1、 TIA/EIAINTERIM STANDARDTIA/EIA-41-D Based NetworkEnhancements for User Selective Call Forwarding (USCF)TIA/EIA/IS-838AUGUST 2000TELECOMMUNICATIONS INDUSTRY ASSOCIATIONRepresenting the telecommunications industry inassociation with the Electronic Industries Alliance TIA/EIA/IS-838NOTICETIA/EIA Engin
2、eering Standards and Publications are designed to serve the public interest through eliminatingmisunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement ofproducts, and assisting the purchaser in selecting and obtaining with minimum delay the proper prod
3、uct for hisparticular need. Existence of such Standards and Publications shall not in any respect preclude any member ornonmember of TIA/EIA from manufacturing or selling products not conforming to such Standards and Publications,nor shall the existence of such Standards and Publications preclude th
4、eir voluntary use by those other than TIA/EIAmembers, whether the standard is to be used either domestically or internationally.Standards and Publications are adopted by TIA/EIA in accordance with the American National Standards Institute(ANSI) patent policy. By such action, TIA/EIA does not assume
5、any liability to any patent owner, nor does itassume any obligation whatever to parties adopting the Standard or Publication. TIA/EIA INTERIM STANDARDSTIA/EIA Interim Standards contain information deemed to be of technical value to the industry, and are published atthe request of the originating Com
6、mittee without necessarily following the rigorous public review and resolution ofcomments which is a procedural part of the development of a TIA/EIA Standard.TIA/EIA Interim Standards should be reviewed on an annual basis by the formulating Committee and a decisionmade on whether to proceed to devel
7、op a TIA/EIA Standard on this subject. TIA/EIA Interim Standards must becancelled by the Committee and removed from the TIA/EIA Standards Catalog before the end of their third year ofexistence.Publication of this TIA/EIA Interim Standard for trial use and comment has been approved by theTelecommunic
8、ations Industry Association. Distribution of this TIA/EIA Interim Standard for comment shall notcontinue beyond 36 months from the date of publication. It is expected that following this 36 month period, thisTIA/EIA Interim Standard, revised as necessary, will be submitted to the American National S
9、tandards Institute forapproval as an American National Standard. Suggestions for revision should be directed to: Standards Telecommunications Industry Association;1997.ASSUMPTIONSThe following items are basic understandings used during the development of thisdocument:a. USCF shall permit authorized
10、subscribers to redirect incoming calls to:- the subscribers network based voice mail box.- a network registered USCF DN.- one of a selection of termination addresses which are stored in themobile station.b. USCF shall permit authorized subscribers to identify the redirectiondestination of incoming c
11、alls, independent of authorization for other callforwarding features (e.g., Call Forwarding Default CFD, Call ForwardingBusy CFB and Call forwarding No Answer CFNA).c. USCF shall not permit identifying special access numbers as the redirectiondestination for incoming calls (e.g., Emergency Services
12、e.g., 9-1-1,Operator Services e.g., 0+, Service Codes e.g., N-1-1, or to thesubscribers MDN).d. The network shall reject a request for USCF diversion to an MS-providednumber if an MS-provided number does not accompany that request.e. The network shall use a USCF subscriber identified number as thede
13、stination for USCF diversion if that number accompanies an authorizedrequest for USCF diversion to an MS-provided number.f. USCF subscribers authorized for Variable Registration may register anetwork registered USCF DN via feature code (e.g., *FC + # + terminationaddress + SEND ). A second or subseq
14、uent registration shall overwrite theprevious network registered USCF DN.g. Requests for USCF diversion to an MS-provided number may need to beauthenticated (e.g., by a unique challenge).h. If digits are sent to the network by an MS when the MS is instructed by theuser to invoke a form of USCF, the
15、only digits sent are a prestored digitstring associated to the form of USCF being invoked; this includes adiversion number for USCF diversion to an MS-provided number. Thecontents of the MSs buffers are not sent or modified.v ForewordTIA/EIA/IS-8381234567891011121314151617181920212223242526272829303
16、13233343536373839404142434445464748495051525354555657585960i. The USCF feature is applicable to all supporting 3G (or later) mobilestations and air interfaces. The applicability of USCF invocation to earlieror other non-compatible air-interfaces is not addressed.j. The mobile station shall not offer
17、 USCF as an option to the user unless theSystem to which the MS is registered supports USCF. Additionally, themobile station shall not offer USCF as an option when alerting an idlesubscriber unless the air interface currently in use supports the signalingneeded for USCF invocation for incoming calls
18、 to idle subscribers.k. A serving network notifies served MSs that it supports USCF so that MSscan determine when USCF may be offered as an option to the subscriber.EDITORIAL KEYa. ANSI-41-D, ANSI-124-B or ANSI-664-A totally new sections are identifiedvia text with right hand margin “diffmarks“, as:
19、A totally new sections text.b. ANSI-41-D, ANSI-124-B or ANSI-664-A new enhanced text is identifiedvia text with “under-score“ lines and right hand margin “diffmarks“, as:. . existing text new enhanced text existing text. . .c. ANSI-41-D, ANSI-124-B or ANSI-664-A deleted existing text is identifiedvi
20、a text with “strike-through“ lines and right hand margin “diffmarks“, as:. . existing text deleted text existing text . .d. ANSI-41-D, ANSI-124-B or ANSI-664-A new enhanced text is identifiedvia text with “double under-score“ lines and right hand margin “diffmarks“when another standard modifies the
21、same section, as:. . existing text new enhanced text other standards text existing text. . .Foreword viTIA/EIA/IS-838123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960REVISION HISTORYRevision Date Remarks1.0 July, 2000 Initial publication.
