1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.2971 F (1 2/1999) SERIES Q: SWITCHING AND SIGNALLING Broadband ISDN - B-ISDN application protocols for access signalling Digital Subscriber Signalling System No. 2 - User-network interface layer 3 specifica
2、tion for poi nt-to-m u Iti poi nt cal Ikon nection control : Abstract Test Suite (ATS) and partial Protocol Implementation extra Information for Testing (PIXIT) proforma for the network ITU-T Recommendation Q.2971 F (Formerly CCITT Recommendation) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALL
3、ING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM R1 SPECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES I
4、NTERWORIUNG OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUBLIC LAND MOBILE NETWORK INTERWORIUNG WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK BROADBAND ISDN INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING CLAUSES APPLICABLE TO ITU
5、-T STANDARD SYSTEMS SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 General aspects Signalling ATM adaptation layer (SAAL) Signalling network protocols Common aspects of B-ISDN application protocols for access signalling and network signalling and interworking B-ISDN atitilication tirotocols for
6、the network signalling - - B-TSDN application protocols for access signalling Q.lLQ.3 Q.4-Q.59 Q.60.99 Q. 100.119 Q. 120.249 Q.250.309 Q.310.399 Q.400.499 Q.500.599 Q.600.699 Q.700.849 Q.850.999 Q. 1000. 1099 Q. 1 100.1199 Q. 1200.1699 Q.1700.1799 Q.2000.2999 Q.2000.2099 Q.2100.2199 Q.2200.2299 Q.26
7、00.2699 Q.2700.2899 For further details, please re$er to the list of ITD-T Recommendations. ITU-T Recommendation 4.2971 F Digital Subscriber Signalling System No. 2 - User-network interface layer 3 specification for point-to-multipoint calkonnection control: Abstract test suite (ATS) and partial Pro
8、tocol Implementation extra Information for Testing (PIXIT) proforma for the network Summary This ITU-T Recommendation specifies Abstract Test Suite (ATS) and partial Protocol Implementation extra Information for Testing (PIXIT) proformas for the network at the TB reference point or coincident SB and
9、 TB reference point (as defined in ITU-T Recommendation 1.413 3) of implementations conforming to the procedures for the support of point-to-multipoint switched virtual channel connections, between a root and multiple leaves of the Digital Subscriber Signalling System No. 2 (DSS2) protocol for the B
10、roadband Integrated Services Digital Network (B-ISDN), ITU-T Recommendation 4.2971 i. Further parts of this ITU-T Recommendation specify the Protocol Implementation Conformance Statement (PICS) proforma and Test Suite Structure and Test Purposes (TSS all users of this Recommendation are therefore en
11、couraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. i ITU-T Recommendation 4.2971 (1995), Digital Subscriber Signalling System No. 2 (aSS2) -
12、User-network inte flace layer 3 specijkation for point-to-multipoint callUconnection control. ITU-T Recommendation 4.293 1 (1995), Digital Subscriber Signalling System No. 2 (aSS2) - User-Network Interface (v2vr) layer 3 specijkation for basic callUconnection control. ITU-T Recommendation 1.4 13 (1
13、993), B-ISDN user-network interface. 2 31 ITU-T Recommendation Q.297 1 F was previously numbered as Q.297 1 sexies during the approval process. ITU-T 4.2971 F (12/1999) 1 4 ETSI ETS 300 771-6 (1998), Broadband Integrated Services Digital Network (23-ISDN); Digital Subscriber Signalling System No. tw
14、o (aSS2) protocol; B-ISDN user-network inte flace layer 3 specijkation for point-to-multipoint callhearer control; Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation extra Information for Testing (PLxrT) proforma for the network. ETS 300 771-1 ETS 300 771-6 3 Endorsement The text
15、of ETS 300 771-6 4 was approved by ITU-T as Recommendation 4.2971 F with agreed modifications as given below. NOTE - New or modified text is indicated using sidebars. In addition, underlining and/or strike-out are used to highlight detailed modifications where necessary. ITU-T Recommendation Q.297 1
16、 (10/95) ITU-T Recommendation Q.297 1 F 4 Coverage This part of the Recommendation covers 4.297 1 11 as modified by 4.297 1 Corrigendum 1. Recommendation 4.297 1 specifies extensions of coding and procedures given in Recommendation 4.293 1 2 needed to handle point-to-multipoint calls/connections. Th
17、e purpose of test cases in this Recommendation is to check compliance to procedures of 4.2971 but the TTCN part also built upon coding and procedures of 4.2931 as amended by Amendment 1 (06/97), Amendment 2 (03/99) and Amendment 3 (03/99). standard 5 Modifications Throughout the text of ETSI ETS 300
18、 771-6 4, replace references and expressions as shown in the following table: Recommendation I Reference in ETS 300 771-6 I Modified reference I I ETS 300 771 I Recommendation of the Q.297 1 series I I ETS I Recommendation I 5.1 Page 5, Foreword Delete the whole Foreword. NOTE - It is replaced by th
19、e Foreword of this Recommendation. Page 7, clause 1 Scope Replace the whole clause 1 with the following: It 1 Scope See Clause 1, Scope, of this Recommendation above.“ Other modifications in the document part 2 ITU-T 4.2971 F (12/1999) Page 7, clause 2 Normative References Modify reference 2 as belo
20、w: “2 Void“ETS 3% 771 2 . 1. Or-Tn+arrrn+arlCar.r.no,nk (EDF?); %-g+k+ Page 33, subclause B.6.1, Note Delete the Note. Page 36, History Delete the whole clause “History“. 5.2 NOTE -Modifications in the TTCN part of this Recommendation are described in terms of changes in the TTCN.GR representation.
