Modems

Modems

Modems are devices that modulate an analog carrier signal to encode digital information.

Industry: Network hardware

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Modems

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.

V.29

Network hardware; Modems

An ITU-T standard for facsimile operations that specifies modulation at 9,600 bps, with fallback to 7,200 bps.

V.32

Network hardware; Modems

An ITU-T standard for modem communications at 9,600 bps and 4,800 bps. V.32 modems fall back to 4,800 bps when line quality is impaired.

V.32 bis

Network hardware; Modems

An ITU-T standard that extends the V.32 connection range: 4,800, 7,200, 9,600, 12,000, and 14,400 bps. V.32 bis modems fall back to the next lower speed when line quality is impaired, fall back ...