US Robotics COURIER Manuel d'utilisateur télécharger pdf (Page 289)

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101

U.S. Robotics I-modem Command Reference

Glossary • Page G-31

online fallback

A feature that allows high-speed error-control modems to monitor line quality and fall

back to the next lower speed if line quality degrades. The modems fall forward as line

quality improves.

Online mode

When the I-modem is in Online mode, it is connected over telephone lines with another

device.

originate mode

A state in which the modem transmits at the predeÞned low frequency of the communica-

tions channel and receives at the high frequency. The transmit/receive frequencies are the

reverse of the called modem which is in Answer mode

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US Robotics COURIER Manuel d'utilisateur Page 289

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