22、vii Revision HistoryTIA/EIA/IS-8381234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859601. INTRODUCTION1.1 OBJECTIVEThis Interim Standard (IS) presents Stage-1 (new chapter TIA/EIA-664-B), Stage-2(TIA/EIA-41.3-D enhancements), and Stage-3 (TIA
23、/EIA-41.5-D and TIA/EIA-41.6-Denhancements) recommendations for supporting the User Selective Call Forwarding(USCF) feature use in the Wireless Radiotelephone Service.1.2 SCOPEThis document specifies the wireless intersystem network operation enhancementsrequired for supporting roaming subscribers w
24、ith the User Selective Call Forwarding(USCF) feature.1.3 ORGANIZATIONThis document is organized as per TIA/EIA-41-D and TIA/EIA-664-A.2. REFERENCES2.1 Normative ReferencesTIA/EIA: ANSI/TIA/EIA-41-D Cellular Radiotelecommunications IntersystemOperations; Telecommunications Industry Association; Decem
25、ber 1997. ANSI/TIA/EIA-124-B Wireless Radio Telecommunications IntersystemNon-Signaling Data Communication DMH (Data Message Handler);Telecommunications Industry Association; July 1999. TIA/EIA-IS-664 Cellular Features Description TelecommunicationsIndustry Association; January 1996.1 IntroductionTI
26、A/EIA/IS-8381234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859603. TIA/EIA-664-XXX “CELLULAR FEATUREDESCRIPTIONS” MODIFICATIONSThis section provides the Stage-1 feature description for User Selective CallForwarding (USCF) according to the st
27、ructure of TIA/EIA-664.3.1 Definitions(TIA/EIA-664-001-B, page 4)Switch Control Code (SCC)A Switch Control Code consists of a terminating “*” preceded by the one,two, or three digits of a Switch Control Value (as in: SCV*).Switch Control Code String (SCCS)A Switch Control Code String is a digit stri
28、ng consisting of a Switch ControlCode followed by a termination address (as in SCV* + termination address).Switch Control Value (SCV)A Switch Control Value is an integer in the range (0.255) that is used by anMS, either alone or in conjunction with a Termination Address, to controlelements of the op
29、eration of certain MSC-based features.Depending on the details of the air interface in use, an SCV may be sent bythe MS to the network: As a Switch Control Code (constructed from the SCV) sent using the airinterfaces procedures for sending generic digit strings to the network, or Using dedicated air
30、 interface specific protocol elements.In either case, the SCV is always represented as an SCC when sent fromMSC to MSC within the TIA/EIA-41 network.Depending on the details of the air interface in use, an SCV and associatedtermination address may be sent by the MS to the network: As a Switch Contro
31、l Code String (with the SCC portion of the SCCSconstructed from the SCV) sent using the air interfaces procedures forsending generic digit strings to the network, or Using dedicated air interface specific protocol elements.In either case, the SCV and associated termination address are alwaysrepresen
32、ted as an SCCS when sent from MSC to MSC within the TIA/EIA-41network.USCF Stage-1 Feature Description 2 TIA/EIA-664-XXX ModificationsTIA/EIA/IS-838123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960The following table defines the Switch Co
33、ntrol Values used in this Standard:Switch ControlValuesUsage0 Forward the incoming call to a networkregistered destination16 Forward the incoming call to the destinationprovided by the mobile in conjunction withthis code.17 Forward the incoming call to voice mail.18 Apply Answer Hold treatment to th
34、eincoming call (assuming an incoming call isbeing offered to the MS through Alerting orCall Waiting Notification).Table X: Switch Control Value AssignmentsUser Selective Call Forwarding (USCF)See User Selective Call Forwarding.4.2 Call Model(TIA/EIA-664-XXX-B, page 20)The omitted existing text is re
35、tained without modification.TIA/EIA-664-XXX Modifications 3 USCF Stage-1 Feature DescriptionTIA/EIA/IS-838123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960The following subscriber (and other party) actions are defined:A. Address: A subscr
