Business telecommunications and IT systems

The V-series Recommendations from the ITU-T regarding data/communications over the switched telephone network.

Equivalence between binary notation symbols and the significant conditions of a two condition code.

Electrical characteristics for unbalanced double-current interchange circuits for general use with integrated circuit equipment in the field of data communications.

The same as V.10, but for balanced double-current interchange circuits.

Equivalent to I.463.

Rate adaption standard.

Answerback unit simulator.

Use of acoustic coupling for data transmission.

Recommendation for modems for transmission of medical analogue data.

14,400kbit/s fax transmission.

Modems for parallel data transmission using telephone signalling frequencies.

Power levels for data transmission over telephone lines.

Parallel data transmission modems standardised for universal use in the general switched network.

300 baud modem standardised for use in the switched telephone network.

1200bit/s duplex 2 wire modem standardised for use in the general switched telephone network.

2400bit/s duplex 2 wire modem standardised for use in the general switched telephone network.

600/1200bit/s modem standardised for use in the general switched telephone network.

i)  The list of definitions of interchange circuits between DTE and data circuit terminating equipment, such as a modem.

ii)  The telecommunications term for an RS232 port.

Automatic calling and/or answering equipment on the general switched telephone network.

Automatic calling and/or answering equipment on the general switched telephone network using the 100 series interchange circuits.