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Glossary
Glossary-93810-A2-GB30-30 September 1998
Sync Dial A factory preset configuration area containing configuration options most often used in
synchronous dial networks.
synchronous transmission Data transmission that is synchronized by timing signals. Characters are sent at a fixed
rate. This type of transmission is more efficient than asynchronous transmission.
tone dialing One of two dialing methods, in which telephone numbers are sent as tones across the
telephone lines.
Top-Level menu The very top of the menu tree that displays modem status and all Top-Level menu
branches.
training A process where two modems try to establish a connection over the VF line.
UL Underwriter’s Laboratories, Inc.
UNIX Dial A factory preset configuration area containing the configuration options most often used
in a UNIX dial network.
USOC Universal Service Ordering Codes.
VF Voice Frequency. The part of the audio frequency range used to transmit voice sound
(usually 300 Hz to 3400 Hz). This band is used by the modem for its modulated signal.
XOFF A character that tells the DTE or modem to stop transmitting data.
XON A character that tells the DTE or modem to start or resume transmitting data.