ITU-T Q 626-1988 Logic Procedures for Outgoing Signalling System R2《去话 R2信令系统的逻辑程序》.pdf

1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 1 TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU).4%27/2+).G0G0/&G0G03).!,).G0G03934%-3,/)#G0G002/#%$52%3G0G0&/2G0G0/54/).3).!,).G0G03934%-G0G02 )45G134G0G0RecommendationG0G01 (Extract from the “LUEG0“OOK)NOTES1 ITU-T Recommendation Q.626 was published in

2、Fascicle VI.6 of the Blue Book. This file is an extract from theBlue Book. While the presentation and layout of the text might be slightly different from the Blue Book version, thecontents of the file are identical to the Blue Book version and copyright conditions remain unchanged (see below).2 In t

3、his Recommendation, the expression “Administration” is used for conciseness to indicate both atelecommunication administration and a recognized operating agency. ITU 1988, 1993All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic ormec

4、hanical, including photocopying and microfilm, without permission in writing from the ITU.Fascicle VI.6 - Rec. Q.626 1Recommendation Q.626LOGIC PROCEDURES FOR OUTGOING SIGNALLING SYSTEM R2Supervisory timers for outgoing Signalling System R2t1= 12-18 s Recommendation Q.476, 5.5.1.1t2 24 s Recommendat

5、ion Q.476, 5.5.1.2Procedures not shownThe following procedures, not directly relevant to interworking, are not shown in the logic procedures:- Interrupt control procedures (analogue version).- Seizing acknowledgement (digital version).- Transmission fault procedures (digital version).-T1time-out and abnormal release sequence (analogue version).- Optional forward transfer.- Blocking and unblocking sequences.FIGURE 2/Q.626Notes to outgoing Signalling System R22 Fascicle VI.6 - Rec. Q.626Fascicle VI.6 - Rec. Q.62634Fascicle VI.6 - Rec. Q.626Fascicle VI.6 - Rec. Q.626 5