1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.2971 D (1 211 999) 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 specific
2、ation 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 user ITU-T Recommendation Q.2971 D (Formerly CCITT Recommendation) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLIN
3、G 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 INT
4、ERWORIUNG 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-T
5、 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 th
6、e 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.2600
7、.2699 Q.2700.2899 For further details, please re$er to the list of ITD-T Recommendations. ITU-T Recommendation 4.2971 D Digital subscriber signalling system No. 2 - User-network interface layer 3 specification for point-to-multipoint calkonnection control: Abstract Test Suite (ATS) and partial Proto
8、col Implementation extra Information for Testing (PIXIT) proforma for the user Summary This ITU-T Recommendation specifies Abstract Test Suite (ATS) and partial Protocol Implementation extra Information for Testing (PIXIT) proforma for the user attached to the TB reference point or coincident SB and
9、 TB reference point (as defined in ITU-T Recommendation 1.4 13 31) 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
10、 Broadband 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
11、 encouraged 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 interface layer 3 specijkation for point-to-multipoint caUconnection control. ITU-T Recommendation Q.2971 D was previously numbered as Q.2971 quater during the approval process. ITU-T 4.2971 D (12/1999) 1 2 ITU-T Recommendation 4.293 1 (1995), Digital Subscriber Signalling System No.
13、 2 (aSS2) - User-network interface (v2vr) layer 3 specijkation for basic callUconnection control. ITU-T Recommendation 1.4 13 (1 993), B-ISDN user-network interface. ETSI ETS 300 771-4 (1998), Broadband Integrated Services Digital Network (23-ISDN); Digital Subscriber Signalling System No. two (aSS2
14、) protocol; B-ISDN user-network inte flace layer 3 specijkation for point-to-multipoint callhearer control; Part 4: Abstract Test Suite (A TS) and partial Protocol Implementation extra Information for Testing (PLxrT) proforma for the user. 31 4 ETS 300 771-1 ETS 300 771-4 ETS 3 Endorsement The text
15、of ETS 300 771-4 4 was approved by ITU-T as Recommendation 4.2971 D 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.2971(
16、10/95) ITU-T Recommendation Q.297 1 D Recommendation 4 Coverage This ITU-T Recommendation covers protocol specification of Recommendation 4.297 1 i as modified by 4.2971 Corrigendum 1 (12/99). Recommendation 4.297 1 specifies extensions of coding and procedures given in Recommendation 4.293 1 2 need
17、ed to handle point-to-multipoint calls/connections. The purpose of test cases in this Recommendation is to check compliance to procedures of RecommendationQ.2971 but the TTCN part also built upon coding and procedures of Recommendation 4.293 1 as amended by 4.293 1 Amendment 1 (06/97), Amendment 2 (
18、03/99) and Amendment 3 (03/99). 5 Modifications Throughout the text of ETSI ETS 300 771-4 4, replace references and expressions as shown in the following table: I Reference in ETS 300 771-4 I Modified reference I I ETS 300 771 I Recommendation of the Q.297 1 series I I standard I Recommendation I 5.
19、1 Page 5, Foreword Delete the whole Foreword. NOTE - It is replaced by the Foreword of this Recommendation. Other modifications in the document part 2 ITU-T 4.2971 D (12/1999) Page 7, clause 1, Scope Replace the whole clause with the following: “1 Scope See clause 1, Scope, of this Recommendation ab