21、Length of the Called Party Number IE In the Declarations Part, Test Suite Type Definitions, ASN. 1 Type Definitions alter the definition for the type “CalledPartyNumber“ as below: Modifications in the TTCN part “SEQUENCE iEHeader IEHeader, iELength IELength, extension-o5 BIT STIUNG(SIZE(l), - Extens
22、ion bit, set to 1 B cpn-type BIT STIUNG(SIZE(3), - Type of number numberingplan-id BIT STIUNG(SIZE(4), address-digits IASString- OPTIONAL - Address/number digits - Addressing/numbering plan identzjkation I I Length of the Calling Party Number IE In the Declarations Part, Test Suite Type Definitions,
23、 ASN. 1 Type Definitions alter definition for the type “CallingPartyNumber“ as below: “SEQUENCE iEHeader IEHeader, iELength IELength, extension-o5 BIT STIUNG(SIZE(l), - Extension bit, set to 1 B cpn-type BIT STIUNG(SIZE(3), - Type of number numberingplan-id BIT STIUNG(SIZE(4), octet5a Octet5a OPTION
24、AL, - Optional octet 5a address-digits IASString- OPTIONAL - Address/number digits - Addressing/numbering plan identzjkation I Octet5a := SEQUENCE extension-05a BIT STIUNG(lB), - Extension bit, set to 1 B presentation-indicator BIT STIUNG(SIZE(L), spare-345 BIT STIUNG(SIZE(3), - Spare bits, normally
25、 set to OOOB screeningindicator BIT STIUNG(SIZE(2) I Length of the AAL parameters IE In the Declarations Part, Test Suite Type Definitions, ASN. 1 Type Definitions alter definition for the type “AAL-contents“ as follows: I “OCTET STIUNG(SIZE(lm)“. ITU-T 4.2971 F (12/1999) 3 Second Cause IE on T398 e
26、xpiry in the DROP PARTY ACKNOWLEDGE message In the Declarations Part, Test Suite Type Definitions, ASN. 1 Type Definitions modify definition for the type “Es-DROPPARTY-ACKNOWLEDGE“ as below: “SET causeg Causeg-, endPointReference EndPointReference I I “ In the Constraints Part, Test Suite Type Const
27、raint Declarations, ASN.l Type Constraint Declarations, modify the declaration of the constraint DPA-R1 as below: “iEs-DROP-PARTY-ACKNOWLEDGE sB!s ENI-REF: Er-value; CAU-VAL: Cause-value) Receive constraint; used for DROP PARTY ACKNOWLEDGE messages containing second Cause#lO2 Constraint Value iEsDR0
28、P-P ARTY-ACKNOWLEDGE causes cause CAUR1 (CAU-VAL), cause-repeated CAUR1 (1 02) IFPRESENT, Y endPointRe ference ERR1 (FLAGYENIPREF) I Detailed Comments: I In the Dynamic Part, Test Step Library, modify Behaviow Description of L3MN-PR-P3PS line 7, L3MN - PR P70 - P5 line 9, L3MN - PR P4 P5 line 5 and
29、L3MN - PR P71 - P5 line 6 as below: fCAUV:=DSS2 PDU.informationE1ements.iEs DROP PARTY.cause.cause value) CANCEL TWAIT“ In the Dynamic Part, Test Cases, modify Constraint Reference of L3MN-10-08 line 7, L3MN-10-09 line 7, L3MN-36-08 line 6 and L3MN-36-09 line 6 as: I “O?DSS2PDU I “Mr(DPA,FO,CREF,DPA
30、-4-(FO,EREF2,CAUV)“. Check cause on T399 expiry in the Drop Party message In the Dynamic Part, Test Cases, modify The Constraint References column for test cases as below. L3MN - 32 O 1 line 6: “MrP,FO,CREF,DP lQ*(FO,EREF2,C 102)“ L3MN - 32 02 he 6: “Mr(DP,FO,CREF,DP-4(FO,EREF2,ClO2)“ Check optional
