ImageVerifierCode 换一换
格式:PDF , 页数:38 ,大小:199.58KB ,
资源ID:802605      下载积分:10000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-802605.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ITU-T Q 951 4-1993 STAGE 3 DESCRIPTION FOR NUMBER IDENTIFICATION SUPPLEMENTARY SERVICES USING DSS 1 - Clause 4 - Calling Line Identification Restriction (CLIR)《第三阶段数字识别补充业务使用决策支持系统.pdf)为本站会员(王申宇)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

ITU-T Q 951 4-1993 STAGE 3 DESCRIPTION FOR NUMBER IDENTIFICATION SUPPLEMENTARY SERVICES USING DSS 1 - Clause 4 - Calling Line Identification Restriction (CLIR)《第三阶段数字识别补充业务使用决策支持系统.pdf

1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 1 TELECOMMUNICATION (03/93)STANDARDIZATION SECTOROF ITU$)4!,G0G035“3#2)“%2G0G03).!,).G0G03934%-G0G0.O G0G0 34!%G0G0 G0G0$%3#2)04)/.G0G0 national significant number is an ISDN number structured as specified inRecommendation E.164.A subscriber number is an

2、ISDN number structured as specified in Recommendation E.164.A default number is an agreed number between the user at the calling side and the network provider.A special arrangement is an arrangement between a customer and a public network operator whereby customersupplied calling numbers are not scr

3、eened by the public ISDN.CLIP Calling Line Identification PresentationCLIR Calling Line Identification Restriction2 Recommendation Q.951 (03/93)3.2.3 Qualification on the applicability to telecommunication servicesSee Recommendation I.251.3.3.2.4 State definitionsNo specific state definitions are re

4、quired.3.3 Operational requirements3.3.1 Provision/withdrawalSee Recommendation I.251.3.NOTE Annex A contains some additional procedures to support the two Calling party number information elementsdelivery option. This is a network option.3.3.2 Requirements on the originating network sideAll informa

5、tion pertaining to CLIP, shall be inserted in the SETUP message sent as part of the basic call proceduresaccording to 5/Q.931.In the case where no information is provided by the calling user (as part of the basic call procedures) the network shallprovide the default number associated with the user a

6、ccess (in which the call was generated) in the originating localexchange.When the calling party information is provided by the user, the network can only verify that the number is within therange allocated to that user.Where a special arrangement exists with the calling user, no screening of the cal

7、ling number they supplied, shall beperformed.3.3.3 Requirements in the networkThis subclause is not applicable to DSS 1.3.3.4 Requirements on the destination network sideSee 3.5.2.3.3.4 Coding requirementsAll information pertaining to CLIP is inserted in the SETUP message. 4.5.10/Q.931 and 4.5.11/Q.

8、931 give the codingfor the Calling party number and Calling party sub-address information elements which are required to support thisservice. The purpose of the Calling party number information element is to identify the origin of a call. The purpose ofthe Calling party sub-address information eleme

9、nt is to identify a sub-address associated with the origin of the call.3.5 Signalling requirements3.5.1 Activation/deactivation/registrationNot applicable.3.5.2 Invocation and operation3.5.2.1 Actions at the originating local exchange3.5.2.1.1 Normal operation3.5.2.1.1.1 Actions at the originating u

10、serThese procedures shall be provided as part of the basic service and the calling user need not have subscribed to the CLIPsupplementary service.Recommendation Q.951 (03/93) 3The numbering plan identification, to be indicated with the Calling party number information element, sent by the callinguse

11、r, shall be either “ISDN/telephony numbering plan” (see Recommendation E.164) or “unknown”.NOTE Either coding may be used and the treatment of both by the network is identical.Where the calling number included by the calling user is complete the type of number to be indicated within the Callingparty

12、 number information element, sent by the calling user, shall be one of the following:“Subscriber number” In the case where the complete subscriber number is sent.“National number” In the case where the complete national number is sent.“International number” In the case where the complete internation

13、al number is sent.Where a partial calling number is included by the calling user (e.g., to indicate digits specific to the Direct-Dialling-In orthe Multiple Subscriber Number supplementary services) the user shall set the type of number to be indicated within theCalling party number information elem

