1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.310-Q.332 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (11/1988) SERIES Q: SWITCHING AND SIGNALLING Specifications of Signalling System R1 ITU-T Recommendation Q.310-Q.332 (Formerly CCITT Recommendation) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND S
2、IGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 Basic Recommendations Q.4Q.9 Numbering plan and dialling procedures in the international service Q.10Q.11 Routing plan for international service Q.12Q.19 General Recommendations
3、 relative to signalling and switching systems (national or international) Q.20Q.34 Tones for use in national signalling systems Q.35Q.39 General characteristics for international telephone connections and circuits Q.40Q.47 Signalling for satellite systems Q.48Q.49 Signalling for circuit multiplicati
4、on equipment Q.50Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 Methodology Q.60Q.67 Basic services Q.68Q.79 Supplementary services Q.80Q.99 CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 General clauses Q.100Q.109 Transmission clauses for signalling Q.110Q.114 Contr
5、ol of echo suppressors Q.115 Abnormal conditions Q.116Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 Q.120Q.249 Specifications of Signalling System No. 4 Q.120Q.139 Specifications of Signalling System No. 5 Q.140Q.179 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 Q.250Q.309 SPECIFICATIONS OF
6、 SIGNALLING SYSTEM R1 Q.310Q.399 SPECIFICATIONS OF SIGNALLING SYSTEM R2 Q.400Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 General considerations Q.600Q.609 Logic procedures Q.610Q.697 Interworking of Signalling Systems No. 7 and No. 6 Q.698 Interworking between Di
7、gital Subscriber Signalling System No. 1 and Signalling System No. 7 Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 Q.850Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATELLITE MOBILE SYSTEMS Q.1100Q.119
8、9 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CALL CONTROL (BICC) Q.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 For further details, please refer to the list of ITU-T Recommendations. Signallin
9、g System R1 (1988) i ITU-T Recommendations Q.310-Q.332 Specifications of Signalling System R1 Summary System R1 may be applied for automatic and semi-automatic operation of one-way and both-way circuits, within an international region (world numbering zone). When utilized in an integrated world numb
10、ering zone (e.g. Zone 1) the numbering and routing plans and operating facilities of that zone should apply. The system is applicable to all types of circuits (except TASI derived circuits) meeting CCITT transmission standards, including satellite circuits. Source ITU-T Recommendations Q.310-Q.332 w
11、as prepared by CCITT Study Group XI (1985-1988) and approved by WTSC on 18 November 1988. Those texts were originally published in Blue Book, Fascicle VI.4. ii Signalling System R1 (1988) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field o
12、f telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T 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 World
13、Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSC Resolution 1. In
14、some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recogn
15、ized operating agency. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendations may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Int
16、ellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendations, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendati
17、ons. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2002 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanic
18、al, including photocopying and microfilm, without permission in writing from ITU. Signalling System R1 (1988) iii CONTENTS Part I Specifications of Signalling System R1 Rec. No. Page INTRODUCTION Principles of Signalling System R1 1 SECTION 1 Definition and function of signals Q.310 1. Definition an
19、d function of signals 3 SECTION 2 Line signalling Q.311 2.1 2600 Hz line signalling. 5 Q.312 2.2 2600 Hz line signal sender (transmitter). 6 Q.313 2.3 2600 Hz line signal receiving equipment . 7 Q.314 2.4 PCM line signalling 9 Q.315 2.5 PCM line signal sender (transmitter) 9 Q.316 2.6 PCM line signa
20、l receiver 11 Q.317 2.7 Further specification clauses relative to line signalling 12 Q.318 2.8 Double seizing with both-way operation 12 Q.319 2.9 Speed of switching in international exchanges. 13 SECTION 3 Register signalling Q.320 3.1 Signal code for register signalling 14 Q.321 3.2 End-of-pulsing