31、 diagnostic in the STATUS message sent on error handling In the Declarations Part, Test Suite Type Definitions, ASN.l Type Definitions add the following new type: I ASN.l Type Definition I Type name: Diagnostics Encoding Variation: Comments: Diagnostics field of the Cause IE Type Definition BIT STRI
32、NG(SIZE(832) Detailed Comments: Ref.: Q2610 subclause 3.3; 1 octet when identifies IE or IE subfield, 4 octets when identifies a VC In the Declarations Part, Test Suite Type Definitions, ASN. 1 Type Definitions, alter the definition of the type “Cause“ as follows: “SEQUENCE iEHeader IEHeader, iELeng
33、th IELength, extension-o5 BIT STIUNG(SIZE(l), spare-567 BIT STIUNG(SIZE(3), - Spare bits, normally set to OOOB location BIT STIUNG(SIZE(4), - Extension bit, set to I B ITU-T 4.2971 F (12/1999) 5 extension-o6 BIT STIUNG(lB), cause-value Cause-value, diagnostics Diagnostics * -OPTIONAL - Extension bit
34、, set to 1 B I “ I In the Constraints Part, Test Suite Type Constraint Declarations, ASN.l Type Constraint Declarations, add a new constraint as below: ASN.l Type Constraint Declaration I Constraint name: CAU-R2(CAU-VAL: Cause-value; DIAG: Diagnostics) ASN.l Type: Cause Derivation Path Encoding Vari
35、ation: Comments: Receive constraint with parametrized cause DIAG: Diagnostics; CSTVAL: State-value; FLAG: Flag; ENI-REF: Ervalue; PST-VAL: State-value) Receive constraint; used for STATUS messages, allows to pass diagnostics in the Cause IE Constraint Value iEs-STATUS cause CAU-R2( CAU-VAL,DIAG), ca
36、llstate CST-R2(CST-VAL), endPointRe ference ERR1 (FLAGYENIPREF), endPointState EPST-R2(PST-VAL) I Detailed Comments: I In the Dynamic Part, Test Cases, modify The Constraint References column for test cases as below. , L3MN - 22 05line6: “Mr(ST,FO,CREF,ST_RZ ENI-REF: Er-value) Receive constraint; us
37、ed for ALERTING messages Constraint Value iEs-ALERTING connectionIdentifier *, notificationIndicator *, endPointRe ference ERR 1 (FLAG,ENI-REF) 1 Detailed Comments: ASN.l Type Constraint Declaration Constraint name: ASN.l Type: InformationElement s Derivation Path: Encoding Variation: Comments: CN-R
38、4(FLAG: Flag; END-REF: Er-value) Receive constraint; used for CONNECT messages including the Broadband low layer compatibility information element Constraint Value iEsCONNECT aTMAdaptionLayerParameters *, broadbandLowLayerInformation *, connectionIdentifier *, endToEndTransitDelay *, notificationInd
39、icator *, oAMTrafficDescriptor *, endPointRe ference ERR1 (FLAG,END-REF) 1 Detailed Comments: 8 ITU-T 4.2971 F (12/1999) In the Constraints Part, CM Constraint Declarations, TTCN CM Constraint Declarations, add a new coordination message: CMcontent I CM Constraint Declaration I I SENDDROPPARTY2P4“ C
40、onstraint Name: SDROPPARTY2P4 CM type: CP-M Derivation Path Comments: To trigger the sending of a DROP PARTY message for party 2 after receiving PARTY ALERTING I Field Name I Field Value I comments I In the Dynamic Part, Test Step Library, modify the “Constraints Ref column in line 4 of test step In