14、ent to “unknown”.3.5.2.1.1.2 Actions at the originating local exchange if a special arrangement does not applyThese procedures shall be provided as part of the basic service and the calling user need not have subscribed to the CLIPsupplementary service.When a SETUP message is received from the calli

15、ng user, the network shall check to see if the Calling party number andCalling party sub-address information elements are included.If the Calling party number information element is received with a coding of the numbering plan identification fieldother than “ISDN/telephony numbering plan” (see Recom

16、mendation E.164) or “unknown”, then the network shalldiscard the Calling party number information element and process the call as if that information was not received.The network shall set the value of the screening indicator based on the outcome of the screening of the calling number.The network sh

17、all disregard any value of the screening indicator, if received from the calling user.If the Calling party number information element is included, the network shall perform the screening function.NOTE 1 Some networks may accept a full ISDN number in a Calling party number information element with th

18、eaddition of a prefix or escape digits to the number digits field and the type of number field set to “unknown”.If the calling number received from the calling user is determined to be correct, the network shall set the screeningindicator to “user-provided, verified and passed”.If the screening func

19、tion fails the network shall note that the screening is failed and shall use a default number associatedwith the calling user. The network shall set the screening indicator to “network provided”.If the SETUP message does not contain the Calling party number information element the network shall use

20、a defaultnumber associated with the calling user. The network shall set the screening indicator to “network provided”.In the case where the calling user provides only partial calling number information and the number is a valid digitsequence for the user access arrangement, the network shall complet

21、e the number as appropriate. The network shall setthe screening indicator to “user-provided, verified and passed”.NOTE 2 In some cases the network cannot guarantee that the completed number identifies an end user.The information determined by the procedures above, shall be forwarded to the destinati

22、on local exchange, inassociation with the basic call request.The presentation indicator, as determined by the procedures of the CLIR supplementary service (see clause 4), shall beforwarded to the destination local exchange, in association with the basic call request.If the Calling party sub-address

23、information element is available, it shall be passed transparently through the network.The actions at the originating local exchange when special arrangement does not apply are summarized in Table 3-1.4 Recommendation Q.951 (03/93)TABLE 3-1/Q.951Information provided by the calling user and by the ne

24、tworkwhen special arrangement does not apply3.5.2.1.1.3 Actions at the originating local exchange if a special arrangement appliesThese procedures shall be provided as part of the basic service and the calling user need not have subscribed to the CLIPsupplementary service.When a SETUP message is rec

25、eived from the calling user, the network shall check to see if the Calling party number andCalling party sub-address information elements are included.If the Calling party number information element is received with a coding of the numbering plan identification fieldother than “ISDN/telephony number

26、ing plan” (see Recommendation E.164) or “unknown”, then the network shalldiscard the Calling party number information element and process the call as if that information element was notreceived.Information provided by the calling user Information provided by the network to the called userCalling num

27、berreceived from thecalling user (octet 4)Type of number(octet 3)Calling numberforwarded (if CLIR isnot activated) (octet 4)Screening indicatorforwarded (octet 3a)Type of numberforwarded (octet 3)No calling partynumber informationelement is provided bythe calling userDefault number storedat the netw

28、ork sidesufficient for returningthe callNetwork provided “International number”or “national number”(Notes 1, 7)Valid part of thenumber not sufficientfor returning the call(Note 2)“Unknown” Completion of thenumber(Note 3)User-provided verifiedand passed (Note 4)“International number”or “national numb

29、er”(Notes 1, 7)Correct completecalling party number(Note 5)“Subscriber number” or“national number” or“international number”Complete calling partynumberUser-provided verifiedand passed“International number”or “national number”(Notes 1, 7)Incorrect number(Note 6)Any type of number Default number store

30、dat the network sidesufficient for returningthe callNetwork-provided “International number”or “national number”(Notes 1, 7)NOTES1 A national number shall be converted to an international number at some point in the public network path where thedestination is in a different country.2 This assumes tha

31、t the users equipment provides that part of the number pertaining to its own (private) domain. This may bemultiple subscriber number digits provided by a terminal equipment or an extension line number provided by a private ISDN. Thenetwork shall interpret the number digits and check if it is a valid

