1、 International Telecommunication Union ITU-T V.150.1TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1(01/2005) SERIES V: DATA COMMUNICATION OVER THE TELEPHONE NETWORK Interworking with other networks Modem-over-IP networks: Procedures for the end-to-end connection of V-series DCEs Amendmen
2、t 1: Modification to SSE reason identifier codes to support voice band data and text relay ITU-T Recommendation V.150.1 (2003) Amendment 1 ITU-T V-SERIES RECOMMENDATIONS DATA COMMUNICATION OVER THE TELEPHONE NETWORK General V.1V.9 Interfaces and voiceband modems V.10V.34 Wideband modems V.35V.39 Err
3、or control V.40V.49 Transmission quality and maintenance V.50V.59 Simultaneous transmission of data and other signals V.60V.99 Interworking with other networks V.100V.199 Interface layer specifications for data communication V.200V.249 Control procedures V.250V.299 Modems on digital circuits V.300V.
4、399 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. V.150.1 (2003)/Amd.1 (01/2005) i ITU-T Recommendation V.150.1 Modem-over-IP networks: Procedures for the end-to-end connection of V-series DCEs Amendment 1 Modification to SSE reason identifier codes to support vo
5、ice band data and text relay Summary This amendment to ITU-T Rec. V.150.1 adds new code definitions to the SSE Protocol Reason Identifier Codes (RIC) contained in Table 12/V.150.1, which are intended to support the SSE protocol in ITU-T Rec. V.152 and the Text Relay. Source Amendment 1 to ITU-T Reco
6、mmendation V.150.1 (2003) was approved on 8 January 2005 by ITU-T Study Group 16 (2005-2008) under the ITU-T Recommendation A.8 procedure. ii ITU-T Rec. V.150.1 (2003)/Amd.1 (01/2005) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of te
7、lecommunications. 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 Tele
8、communication Standardization Assembly (WTSA), 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 WTSA Resolution 1. In some a
9、reas 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 recognized o
10、perating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “sha
11、ll“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the pr
12、actice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation deve
13、lopment process. As of the date of approval of this Recommendation, ITU had received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore
14、 strongly urged to consult the TSB patent database. ITU 2005 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. V.150.1 (2003)/Amd.1 (01/2005) 1 ITU-T Recommendation V.150.1 Modem-over-IP networks: Proc
15、edures for the end-to-end connection of V-series DCEs Amendment 1 Modification to SSE reason identifier codes to support voice band data and text relay This amendment defines additional SSE Reason Identifier codes. These new codes are intended to be used in Voice Band Data (ITU-T Rec. V.152) and Tex
16、t Relay. Replace Table 12/V.150.1 with the following version. The new codes are underlined. Table 12/V.150.1 SSE RIC codes Name Code (decimal) Additional informational content Null 0 None CM 1 Available modulation modes as indicated in the CM sequence JM 2 Available modulation modes as indicated in
17、the JM sequence AA 3 None AC 4 None USB1 5 None SB1 6 None S1 7 None V.21 Ch2 8 None V.21 Ch1 9 None V.23 High channel 10 None V.23 Low channel 11 None Tone (2225 Hz) 12 None V.21 Ch2 HDLC Flags 13 None Indeterminate signal 14 None Silence 15 None CNG 16 None Voice 17 None Time-Out 18 Indicates that
18、 a timeout has occurred. The timeout event and format is defined in Table 14. p State Transition 19 None Cleardown 20 Indicates reason for clear down. Format is defined in Table 15. ANS/CED (2100 Hz) 21 None ANSam 22 None 2 ITU-T Rec. V.150.1 (2003)/Amd.1 (01/2005) Table 12/V.150.1 SSE RIC codes Nam
19、e Code (decimal) Additional informational content /ANS 23 None /ANSam 24 None QC1a 25 None QC1d 26 None QC2a 27 None QC2d 28 None Cre 29 None CRd 30 None TIA-825A (45.45 bit/s) 31 None at present (For further study) TIA-825A (50 bit/s) 32 None at present (For further study) EDT (European Deaf Teleph
20、one) 33 None at present (For further study) Bell 103 modem 34 None at present (For further study) V.21 text telephone, T.50 encoding (not V.18 text telephone) 35 None at present (For further study) V.23 text (Minitel) 36 None at present (For further study) V.18 text telephone, T.140 encoding 37 None
21、 at present (For further study) DTMF based Text Relay (Annex B/V.18) 38 None at present (For further study) CTM 39 None at present (For further study) Reserved 40-127 Reserved for use by ITU-T Vendor Specific 128-255 For use by vendor Printed in Switzerland Geneva, 2005 SERIES OF ITU-T RECOMMENDATIO
22、NS Series A Organization of the work of ITU-T Series D General tariff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital systems and networks Series H
23、 Audiovisual and multimedia systems Series I Integrated services digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series K Protection against interference Series L Construction, installation and protection of cables and other elemen
24、ts of outside plant Series M Telecommunication management, including TMN and network maintenance Series N Maintenance: international sound programme and television transmission circuits Series O Specifications of measuring equipment Series P Telephone transmission quality, telephone installations, l
25、ocal line networks Series Q Switching and signalling Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks, open system communications and security Series Y Global information infrastructure, Internet protocol aspects and next-generation networks Series Z Languages and general software aspects for telecommunication systems
