1、- ITU-T RECMN*Q.b27 93 m 48b259L 0589144 O11 m INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.627 (03/93) INTERWORKING OF SIGNALLING SYSTEMS INTERWORKING OF SIGNALLING SYSTEMS - LOGIC PROCEDURES FOR OUTGOING SIGNALLING SYSTEM No. 7 (ISUP) ITU=T Recommen
2、dation Q.627 (Previously “CCITT Recommendation”) ITU-T RECflN*Q=b2? 93 = 4862593 0.589145 T58 D FOREWORD The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecom- munication Union. The ITU-T is responsible for studying technical, operating and tariff
3、 questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, established the topics for study by the ITU-T Study Groups which, in their turn, produce R
4、ecommendations on these topics. ITU-T Recommendation Q.627 was prepared by the ITU-T Study Group XI (1988- 1993) and was approved by the WTSC (Helsinki, March 1-12, 1993). NOTES 1 As a consequence of a reform process within the International Telecommunication Union (ITU), the CCITT ceased to exist a
5、s of 28 February 1993. In its place, the ITU Telecommunication Standardization Sector (ITU-T) was created as of 1 March 1993. Similarly, in this reform process, the CCIR and the IFRB have been replaced by the Radiocommunication Sector. In order not to delay publication of this Recommendation, no cha
6、nge has been made in the text to references containing the acronyms “CCITT, CCIR or IFRB” or their associated entities such as Plenary Assembly, Secretariat, etc. Future editions of this Recommendation will contain the proper terminology related to the new ITU structure. 2 telecommunication administ
7、ration and a recognized operating agency. In this Recommendation, the expression “Administration” is used for conciseness to indicate both a O ITU 1994 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including phot
8、ocopying and microfilm, without permission in writing from the ITU. ITU-T RECMNsd.627 93 48b259L 0589L4b 994 +. Recommendation Q.627 INTERWORKING OF SIGNALLING SYSTEMS - LOGIC PROCEDURES FOR OUTGOING SIGNALLING SYSTEM No. 7 (ISUP) (Helsinki, 1993) State number O0 o1 02 03 o4 05 07 o9 State desCrpiio
9、n Sheet reference rmm Idle 1,8 Wait for call setup info Wait for continuitycheck 2 tl t2 Wait for continuity indicator 3 f2 5 12 a t3 t7 1 Wait for address complete Wait for answer 5 Answered 6 Wait for RLC FIGURE VQ.627 State overview diagram for outgoing Signalling System No. 7 (ISUP) Recommendati
10、on Q.627 (03/93) 1 ITU-T RECMN*=b27 93 m 48b259L 0589147 820 m Supervisory timers for outgoing Signalling System No. 7 (ISUP) t, =2s t2 = 20 - 30 s t, = 4 - I5 s 9 = 1 minute Waiting for continuity check Waiting for address signal Waiting for Release Complete after Release Stop repeat sending of Rel
11、ease on 5 timeout Information contents of FITEs and BITES For the information contents of the following FITES and BITES see the contents of the corresponding messages in Recommendation Q.763: FITE A BITE 47 BITE 48 Connect Message (CON) BITE X BITE Y Answer Message (ANM) Initial Address Message (IAM
12、) Call Progress Message (CPG) Address Complete Message (ACM) Procedures not shown Procedures related to the following messages are not shown in the logic procedures because of no relevancy for interworking or no usage defined yet: BLO CGU FRJ UBA BLA CGUA GRA UBL CCR CQM GRS UCIC CFN CQR LPA USR CGB
13、 FAA OLM CGBA FAR RSC Indicated fault procedures P, (State 02) P, (State 02) P, (State 07) Continuity check failure Cross office check failure Failure to receive RES FIGURE 2fQ.627 Notes to outgoing Signalling System No. 7 (ISUP) 2 Recommendation Q.627 (03/93) ITU-T RECMNUQ-627 93 48b259L 0589348 76
14、7 g SS No. 7 (ISUP) Wait for info. FITE (A) -,.I SPITE 31 cont. check 02 T1141373Wa)2 FIGURE 3/Q.627 (sheet 1 of 8) Outgoing Signaiiing System Na 7 VP) Recommendation Q.627 (03/93) 3 m e Q SI I f - c 8 s P a 5 x O & 1 - s N W LL- W c. 8- 5 t E- cn 4 Recommendation Q.627 (03193) 4 C 2 4 9 5,491 ITU-T
15、 RECMN*Q.b27 93 4862591 0589150 315 7) successfil -1 Note NOTE - Digits should be forworded to the outgoing link as soon as they are available. Multi-digit SAMs should only be sent if more than one address digit in waiting. FIGURE 3/Q.627 (sheet 3 of 8) Outgoing Sigding System Na 7 (ISUP) Recommenda
16、tion Q.627 (03/93) 5 ITU-T RECflN*Q-b27 93 m 4862573 0589353 253 m C 10 o 2,395 0 BITE Z cl stop t, 0 stop t 1 D I_ o T1141400-gad05 FIGURE 3/Q.627 (sheet 4 of 8) Outgoing Signalling System Na 7 (ISUP) 6 Recommendation Q.627 (03/93) ITU-T RECMNtQ-627 93 48b2593 0589352 398 N c 8- -8- v) N W k v X w
17、-t- a E m e Co Recommendation Q.627 (03/93) 7 8 H 148 ITU-T RECMN*Q-b27 73 4862571 0587153 024 1 REL FIGURE 3jQ.627 (sheet 6 of 8) outgoing Signalling System Na 7 (ISUP) FITE 35 (User) 8 Recommendation Q.627 (03/93) ITU-T RECMN*Q*b27 93 D 48b259L 0589354 TbO cn I“ cnz J Recommendation Q.627 (03/93) 9 ITU-T RECMN*Q.b27 93 m 4862593 0589355 9T7 m I 10,12 13 16 13, $,16 l Release ail equipment - RLC t3 I - t 7 REL L stop t3 REL stop 1, RLC - (+) FIGURE 3/Q.627 (sheet 8 of 8) Outgoing Signalling System No. 7 (ISP) 10 Recommendation Q.627 (03/93)
