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- H-NET H-NET H-NET H-NET H-NET H-NET H-NET H
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- E ** H-Net Magazine ** E
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- H Volume One, Issue 1, File #11 of 20 H
- N N
- E CCITT Recommendations by Zed Haytey. E
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- H-NET H-NET H-NET H-NET H-NET H-NET H-NET H
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- CCITT RECOMENDATIONS
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- V series - covering data transmissions over telephone lines
-
- V1 Equivalence between binary notation stmbols and the significant cond-
- itions of a two conditioned code
- V2 Power levels for data transmission over telephone lines
- V3 International Alphabet No.5 (ASCII)
- V4 General structure of signals of International Alphabet No.5 code for
- data transmissions over public telephone networks
- V5 Standardisation of modulation rates and data signalling rates for
- synchronoous data transmission in general switched network
- V6 Ditto, on leased telephone type circuits
- V7-9 Not assigned
- V10 Electrical characteristics for unbalanced double current interchange
- circuits for general use with integrated circuits
- V11 Ditto, for balanced double current interchange circuits
- V12 Not assigned
- V13 Answerback simulator
- V14 Not assigned
- V15 Use of acoustic coupling for data transmission
- V16 Recommendation for modems for transmission of medical analogue data
- V19 Modems for parallel data transmissions using telephone signalling
- frequencies
- V20 Parallel data transmission modems standardised for universal use in
- the general switched network
- V21 300 Baud modem standardised for use in the switched telephone network
- V22 1200 Baud full duplex 2 wire modem standardised for use in the
- general switched telephone network
- V22b 2400 Baud full duplex 2 wire modem standardised for use in the
- general switched telephone network
- V23 600/1200 baud modem standardised for use in the general switched
- telephone network
- V24 List of definitions for interchange circuits between data terminal
- equipment and data circuit terminating equipment (i.e. modem)
- V25 Automatic calling and/or answering equipment on the general switched
- telephone network
- V25b Bit synchronous auto dialling protocol for use over PSTN
- V26 2400 baud modem for use on 4 wire point to point circuits
- V26b 2400/1200 baud modem standardised for use in the general switched
- telephone network
- V27 4800 baud modem for leased circuits
- V27b 4800/2400 modem with automatic adaptive equaliser standardised for
- use on leased circuits
- V27t 4800/2400 modem standardised for use on the general switched
- telephone network
- V28 Electrical characteristics for unbalanced double current interchange
- circuits
- V29 9600 baud modem for use on leased circuits
- V30 Not assigned
- V31 Electrical characteristics for single current interchange circuits
- controlled by contact closure
- V32-4Not Assigned
- V35 Data transmission at 48 kilobits per second using 60-108KHz group
- band circuits
- V36 Modems for synchronous data transmission using 60-108kHz group band
- circuits
- V37-9Not assigned
- V40 Error indication with electromechanical equipment
- V41 Code independent error correction system
- V42-9Not assigned
- V50 Standard limits for transmission quality of data transmission
- V51 Organisation of the maintenance of international telephone type
- circuits for data transmission
- V52 Characteristics of distortion and error rate measuring apparatus for
- data transmission
- V53 Limits for the maintenance of telephone type circuits used for data
- transmissions
- V54 Loop test device for modems
- V55 Specification for an impulsive noise measuring instrument for
- telephone type circuits
- V56 Comparative test for modems for use over telephone type circuits
- V57 Comprehensive test set for high signalling rates.
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- by Zed Haytey 1990