1、- INTERNATIONAL TELECOMMUN KATION UN ION CCITT THE INTERNATIONAL TELEGRAPH AND TELEPHONE CONSULTATIVE COMMITTEE SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.784 ISUP BASIC CALL TEST SPECIFICATION Recommendation Q.784 Geneva, 1991 INTERNATIONAL TELECOMMUN CATION UN ION CCITT THE INTERNATIONAL TELEGRAP
2、H AND TELEPHONE CONSULTATIVE COMMITTEE SPEC1 FICATIONS OF SIGNALLING SYSTEM No. 7 Q.784 ISUP BASIC CALL TEST SPECIFICATION Recommendation Q.784 Geneva, 1991 FOREWORD The CCIT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the International Telecommunicatio
3、n Union (ITU). CCITT is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The Plenary Assembly of CCITT which meets every four years, establishes the topics for study and approv
4、es Recommendations prepared by its Study Groups. The approval of Recommendations by the members of CCITT between Plenary Assemblies is covered by the procedure laid down in CCITT Resolution No. 2 (Melbourne, 1988). Recommendation Q.784 was prepared by Study Group XI and was approved under the Resolu
5、tion No. 2 procedure on the 15 of February 1991. CC NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication Administration and a recognized private operating agency. o ITU 1991 Ail rights reserved. No part o L publication may be repro
6、duced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the IT. CCITT RECMN*6?.784 91 4862593 0563650 Recommendation Q.784 ISUP BASIC CALL TEST SPECIFICATION 1 Introduction This Recommendation contains a detail
7、ed set of tests for the Signalling System No. 7 integrated services digital network User Part (ISUP). Thiese tests are intended to validate the protocol specified in the Blue Book (1988) Recommendations Q.761-4.764. Most tests contained in this Recommendation are applicable to the Recommendation 4.7
8、67 (1990). This Recommendation conforms to Recommendation 4.780 which describes the basic rules of the test specification. 2 Objective of the test specification The objective of the test specification is to provide: Validation- A level of confidence that a given implementation conforms to the Recomm
9、en- dations Q.761-4.764 for S.S. No. 7 ISUP. Compatibility - A level of confidence that two implementations of S.S. No. 7 ISUP are compatible. In order to ensure that this test specification meets this objective, the following criteria are used 1) The test specification is not intended to provide ex
10、haustive testing of all aspects of the S.S. No. 7 ISUP. 2) All tests should add value in meeting the objective stated above. For example, the testing of timers of which the only function is to alert maintenance staff on expiry may not be useful. 3) All tests should be of a practical nature and imple
11、mentable using the available technology. 4) The test list should concentrate on the testing of normal signalling sequence. Testing of abnormal signalling procedures will only be identified where this is regarded as particularly useful. 3 Scope of the test list The test list is composed based on the
12、Blue Book Recommendations 4.761-4.764. However, only stable and clearly specified procedures in the Blue Book Recommendation 4.764 are included, i.e. confusion procedures and congestion control/user flow control procedges are for further study. 4 General principles of tests The tests are described a
13、s “Validation” tests or “Validation” and “Compatibility” tests. Each test description indicates in the field “type of test” whether the test is a “Validation” test or a “Validation” and “Compatibility” test. In addition to signalling protocol testing, some call control functions are also verified, e