36、iber presses the SEND key with termination addressdigits.C. Conferee: A conferee requests a disconnect.D. Disconnect: The other party (sometimes a calling party) requests adisconnect.E. End: A subscriber presses the END key.F. Feature: A subscriber enters a Feature Code String followed by the SENDke
37、y.G. callinG: The calling party sends one or more DTMF digits.H. Held: The held party requests a disconnect.I. Incoming: An incoming call arrives for a subscriber.N. aNswers: The other party answers.P. Period: A time period expires.S. S end: A subscriber presses the SEND key without digits.T. Third:
38、 The third party requests a disconnect.U. featUre code: A subscriber enters a Feature Code String, a delimiter digit“#,” and a termination address followed by the SEND keyV. addressed scV: The subscriber instructs the MS to send an SCV andassociated termination address, to the network.W. sWitch cont
39、rol: The subscriber instructs the MS to send an SCV to thenetwork.USCF Stage-1 Feature Description 4 TIA/EIA-664-XXX ModificationsTIA/EIA/IS-838123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960Note: the omitted existing text is retained w
40、ithout modification.The following tables summarize the feature interactions in a state-action matrix forthe features in this Standard:1 2 3 4 5 6 7 8 9 10 11Action Idle Alerting 2-way Adding on Holding 2-way 3-way 2-way CW notification 2-way CW Conference adding on Conference 2-way ConferenceAddress
41、 andsendBasic BasicCCCT=3WCCT=3WCCT3WC3WC CW CW CC CC CCConfereedisconnectN/A CC N/A N/A N/A N/A N/A N/A CC CC CCother partyDisconnectN/A Basic Basic N/A N/A 3WC CW CW N/A CC N/AEnd key Basic Basic Basic CT=3WCCT3WCCT3WCCW CW CC CC CCFeature codeand sendBasicFeatureCCBasicCCBasicCCCCWMWNFeatureCCCCW
42、MWNFeat-ureCT3WC3WC CW CW CC CC CCcallinG DTMFdigitsN/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/AHelddisconnectN/A Basic N/A CCCT=3WCCT=3WCN/A N/A CW N/A N/A N/AI ncoming call Basic Basic BasicCWCCCT=3WCCT=3WC3WC CW CW CC CC CCother partyaNswersN/A N/A Basic N/A CT=3WC3WC N/A N/A N/A CC CCPeriod N/A B
43、asic Basic N/A N/A N/A N/A N/A N/A N/A N/ASend and nodigitsBasic BasicCCBasicCCCT=3WCCT=3WCCT3WC3WC CW CW CC CC CCThirddisconnectN/A N/A N/A N/A CT=3WC3WC CW N/A N/A N/A N/AfeatUre code,terminationaddress andsendBasicCCBasicCCCT=3WCCCCT=3WCCCCT3WC3WC CW CW CC CC CCaddressedscVN/A USCF N/A N/A N/A N/
44、A USCF N/A N/A N/A N/AsWitch control N/A USCF N/A N/A N/A N/A USCF N/A N/A N/A N/ATable 3: State-Action Matrix to Locate Feature Interactions(Part 1 of 2)TIA/EIA-664-XXX Modifications 5 USCF Stage-1 Feature DescriptionTIA/EIA/IS-83812345678910111213141516171819202122232425262728293031323334353637383
45、9404142434445464748495051525354555657585960X.1 User Selective Call Forwarding (USCF)(new Chapter for TIA/EIA-664-XXX-B)User Selective Call Forwarding (USCF) provides a called subscriber the capability toselectively redirect unanswered, incoming calls to an alternate destination (e.g., to avoice mail
46、 system, to a network registered USCF DN, or to a DN stored in theMobile Station (MS). USCF is applicable both to calls being offered to asubscriber via alerting and to calls being offered to a subscriber via Call WaitingNotification.USCF subscribers may base a decision to invoke USCF on any conside
47、ration theydeem appropriate (e.g., the time of day, their location, the activities in which they areengaged, etc.). USCF called subscribers also authorized for calling party informationpresentation features (e.g., Calling Number Identification Presentation CNIP,Calling Name Presentation CNAP, etc.)
48、may redirect incoming calls to differentDNs based on the received calling partys identity.USCF subscribers are capable of redirecting incoming calls to an alternate destinationDN independent of their authorization status for other redirection features (e.g., CallForwarding Busy (CFB), Call Forwardin
49、g Default (CFD), Call Forwarding NoAnswer (CFNA), etc.).Applicability to Telecommunications ServicesUSCF is applicable to switched, circuit mode telecommunications services.X.1.1 Normal Procedures With Successful OutcomeAuthorizationUSCF may be generally available or may be provided after pre-arrangement with theservice provider. The authorization may have the following subscription options:Table 1.1a USCF Subscription OptionsSu