20、ove.“ Page 30, subclause B.6.1, Note Delete the Note. Page 34, Annex D (informative): Bibliography Delete the Annex. Page 35, 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. L
21、ength of the Called Party Number IE In the Declarations Part, Test Suite Type Definitions, ASN.l 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), - Extensi
22、on 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.l Type Definitions, alter the 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 OPT
24、IONAL, - Optional octet 5a address-digits IASString- OPTIONAL - Address/number digits - Addressing/numbering plan identzjkation I 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, nor
25、mally set to OOOB screeningindicator BIT STIUNG(SIZE(2) I ITU-T 4.2971 D (12/1999) 3 Length of the AAL parameters IE In the Declarations Part, Test Suite Type Definitions, ASN.l Type Definitions, alter the definition for the type “AAL-contents“ as follows: I “OCTET STRING(SIZE(l)“. Second Cause IE o
26、n T398 expiry in the DROP PARTY ACKNOWLEDGE message In the Declarations Part, Test Suite Type Definitions, ASN.l Type Definitions, modify the definition for the type “Es - DROP - PARTY - ACKNOWLEDGE“ as below: “SET causeg Causeg-, endPointReference EndPointReference I I In the Constraints Part, Test
27、 Suite Type Constraint Declarations, ASN.l Type Constraint Declarations, modify the declaration of the constraint DPA-R1 as below: YES-DROP-PARTY-ACKNOWLEDGE sB!s ENI-REF: Ervalue; CAU-VAL: Cause-value) Receive constraint; used for DROP PARTY ACKNOWLEDGE messages containing second Cause#lO2 I Constr
28、aint Value I iEsDR0P-P ARTY-ACKNOWLEDGE causes cause CAUR1 (CAU-VAL), cause-repeated CAUR1 (1 02) IFPRESENT, Y endPointRe ference ERR1 (FLAGYENIPREF) 1 Detailed Comments: I In the Dynamic Part, Test Step Library, modify Behaviow Description of L3MU-PR-P3PS line 4, L3MU - PR P70 - P5 line 6, L3MU - P
29、R P4 P5 line 5 and L3MU - 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 in line 5 of test cases L3MU-08-11, L3MU-08-12, L3MU 31-06 and L3MU - 31-07 as: Check optional diagn
30、ostic 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 “O?DSS2PDU I “Mr(DPA,FO,CREF,DPA-4(FO,El%F2,CAUV)“ ASN.l Type Definition Type name: Diagnostics Encoding Variation: Comments: Diagnostics fi
31、eld of the Cause IE Type Definition I BIT STRING(SIZE(832) I Detailed Comments: Ref 3.3/Q.2610; 1 octet when identifies IE or IE subfield, 4 octets when identifies a VC In the Declarations Part, Test Suite Type Definitions, ASN.l Type Definitions, alter the definition of the type “Cause“ as follows:
32、 “SEQUENCE iEHeader IEHeader, iELength 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-o6 BIT STIUNG(lB), cause-value Cause-value, diagnostics Diaonostics -OPTIONAL - Extension bit, set to 1 B - Extens
33、ion bit, set to 1 B I “ ITU-T 4.2971 D (12/1999) 5 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 Constraint name: CAU-R2(CAU-VAL: Cause-value; DIAG: Diagnostics) ASN.l Type: Cause
34、 Derivation Path Encoding Variation: 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 c
35、ause CAU-R2( CAU-VAL,DIAG), callstate CST-R2(CST-VAL), endPointRe ference ERR1 (FLAGYENIPREF), endPointState EPST-R2(PST-VAL) Detailed Comments: In the Dynamic Part, Test Cases, modify the “Constraint Ref column as below. L3MU-2 1-05 lhe 4: “Mr(ST,FO,CREF,ST_Rz4(C99,PX UNRECOGNISED ID,U4,FO,EREF2,Pl
36、)“ L3MU - 2 1 06 lhe 4: “Mr(ST,FO,CREF,ST_Rz4(C99,PX UNRECOGNISED ID,UlO,FO,EREF2,Pl)“ L3MU-2 1-1 1 lhe 4: “Mr(ST,FO,CREF,ST_Rz4(ClOO,Notification indicator IDU4,FO,EREF2,P 1)“ L3MU - 2 1 12 lhe 4: “Mr(ST,FO,CREF,ST_Rz4(ClOO,Notification indicator ID,UlO,FO,EREF2,Pl)“ L3MU-2 1-1 7 lhe 4: “Mr(ST,FO,C