14、.g. the transfer of speech/information is possible. Recommendation 4.784 I CCITT RECMN*Q*784 91 W 4862593 0561653 T 5 Test environment 5.1 Signalling relation A stable signalling relation is required between “SP A” and “SP B” in order to carry out effective tests. A tested MTP signalling link should
15、 be used for compatibility tests. In addition, telephony/data circuits are required for some of the tests. 5.2 Configuration Only one configuration is required for the performance of these tests as shown in Figure VQ.784. SP B INote (Under test) T1123660-90 Note -The mows indicate a signalling relat
16、ion, and any necessary telephone/data circuits. FIGURE 1/Q.784 Test configuration for ISUP basic Cali tests - Configuration 1 For some tests, the sentence “Repeat the test in the reverse direction” in the test description portion indicates that the “signalling point under test” becomes SP B. 6 ISUP
17、test list Ail tests may be validation tests. Tests marked “*” are compatibility tests. Tests marked “f” are for further study. 1 Circuit supervision * 1.1 Non-allocated circuits 1.2 Reset of circuits 1.2.1 1.2.2 1.2.3 RSC received on an idle circuit RSC sent on idle circuit RSC received on a locally
18、 blocked circuit 1.2.4 1.2.5 Circuit group reset received 1.2.6 Circuit group reset sent 1.2.7 RSC received on a remotely blocked circuit Circuit group reset received on remotely blocked circuits 2 Recommendation 4.784 * * * * * * * * f 2 * * * * * * * * * * * 1.3 1.3.1 1.3.1.1 1.3.1.2 1.3.2 1.3.2.1
19、 1.3.2.2 1.3.2.3 1.3.2.4 1.4 . 1.4.1 1.4.2 1.4.3 1.4.4 1.4.5 1.5 1.5.1 1.5.2 1.5.3 1.5.4 CCITT RECMN*Q.784 91 4862591 05bLb.52 L Blocking of circuits Circuit group blocking/unblocking CGB and CGU received CGB and CGU sent Circuit blocking/unblocking BLO received BLO sent Blocking from both ends; rem
20、oval of blocking from one end IAM received on a remotely blocked circuit Continuity check test call CCR received: successful CCR sent: successful CCR received: unsuccessful CCR sent: unsuccessful CCR received: unsuccessful, verify “27 timer Receipt of unreasonable signalling information messages Rec
21、eipt of unexpected messages Receipt of unexpected messages during call setup Receipt of unexpected messages during a call Confusion procedures Normal call setup - Ordinary speech cab 2.1 2.1.1 2.1.2 2.2 2.2.1 2.2.2 2.3 2.3.1 2.3.2 2.3.3 2.3.4 2.3.5 2.3.6 2.3.7 Both way circuit selection IAM sent by
22、controlling SP IAM sent by non-controlling SP Called address sending “en bloc” operation Overlap operation (with SAM) Successful cali setup rdinary call (with various indications in ACM) Ordinary call (with ACM, CPG, and ANM) Ordinary call (with various indications in CON) Call switched via satellit
23、e Echo control procedure for call setup Blocking an unblocking during a call (initiated) Blocking and unblocking during a call (received) Recommendation 4.784 3 CCITT RECMNMQ.784 91 W 4862573 0563653 3 3 * * * * * * 4 * 5 * * * 4 Normal call release 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 Collision of REiL
24、messages Unsuccessful call setup 4.1 Abnormal situation during a call 5.1 5.2 Timers 5.2.1 5.2.2 5.2.3 5.2.4 5.2.5 5.2.6 5.2.7 5.2.8 5.2.9 5.2.10 5.2.11 5.3 Reset of circuits during a call 5.3.1 Of an outgoing circuit 5.3.2 Of an incoming circuit Calling party clears before address complete Calling
25、party clears before answer Calling party clears after answer Cailed party clears after answer Suspend initiated by the network Suspend and resume initiated by a calling party Suspend and resume initiated by a called party Validate a set of known causes for release Inability to release in response to
