection After Answer”, the served user may choose to deflect the call after answering it. The deflecting user may include the same information in the deflection request as defined for deflection before answer. When the network receives the deflecti
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