21、 conditions Register arrangements concerning ST signal 15 Q.322 3.3 Multifrequency signal sender . 16 Q.323 3.4 Multifrequency signal receiving equipment . 16 Q.324 3.5 Analysis of address information for routing. 17 Q.325 3.6 Release of registers. 18 Q.326 3.7 Switching to the speech position 18 SE
22、CTION 4 Testing arrangements Q.327 4.1 General arrangements . 19 Q.328 4.2 Routine testing of equipment (local maintenance) . 19 Q.329 4.3 Manual testing 20 Q.330 4.4 Automatic transmission and signalling testing . 20 Q.331 4.5 Test equipment for checking equipment and signals 21 Annex A to the spec
23、ifications of signalling system R1 23 Part II Interworking of Signalling System R1 with other standardized systems Q.332 5. Interworking . 25 Signalling System R1 (1988) 1 PART I SPECIFICATIONS OF SIGNALLING SYSTEM R1 INTRODUCTION PRINCIPLES OF SIGNALLING SYSTEM R1 General The development of new exc
24、hanges, especially those utilizing stored programme control, has introduced new concepts in the division of functions between various components of signalling and switching systems. To allow the maximum freedom in incorporating new concepts which can contribute to the overall economy and efficiency
25、of the system, the requirements as covered in this specification are for the combination of equipments necessary to provide a function. For example, the requirements for line signal receiving equipment as given here may be met by various subdivisions of functions between signal receiver, trunk relay
26、 sets and stored programme control. System R1 may be applied for automatic and semi-automatic operation of one-way and both-way circuits, within an international region (world numbering zone). When utilized in an integrated world numbering zone (e.g. Zone 1) the numbering and routing plans and opera
27、ting facilities of that zone should apply. The system is applicable to all types of circuits (except TASI derived circuits)1)meeting CCITT transmission standards, including satellite circuits. The signalling equipment used in System R1 consists of two parts: a) line signalling for line or supervisor
28、y signals; and b) register signalling for address signals. a) Line signalling 1) 2600 Hz signalling Continuous tone type in-band line-signalling is used for the link-by-link transmission of all supervisory signals except the ring-forward (forward-transfer) signal which is a spurt signal. A single fr
29、equency, 2600 Hz, is used in each direction of the 4-wire transmission path, the presence or absence of this frequency indicates a specific signal dependent upon when it occurs in the signalling sequence and in certain cases upon its duration. When the circuit is idle, a low level signalling tone is
30、 continuously present in both directions. 2) PCM signalling The 2600 Hz line signalling described in 1) is not normally applied to the speech paths of circuits working on PCM systems unless the PCM channels are connected in cascade with analogue channels to form a circuit. The signalling on PCM syst
31、ems in the North American region is channel associated, in-slot, providing two signalling channels per speech channel, and utilizing bit stealing of the eighth bit of each channel every sixth frame. _ 1) Register signalling can be made compatible with TASI by providing a TASI locking tone. 2 Signall
32、ing System R1 (1988) b) Register signalling Link-by-link multifrequency (MF) in-band pulse signalling is used for the transmission of address information. The signalling frequencies are 700 Hz to 1700 Hz, in 200 Hz steps, and combinations of two, and two only, determine the signal. The address infor
33、mation is preceded by a KP signal (start-of-pulsing) and terminated by an ST signal (end-of-pulsing). Either en bloc2), or en bloc overlap2), or overlap sending may apply. This register signalling arrangement is used extensively with other in-band and out-band line signalling systems. Compandors may
34、 affect signalling, particularly short pulse compound register signals, due to pulse length distortion and the production of intermodulation frequencies. By virtue of the link-by-link signalling and the adopted duration of register and line signal pulses, System R1 functions correctly in the presenc
35、e of compandors designed in accordance with CCITT recommendations. _ 2)See Recommendation Q.151, Note to 3.1.1 for an explanation of these terms. Signalling System R1 (1988) 3 SECTION 1 DEFINITION AND FUNCTION OF SIGNALS Recommendation Q.310 Specifications of Signalling System R1 1. DEFINITION AND F