26、 a REL after ANM T7: waiting for ACM or CON T9: waiting for an answer message T1 and T5: failure to receive a RLC T6 waiting for RES (Network) message T8: waiting for COT message if applicable T12 and T13: failure to receive a BLA T14 and T15: failure to receive a UBA T16 and T17: failure to receive
27、 a RLC T18 and T19: failure to receive a CGBA T20 and “21: failure to receive a CGUA T22 and T23: failure to receive a GRA Recommendation Q.784 CCITT RECMN*Q.784 91 48b2591 05b1b54 5 - 6 * * * * * 7 * * * * 8 Special call setup 6.1 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.2 6.2.1 6.2.2 6.2.3 6.2.4 6.2.5 6.3
28、6.3.1 6.4 6.4.1 6.4.2 6.4.3 6.4.4 Continuity check call Continuity check required COT applied on previous circuit Calling party clears during a COT Delay of through connect COT unsuccessful Automatic repeat attempt Dual seizure for non-controlling SP Blocking of a circuit Circuit reset Continuity ch
29、eck failure Reception of unreasonable signalling information Dual seizure Dual seizure for controlling SP Semi-automatic operation FOT sent following a call to a subscriber FOT received following a call to a subscriber FOT sent following a call via codes 11 and 12 FOT received following a call via c
30、odes 11 and 12 Bearer services 7.1 64 kbit/s unrestricted 7.1.1 Successful call setup 7.1.2 Unsuccessful call setup 7.1.3 Dual seizure 7.2 3.1 WIZ audio 7.2.1 Successful call setup Congestion control and user flow control Further study. Recommendation Q.784 5 CCITT RECMN*Q.7B4 91 4Bb2593 0563655 7 I
31、SUP Basic Call Test Specification TESTNUMBER 1.1 REFERENCE TITLE Circuit supervision SUBTITLE Non-allocated circuits PURPOSE To verify that on receipt of a CIC relating to a circuit which does not exist, SP A will discard the message and alert the maintenance system PRE-TESTCONDITIONS: Arrange the d
32、ata in signalling point B such that the CIC identifies a circuit that does not exist between SP A and SP B CONFIGURATION 1 TYPE OF TEST VAT and CPT TYPEOFSP SP EXPECTED MESSAGE SEQUENCE SP A SP B IAM TEST DESCRTPTION Arrange for SP B to send an initial address message. Record the message sequence us
33、ing a signai monitor. CHECK A: WAS THE MESSAGE SEQUENCE AS SHOWN ABOVE? . . . CHECK B: WAS THE INDICATION GIVEN TO THE MAINTENANCE SYSTEM?. . 6 Recommendation Q;74 CCITT RECMN*Q-784 93 m 4862593 05bLb5b 9 m - CONFIGURATION 1 ISUP Basic Call Test Specification TEST NUMBER: 1.2.1 REFERENCE Q.764 Secti
34、on2.10.3.1 a), b) TYPEOFTEST VAT TYPEOFSP SP TInE Reset of circuits SUBTITLE RSC received on an idle circuit PURPOSE To verify that on receipt of a reset circuit message SP A will respond by sending a release complete message PRE-TEST CONDITIONS: The circuit is idle RI SP B RSC TEST DESCRIPIION Arra
35、nge for SP B to send a reset-circuit message. Record the message sequence using a signal monitor. CHECK A IS THE CIRCUIT IDLE? . . . CHECK B: WAS THE MESSAGE SEQUENCE AS ABOVE? . . . Recommendation Q.784 7 ISUP Basic Call Test Specification 1 TESTNUMBER 1.2.2 1 REFERENCE Q.764 Section 2.10.3.1 TITLE
36、 Reset of circuits SB“I“,E RSC sent on an idle circuit PURPOSE To veri that SP A is able to generate reset-circuit message PRE-TEST CONDITIONS: The circuit is idle CONFIGURATION 1 TYPEOFTEST VAT TYPEOFSP: SP EXPECTED MESSAGE SEQUENCE SP A RSC 8 SP B RZXJ TEST DESCRIPTION Arrange for SP A to send a r
37、eset-circuit message. Record the message sequence using a signal monitor. CHECK A: IS THE CIRCUIT IDLE? . . . CHECK B: WAS THE MESSAGE SEQUENCE AS ABOVE? . . . Recommendation Q.784 CCITT RECMN*Q-74 9% m 4862593 0563658 2 9 CONPIGURATON 1 ISUP Basic Call Test Specification TESTNUMBER 1.2.3 TYPEOFTEST
38、 VAT TYPEOFSP: SP I REFERENCE 4.764 Section 2.10.3.1 c) TiTLE Reset of circuits SUBTITLE: RSC received on a locally blocked circuit EXPECTED MESSAGE SEQUENCE SP A SP B BLO BLO RLC (Note) BLA RSC BLA (Note) TEST DESCRIPTION Arrange for SP A to send a blocking message. Record the message sequence usin
