US Robotics 56K MESSAGE MODEM - QUICK FOR WINDOWS Guía de usuario descargar pdf (Pagina 47)

User’s Guide 43

throughput

The amount of actual user data transmitted per second without the

overhead of protocol information such as start/stop bits or frame

headers and trailers. Compare with characters per second.

V.8

The ITU-T standard specification that covers the initial handshaking

process.

V.17 fax

An ITU-T standard for making facsimile connections at 14,400 bps,

,12,000 bps, 9600 bps, 7200 bps.

V.21

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

An ITU-T standard for modem communications at 1200 bps, compatible

with the Bell 212A standard observed in the U.S. and Canada.

V.22 bis

An ITU-T standard for modem communications at 2400 bps. The

standard includes an automatic link negotiation fallback to 1200 bps

and compatibility with Bell 212A/V.22 modems.

V.27 ter

An ITU-T standard for facsimile operations that specifies modulation at

4800 bps, with fallback to 2400 bps.

V.29

An ITU-T standard for facsimile operations that specifies modulation at

9600 bps, with fallback to 7200 bps.

V.32

An ITU-T standard for modem communications at 9600 bps and 4800

bps. V.32 modems fall back to 4800 bps when line quality is impaired.

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US Robotics 56K MESSAGE MODEM - QUICK FOR WINDOWS Guía de usuario Pagina 47