36、UNCTION OF SIGNALS1)1.1 connect (seizing) signal (sent in the forward direction) This line signal is transmitted at the beginning of a call to initiate circuit operation at the incoming end of the circuit to busy the circuit and to seize equipment for switching the call. 1.2 delay-dialling signal (s
37、ent in the backward direction) This line signal is transmitted by the incoming exchange following the recognition of the connect (seizing) signal to verify receipt of the connect (seizing) signal and to indicate that the incoming register equipment is not yet attached or ready to receive address sig
38、nals. 1.3 start-dialling (proceed-to-send) signal (sent in the backward direction) This line signal is sent from the incoming exchange subsequent to the sending of a delay-dialling signal to indicate that the incoming register equipment has been connected and is ready to receive address signals. 1.4
39、 KP (start-of-pulsing) signal (sent in the forward direction) This register signal is sent subsequent to the recognition of a start-dialling signal and is used to prepare the incoming multifrequency register for the receipt of subsequent interregister signals. 1.5 address signal (sent in the forward
40、 direction) This register signal is sent to indicate one decimal element of information (digit 1, 2, ., 9 or 0) about the called partys number. For each call a succession of address signals is sent. 1.6 ST (end-of-pulsing) signal (sent in the forward direction) This register signal is sent to indica
41、te that there are no more address signals to follow. The signal is always sent in semi-automatic as well as automatic working. _ 1)In this part the North American designation for line signals is used. The designation of the signal in System No. 5 which most nearly corresponds to a particular North A
42、merican signal is shown in parentheses. There is not always exact correspondence in function, e.g. the ring-forward signal can only be effective when a connection has been established through an incoming operator. 4 Signalling System R1 (1988) 1.7 answer signal (sent in the backward direction)2), 3)
43、This line signal is sent to the outgoing exchange to indicate that the called party has answered. In semi-automatic working, the signal has a supervisory function. In automatic working, it is used: to start metering the charge to the calling subscriber; to start the measurement of call duration for
44、international accounting purposes, if this is desired. 1.8 hang-up (clear-back) signal (sent in the backward direction)2) This line signal is sent to the outgoing exchange to indicate that the called party has cleared. In the semi-automatic service it performs a supervisory function. In automatic wo
45、rking, arrangements are made to clear the connection, stop the charging, and stop the measurement of call duration if within 10 to 120 seconds4)after recognition of the hang-up signal, the calling subscriber has not cleared. Clearing of the connection should preferably be controlled from the point w
46、here the charging is carried out. 1.9 ring-forward (forward-transfer) signal (sent in the forward direction) This line signal is initiated by an operator to recall an operator at a point further ahead in the connection. 1.10 disconnect (clear-forward) signal (sent in the forward direction) This line
47、 signal is sent in the forward direction at the end of a call when: a) in semi-automatic working, the operator at the outgoing exchange withdraws the plug from the jack, or when an equivalent operation is performed; b) in automatic working, the calling party hangs up, or when the time-out period of
48、10 to 120 seconds as discussed in 1.8 above occurs. 1.11 Diagrams showing signal sequence Typical sequences of signals in semi-automatic and automatic working are shown in Annex A to these Specifications of Signalling System R1. _ 2) Notes on the answer and hang-up (clear-back) signals. See correspo
49、nding notes in Recommendation Q.120, 1.8, Volume VI-2 of the Green Book. 3)See Recommendation Q.27 for the actions to be taken to assure that answer signals, both national and international, are transmitted as quickly as possible. 4)In word numbering Zone 1, 13 to 32 seconds is used. Signalling System R1 (1988) 5 SECTION 2 LINE SIGNALLING Recommendation Q.311 2.1 2600 HZ LINE SIGNALLING The line-signal coding arrangement is based on the application and removal of a
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