39、g a signai monitor. Arrange for SP B to send a reset-circuit message. CHECK A DOES THE CIRCUiT REMAIN IN THE LOCALLY BLOCKED STATE?. . . CHECK B: WAS THE MESSAGE SEQUENCE AS ABOVE? . . . Note -The message sequence for RLC and BLA may occur in reverse sequence. Recommendation Q.784 9 CCITT RECMN*Q*7B
40、4 91 48b259L OSbLb59 4 ISUP Basic Call Test Specification EST NUMBER: 1.2.4 REFERENCE Q.764 Section 2.10.3.1 d) IITLE Reset of circuits SUBTITLE: RSC received on a remotely blocked circuit PURPOSE To verify that SP A is able to react to a reset-circuit message for a remotely blocked circuit PRE-TEST
41、 CONDITIONS: The circuit is idle CONFIGURATION 1 TYPEOFTEST VAT “YPEOFSP SP EXPECTED MESSAGE SEQUENCE SP A BLA RLC SP B BLX RSC TEST DESCRIPTION Arrange for SP B to send a blocking message. Record the message sequence using a signal monitor. Arrange for SP B to send a reset-circuit message. CHEEK A
42、IS THE CIRCUITIDLE?. . . CHECK B: WAS THE MESSAGE SEQUENCE AS ABOVE?. . . 10 Recommendation 4.784 ISUP Basic Call Test Specification TESTNUMBER 1.2.5 REFERENCE 4.764 Section 2.10.3.2 CONFIGURATiON 1 TYPEOFTEST VAT TITLE: Reset of circuits SUBTLE Circuit group reset received PURPOSE: To verify that o
43、n receipt of one circuit group reset message SP A will respond by sending a circuit group reset acknowledge message TYPEOFSP: SP _ EXPECTED MESSAGE SEQUENCE SP A GRA SP B GRS TESTDESCRIPTION Arrange for SP B to send a circuit group reset message. Record the message sequence using a signal monitor. C
44、HECK A; ARE THE CIRCUlTS IDLE? . . . CHECK B: WAS THE MESSAGE SEQUENCE AS ABOVE? . . CHECK C ARE THE STATS BITS IN GRA SET CORREC LY? CHECK D: IF RANGEO, GRS IS DISCARDED AND GRA IS NOT SENT. CHECK E IF RANGb3 1, GRS IS DISCARDED AND GRA IS NOT SENT. Recommendation 4.784 11 ISUP Basic Call Test Spec
45、iffcation EST NUMBER. 1.2.6 REFERENCE Q.764 Section 2.10.3.2 IITLE Reset of circuits SUBnE Circuit group reset sent PURPOSE To veriy that SP A is able to generate a circuit group reset message PRE-TEST CONDITIONS: All circuits are idle CONFIGURATION 1 1 TYPEOFTEST VAT I TYPEOFSP SP EXPECTED MESSAGE
46、SEQUENCE SP A GRS SP B GRA CCITT RECMN*Q.784 93 4862593 0561bbL 2 = Recommendation Q.784 TEST DESCRIPTION Arrange for SP A to send a circuit group reset message. Record the message sequence using a signal monitor. CHECK A: ARE THE CIRCUITS IDLE? . . . 21 3 CHECK B: WAS THE MESSAGE SEQUENCE AS ABOVE?
47、 . . . ISUP Basic Call Test Specification TESTNUMBER 1.2.7 REFERENCE: 4.764 Section 2.10.3.2 d) CONFIGURATION 1 I TITLE Reset of circuits TYPEOFTEST VAT TYPEOFSP SP SUBTITLE Circuit group reset received on remotely blocked circuits PURPOSE To verify that SP A is able to react to a circuit group rese
48、t message correctly for remotely blocked circuits PRE-TEST CONDITIONS: All circuits are idle SP A BLA BLA GRA SP B BLO (CIC=x) BLO (CIC=y) GRS (including CIC=x,y) TEST DESCRPHON hange for SP B to send a circuit group reset message including the blocked circuits x and y. Record the message sequence u
49、sing a signai monitor. CHECK A: ARE THE CIRCUITS IDLE? . . . CHECK B: WAS THE MESSAGE SEQUENCE AS ABOVE? . . . Recommendation Q.784 13 CCITT RECMN*Qm784 93 4862571 0563663 6 ISUP Basic Call Test Specification TESTNUMBER 1.3.1.1 REFERENCE Q.764 Section 2.9.2 TITLE Circuit group blocking/unblocking SUBTITLE: CGB and CGU received PURPOSE To verify that the circuit group blocking feature can be correctly initiated PRE-TEST CONDITIONS: All circuits are idle CONFIGURATION. 1 TYPE OF TEST VAT and CFT TYPEOFSP SP E
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