V.1 Equivalence between binary notation
symbols and the significant conditions of a two-condition code.
V.2 Power levels for data transmission over telephone
lines.
V.3 International Alphabet No. S.
V.4 General structure of signals of International Alphabet
No. 5 code.
V.5 Standardization of data signaling rates for synchronous
data transmission in the general switched telephone network.
V.6 Standardization of data signaling rates for synchronous
data transmission on leased telephone-type circuits.
V.10 Electrical characteristics for unbalanced
double-current interchange circuits for general use with integrated circuit equipment in
the field of data communications.
V.1 1 Electrical characteristics for balanced
double-current interchange circuits for general use with integrated circuit equipment in
the field of data communications.
V.15 Use of acoustic coupling for data transmission.
V.16 Medical analog data transmission modems.
V.19 Modems for parallel data transmission using telephone
signaling frequencies.
V.20 Parallel data transmission modems standardized for
universal use in the general switched telephone network.
Sovereign
Grace Church Delaware
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V.21 200-baud modem standardized for use in the general
switched telephone network.
V.22 1.2 Kbps full-duplex 2-wire modem standardized for use
in the general switched telephone network.
V.22 bis 2.4 Kbps full-duplex 2-wire modem standardized for
use in the general switched telephone network with 1.2 Kbps fall-back.
V.23 600/1,200-baud modem standardized for use in the
general switched telephone network.
V.24 List of definitions for interchange circuits between
data-terminal equipment and data circuit-terminating equipment.
V.25 Automatic calling and/or answering on the general
switched telephone network, including disabling or echo-suppressors on manually
established calls.
V.25 bis Bit synchronous auto-dialing protocol for use over
PSTN.
V.26 2.4 Kbps modem standardized for use on four-wire
leased circuits.
V.26 bis 2.4 1.2 Kbps modem standardized for use in the
general switched telephone network.
V.27 4.8 Kbps modem standardized for use on leased circuits
V.27 bis 4.8 Kbps modem with automatic equalizer
standardized for use on leased circuits.
V.27 ter 4.8 2.4 Kbps modem standardized for use in the
general switched telephone network
V.28 ELECTRICAL characteristics for unbalanced
double-current interchange circuits.
V.29 9.6 Kbps modem for use on leased circuits.
V.31 Electrical characteristics for single current
interchange circuits controlled by contact closure.
V.32 9.6 Kbps full-duplex 2-wire modem standardized for use
in the general switched telephone network with 4.8 Kbps fall back.
V.33 14.4 Kbps full-duplex over 4-wire leased circuits.
V.35 Data transmission at 48 Kbps using 60 to 108 kHz group
band circuits.
V.36 Modems for synchronous data transmission using 60-108
kHz group band circuits.
V.40 Error indication with electromechanical equipment.
V.41 Code-independent error control system.
V.42 Covers error-checking protocols for use on standard
dial-up lines. This will enable error-free data transfer at speeds up to 19.2 Kbps without
the need for leased lines.
V.50 Standard limits for transmission quality of data
transmission.
V.51 Organization of the maintenance of international
telephone type circuits used for data transmission.
V.52 Characteristics of distortion and error-rate measuring
apparatus for data transmission.
V.53 Limits for maintenance of telephone-type circuits used
for data transmission.
V.54 Loop test devices for modems.
V.55 Specification for an impulsive noise measuring
instrument for telephone type circuits.
V.56 Comparative tests of modems for use over
telephone-type circuits.
V.57 Comprehensive data test set for high data
signaling rates.
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