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Modems
Modems are devices that modulate an analog carrier signal to encode digital information.
Industry: Network hardware
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Modems
V.110
Network hardware; Modems
V.110 is a fixed-frame rate adaption that subdivides the ISDN channel into a single speed data channel.
V.120
Network hardware; Modems
V.120 allows one B-channel to carry multiple subrate channels in a succession of statistically multiplexed frames.
V.17 Fax
Network hardware; Modems
An ITU-T standard for making facsimile connexions at 14,400 bps, 12,000 bps, 9,600 bps, and 7,200 bps.
V.21
Network hardware; Modems
An ITU-T standard for modems operating in asynchronous mode at speeds up to 300 bps, full-duplex, on public switched telephone networks.
V.22
Network hardware; Modems
An ITU-T standard for modem communications at 1,200 bps, compatible with the Bell 212A standard observed in the U.S. and Canada.
V.22 bis
Network hardware; Modems
An ITU-T standard for modem communications at 2,400 bps. The standard includes an automatic link negotiation fallback to 1,200 bps and compatibility with Bell 212A/V.22 modems.
V.27 ter
Network hardware; Modems
An ITU-T standard for facsimile operations that specifies modulation at 4,800 bps, with fallback to 2,400 bps.
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