32、 digit sequence according to the agreements existing between thecalling user and the network provider.3 Completion means that the remaining part of the ISDN number associated with the appropriate access is added to the userprovided part of the number.4 The term “verified” implies matching the user p

33、rovided number or part of this number with the range(s) of numbers stored atthe network side and it implies at least a valid format of user provided number information.5 The term “correct” implies, from the network point of view, matching the subscriber number provided by the user with one ofthe num

34、bers in the set of numbers stored at the network side.6 The number provided by the user is discarded.7 As a network option the type of number forwarded to the called user may be coded “unknown” when a prefix is added to thenumber, in which case the number is organized according to the network dialli

35、ng plan, i.e. prefixes or the absence of a prefix, shallbe used to distinguish international numbers and national numbers from each other.Recommendation Q.951 (03/93) 5If the Calling party number information element is received with the coding of the type of number field other than“national number”

36、or “international number”, then the network shall discard the Calling party number informationelement and process the call as if that information element was not received.The network shall disregard any value of the screening indicator, if received from the calling user.If the SETUP message does not

37、 contain the Calling party number information element the network shall use a defaultnumber associated with the calling user. The network shall set the screening indicator to “network provided”.If the Calling party number information element is included the network shall set the screening indicator

38、to “user-provided, not screened”.NOTE For the above condition, the procedures of basic call will provide for another calling number to be transportedthrough the network. This other calling number will contain the default number, with an associated screening indicator set to “networkprovided”.The inf

39、ormation determined by the procedures above, shall be forwarded to the destination local exchange, inassociation with the basic call request.The presentation indicator, as determined by the procedures of the CLIR supplementary service (see clause 4) shall beforwarded to the destination local exchang

40、e, in association with the basic call request.If the Calling party sub-address information element is available, it shall be passed transparently through the network.The actions at the originating local exchange when special arrangement applies are summarized in Table 3-2.TABLE 3-2/Q.951Information

41、provided by the calling user and by the networkwhen special arrangement applies3.5.2.1.2 Exceptional proceduresNot applicable.Information provided by the calling user Information provided by the network to the called userCalling party numberreceived from thecalling user (octet 4)Type of number(octet

42、 3)Calling party numberforwarded (if CLIR isnot activated) (octet 4)Screening indicatorforwarded (octet 3a)Type of numberforwarded (octet 3)No calling partynumber informationelement is provided bythe calling userDefault number storedat the network sidesufficient for returningthe callNetwork provided

43、 “International number”or “national number”(Notes 1, 2)Any digit sequenceconforming to E.164“National number” or“international number”Number provided bythe user (Note 1)User-provided, notscreened“International number”or “national number”(Notes 1, 2)NOTES1 A national number shall be converted to an i

44、nternational number at some point in the public network path where thedestination is in a different country.2 As a network option the type of number forwarded to the called user may be coded “unknown” when a prefix is added to thenumber, in which case the number is organized according to the network

45、 dialling plan, i.e. prefixes or the absence of prefixes, shallbe used to distinguish international numbers and national numbers from each other.6 Recommendation Q.951 (03/93)3.5.2.2 Actions at the transit exchangeThis subclause is not applicable to DSS 1.3.5.2.3 Actions at the destination local exc

46、hange3.5.2.3.1 Normal operationWhen the network sends a SETUP message to the called user and if the called user is provided with the CLIPsupplementary service, the network shall check to see if the calling number is available.If the calling number is available and presentation is allowed according t

47、o the presentation indicator supplied togetherwith the calling number, the network shall include the Calling party number information element in the SETUP messagesent to the called user. If provided, the network shall also include the Calling party sub-address information element inthe SETUP message

48、. The presentation and screening indicators associated with the calling number, and the calling sub-address, received at the destination exchange, shall be passed transparently to the called user.The numbering plan identification field shall be coded either “ISDN/telephony numbering plan” (seeRecomm

49、endation E.164)” or “unknown”.If presentation is not allowed according to the presentation indicator supplied together with the calling number, thenetwork shall include the Calling party number information element in the SETUP message sent to the called user. Thepresentation indicator in the Calling party number information element shall indicate “presentation restricted”. Thenetwork shall encode the screening indicator, numbering plan identification and the type of number according to one ofthe following options:i) The screening indicator shall indicate “n

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1