41、 the Dynamic Part, Test Step Library, modify test step L3MN-CSl as below: I L3MN _ PR P4 P5as:“S _ DROP _ PARTY2p4“. Test Step Dynamic Behaviour rest Step Name: L3m-CSl(ES: Statevalue; FL, ERFL: Flag; ER Er-value; PS: Statevalue) 3oup: 3bjective: Default: Uomments: To check the link state and one pa
42、rty state of the IUT. L3MIDEF(FL) Nr 1 - 2 3 4 5 6 7 L - Behaviour Description LO!DSS2PDU (ENI-FLAG := FALSE, WFL := INVERSE(FL), INV EFL := NVERSE(ERFL) START T322 REPEAT SUBTREECSl UNTIL ENI-FLAG SUBTREECS 1 LO?AAL-REL-IN (ES= NO) AND PX-L2-RELEASENOO CANCEL T322 LO?DSS2PDU CANCEL T322 (ENI-FLAG :
43、= TRUE) (ENI-FLAG := TRUE) L!?DEE2 - ?DE :ETTEE - E2ECTEE /QT A TT TQ DVDDfTDn .- O AT QD - ?TIMEOUT T322 (ENI-FLAG := TRUE) I Constraint Ref Mr( ST,INVFL,CREF ,ST-R1(C30,ES,INV- EFL,ER,PS) /QTlLTiI OT fDl7F -I,- .I-,-L- Comments (1) (3) (4) no response ITU-T 4.2971 F (12/1999) 9 Detailed Comments:
44、(I A STATUS ENQUIRY message containing anEndpoint reference information element is sent. (2) The subtree SUBTREECS is repeated until a STATUS message indicating the current link and party (3) A AAL-RELEASE-INDICATION is received. The IUT has released layer 2 after entering NO. (4) A STATUS message i
45、s received indicating the expected link and party state values and the appropriate state and a valid cause value is received. cause value 30. . A QTATTTC! WLX” . . n the Dynamic Part, Test Step Library, modify test step PTC1-IN as below: 10 Test Step Dynamic Behaviour rest Step Name: PTCl-IN 3oup: l
46、bjective: lefault: 2omments: Test step to initiate and handle incoming calls (ftom the MTCs point of view). PTCl-DEF(F0) Behaviour Description +PTClPR REPEAT MAINTREE UNTIL END-FLAG MAINTREE CPAl?CPM L1 !DSS2_PDU CPAl?CPM L1 !DSS2_PDU CPAl?CP-M BEND OK1 L1 !DSS2_PDU CPAl?CPM L1 !DSS2_PDU CPAl?CP-M L
47、1 !DSS2_PDU CPAl?CP MSEND OK1 Ll!DSS2 PDU CPAl?CPM L1 !DSS2_PDU YPAl?CPM SEND OK1 L1 !DSS2_PDU Ll?DSS2_PDU CPA1 !CPM Ll?DSS2_PDU ITU-T 4.2971 F (12/1999) Constraint Ref S-SETUP Ms(SU,FO,CREF,SU-S2(F 0,EREF 1 ,ATMTDS) S-SETUPEREF-O Ms(SU,FO,CREF,SU-S2(F 0,000000000000000?3,AT S-ADD-PARTY Ms(AP,FO,CRE
48、F,AP-S3(F O,EREF2) S-DROP-P ARTY 1 Ms(DP,FO,CREF,DP-S l(F O,EREFl,C16) S-DROP-PARTY2 Ms(DP,FO,CREF,DP-S l(F O,EREF2,C 16) S DROP PARTY2 P4 MsDP.FO.CREF.DP S1F 0.EREF2.C 16) SNOTIFY Ms(NO,FO,CREF,NO-S 1) S-RELEASE Ms(RL,FO,CREF,RL-S l(C Mr(AL,Fl ,CREF,AL-R2) R-ALERTING Mr(RL,Fl ,CREF,RL-Rl) MTD-S) 16
49、) V Comments L1 !DSS2_PDU (END-FLAG:=TRUE) L1 ?DS S2-PDU (END-FLAG:=TRUE) CPAl?CPM (END-FLAG:=TRUE) +PTC lPO(F0) Ll?DSS2 PDU Ms(RC,FO,CREF,RC-S2) Mr(RC,Fl ,CREF,RC-Rl) STOPPTC (SEND OK:=TRUE) Ll?DSS2 PDU (SEND OK:=TRUE) Ll?DSS2 PDU (SEND OK:=TRUE) MrAL.Fl.CREF.AL R3F l.EREF11) MrPA.Fl.CREF.PA RlF l.EREF1) MrAL.Fl.CREF.AL R3F l.EREF1) letailed Comments: I) I 3, 4, The subtree that handles all message transfers at PTCl is called in a RE