37、REF,ST_Rz4(C99,PX UNRECOGNISED ID,U4,FO,EREF2,Pl)“ L3MU - 2 1 18 lhe 4: “Mr(ST,FO,CREF,ST_Rz4(C99,PX UNRECOGNISED ID,UlO,FO,EREF2,P4)“ L3MU - 21 23 lhe 4: I “Mr(ST,FO,CREF,ST_R4(ClOO,Broadband low laver info ID,U4,FO,EREF2,Pl)“ 6 ITU-T 4.2971 D (12/1999) L3MU - 21 24 line 4: “Mr(ST,FO,CREF,ST-Rz4(Cl
38、OO,Broadband low laver info ID,UlO,FO,EREF2,P4)“ L3MU - 2 1 37 line 8: “Mr(ST,FO,CREF,ST-R34(ClOO,Notification indicator ID,U4,FO,EREF2,P6)“ L3MU-2 1-3 8 he 8: “Mr(ST,FO,CREF,ST-R34(ClOO,Notification indicator ID,UlO,FO,EREF2,P6)“ L3MU-2 1-39 line 8: “Mr(ST,FO,CREF,ST-R34(ClOO,Notification indicator
39、 ID,UlO,FO,EREF2,P6)“ L3MU - 2 1 48 line 4: “Mr(ST,FO,CREF,ST-R34(ClOO,Cause ID,U4,FO,EREF2,PO)“ L3MU - 2 1 49 he 4: “Mr(ST,FO,CREF,ST-R34(ClOO,Cause ID,UlO,FO,EREF2,PO)“ L3MU-43-05 he 1 1 : “Mr(ST,F 1 ,CREF,ST-R34(C99,PX UNRECOGNISED ID,U7,F 1 ,EREF2,P2)“ L3MU-43-06 line 1 1 : “Mr(ST,F 1 ,CREF,ST-R
40、34(C99,PX UNRECOGNISED ID,UlO,Fl ,EREF2,P2)“ L3MU - 43 11 line 11: L3MU - 43 12 line 11: “Mr(ST,Fl,CREF,ST-Rz4(ClOO,Broadband low laver info ID,UlO,Fl,EREF2,P2)“ L3MU-43-25 line 8: “Mr(ST,F 1 ,CREF,ST_R34(ClOO,Notification indicator ID,U7,F1 ,EREF2,P6)“ L3MU-43-26 line 8: “Mr(ST,Fl,CREF,ST-R34(ClOO,
41、Notification indicator ID,UlO,Fl,EREF2,P6)“ L3MU-43-27 line 8: “Mr(ST,F 1 ,CREF,ST_R34(ClOO,Notification indicator ID,UlO,F 1 ,EREF2,P6)“ L3MU-43-36 line 4: “Mr(ST,F 1 ,CREF,ST_R34(ClOO,Notification indicator ID,U7,F1 ,EREF2,PO)“ L3MU-43-37 line 4: “Mr(ST,Fl,CREF,ST-R34(ClOO,Notification indicator I
42、D,UlO,Fl,EREF2,PO)“ In the Dynamic Part, Test Step Library, modify test step L3MU-CS1 as below: I “Mr(ST,F l,CREF,ST-R34(ClOO,Broadband low laver info ID,U7,F1 ,EREF2,P2)“ Test Step Dynamic Behaviour Test Step Name: Objective: To check the link state and one party state of the IUT. Default: L3MUDEF(
43、FL) Comments: L3ML-CSl(ES: Statevalue; FL, ERFL: Flag; ER Er-value; PS: Statevalue) Group: - Nr 1 - 2 3 4 5 6 7 8 9 10 - Behaviour Description LO!DSS2PDU (ENI-FLAG := FALSE, INVFL := INVERSE(FL), INV EFL := INVERSE(ERFL) START T322 REPEAT SUBTREECSl UNTIL ENI-FLAG SUBTREECS 1 LO?AAL-REL-IN (ES= UO)
44、AND PX-L2-RELEASEUOO CANCEL T322 (ENI-FLAG := TRUE) LO?DSS2 - PDU CALL-STATE = U91 (CALL-STATE := U7, PARTY-STATE := P3) LO?DSS2PDU (CALL-STATE = US) OR (CALL-STATE = U7) (CALL-STATE := US) LO?DSS2PDU CANCEL T322 (END FLAG := TRUE) Constraint Ref Ms( SQ ,FL,CREF , SQS 1 (ERFL,ER) Mr(AL, INVFL,CREF ,
45、 AL-R1 (INVEFL,ER) Mr( CN,INVFL,CREF, CNR1 (INVEFL,ER) Mr( ST , INVFL,CREF , ST-Rl(C30,CALL- STATE,INVEFL,ER, PARTY-STATE) V Comments ITU-T 4.2971 D (12/1999) 7 /QT A TTTQ OVDOfTOn .- O AT QO - ?TIMEOUT T322 (ENI-FLAG := TRUE) 0 no response Detailed Comments: (I A STATUS ENQUIRY message containing a
46、nEndpoint 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 is received indicating the expected link
47、and party state values and the appropriate state and a valid cause value is received. cause value 30. A QTATTTQQfATTlT . Editorial and Syntactical changes In the Declarations Part, Test Suite Type Definitions, ASN. 1 Type Definitions, modify definitions of types “CalledPartySubaddress“ and “CallingP
48、artySubaddress“ as follows: “SEQUENCE iEHeader IEHeader, iELength IELength, extension-o5 BIT STRTNG(lB), cps-type BIT STRTNG(SIZE(3), - Extension bit, set to 1 B - Type of subaddress odd-even-indicator BIT STRING(SIZEU4), spare-123 BIT STRTNG(SIZE(3), - Spare bits, normally set to OOOB subaddress-in
49、fo IA5String(SIZE(O20) OPTIONAL - Subaddress information In the Constraints Part, Test Suite Type Constraint Declarations, ASN.l Type Constraint Declarations, modify declarations of constraints SU-R1, SU-= and SU-R3, as below: I I I YEs-SETUP aTMAdaptionLayerParameters AALP-R Il-PRESENT, aTMTraffcDescriptor ATMTJ-R1, broadbandBearerCapability BBC-R, broadbandHighLayerInformation BHLC-R Il-PRESENT, broadbandLowLayerInformations (si
