1、STD-ITU-T RECMN J-LL3-ENGL 3998 = 4862593 0649635 081 INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU J.113 (03198) SERIES J: TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDIA SIGNALS Interactive systems for digital television distribution D
2、igital video broadcasting interaction channel through the PSTNIISDN ITU-T Recommendation J. 1 13 (Previously CCITT Recommendation) ITU-T J-SERIES RECOMMENDATIONS TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDLA SIGNALS General Recommendations General specifications for analogue sound
3、-programme transmission Performance characteristics of analogue sound-programme circuits Equipment and lines used for analogue sound-programme circuits Digital encoders for analogue sound-programme signals Digital transmission of sound-programme signals Circuits for analogue television transmission
4、Analogue television transmission over metallic lines and interconnection with radio-relay links Digital transmission of television signals Ancillary digital services for television transmission Onerational reauirements and methods for television transmission J.l-J.9 J. 10-J. 19 J.20-J.29 J.30-J .39
5、J.40-J .49 J.50-J.59 J .60-J .69 J.70-J.79 J.80-J.89 J.90-J.99 J. 100-J. 109 Interactive systems for all users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the cu
6、rrently valid ITU-T Recommendations is regularly published. ITU-T Recommendation J.110 (1997), Basic principles for a worldwide common family of systems for the provision of interactive televkion services. ITU-T Recommendation J. 1 1 1 (1 998), Network independent protocols for interactive systems.
7、ITU-T Recommendation I.3xx, ISDN - Network aspects. ITU-T Recommendation 4.92 M.441 ITU-T Recommendation Q.93 1A.451 control. ITU-T Recommendations 1.430,1.43 1, ISDN -physical layer. 1997), ISDN user-network interface - Data link layer specifcation. (1998), ISDN user-network interface La-ver 3 spec
8、ijcation for basic call ITU-T Recommendation G.960 (1993), Access digital section for ISDN basic rate access. ITU-T Recommendation (3.961 (1993), Digital h-ansmission system on metallic local lines for ISDN basic rate access. ITU-T Recommendation 1.414 (1997), Overview of Recommendations of Layer 1
9、for ISDN and B-ISDN customer accesses. IT-T Recommendation 1.1 12 (1993), Vocabulary ofterms for ISDN. Definitions The definitions in Recommendation J.110 i apply. 4 Abbreviations The abbreviations in Recommendation J.110 i apply. Recommendation 5.113 (03198) 1 5 Protocol stack and system models 5.1
10、 Protocol stack model The protocol stack model used for the purposes of this Recommendation consists of the following layers: Physical layer: where all the physical (electrical) transmission parameters are defined - network dependent. Transport layer: defines ail the relevant data structures and com
11、munication protocols like data containers, etc. - network dependent. Application layer: is the interactive application software and runtime environments - network independent. See Figure 1. Layer structure for generic system reference model Proprietary layers Higher medium layers Access mechanism Pa
12、cket Structure Modulation Channel Coding Freq. Range Filtering Equalization Power Network independent protocols Network dependent protocols T0906370-98/dO 1 Figure UJ.113 - Layer structure for generic system reference model This Recommendation describes the network dependent protocols within the tra
13、nsport and physical layers for the PSTNASDN. The network independent protocols are described in Recommendation J.111 121 (to layer 4 of the OS1 reference model typically). 5.2 System modeloverview Refer to Recommendation J. 110 i. 2 Recommendation J.113 (03/98) STD-ITU-T RECMN J-LL3-ENGL 1998 m 4862
14、591 0649623 158 m 6 Interaction channel for PSTN 6.1 PSTN requirement The PSTN shall provide a bidirectional communication path between interfaces A, (PSTNhteractive network adaptor interface) and Ab (PSTNhteractive interface module interface) of the system model of Figure 2/J. 1 10 i. 6.2 PSTN inte
15、rfaces requirement Both the interactive network adaptor at interface A, and the interactive interface module at interface Ab shall comply with the physical and transport layer functionality requirements relevant to the national PSTN service provider concerned. 7 Interaction channel for ISDN 7.1 ISDN
16、 requirement The ISDN shall provide a bidirectional communication path between interfaces A, (ISDNAnteractive network adaptor interface) and Ab (ISDNAnteractive interface module interface) of the system model of Figure 2/J.110 i. For the purposes of this Recommendation, it is assumed that the ISDN c
17、omplies with Recommendation I.3xx 3. 7.2 ISDN interfaces requirement The physical and transport layer functions of the interactive network adaptor at interface A, and the interactive interface module at interface Ab shall comply with Recommendations 1.430, i.431 4, Q.921A.441 SI, Q.931A.451 161, G.9
18、60 7, G.961 8, 1.414 9 and 1.112 lo. Recommendation 5.113 (03/98) 3 STD-ITU-T RECMN J-113-ENGL 1998 4862591 Ob49624 094 Series A Series B Series C Series D Series E Series F Series G Series H Series I Series J Series K Series L Series M Series N -Series O Series P Series Q Series R Series S Series T
19、 Series U Series V Series X Series Y Series Z ITU-T RECOMMENDATIONS SERIES Organization of the work of the ITU-T Means of expression: definitions, symbols, classification General telecommunication statistics General tariff principles Overall network operation, telephone service, service operation an
20、d human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia systems Integrated services digital network Transmission of television, sound programme and other multimedia signals Protection against interference Constr
21、uction, installation and protection of cables and other elements of outside plant TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and leased circuits Maintenance: international sound programme and television transmission circuits Specificati
22、ons of measuring equipment Telephone transmission quality, telephone installations, local line networks Switching and signalling Telegraph transmission Telegraph services terminal equipment Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communication Global information infrastructure Programming languages Printed in Switzerland Geneva, 1998
