3Com AccessBuilder 980/000048/001, User Manual

Page: 39 / 60

Physical Description A - 3
Protocols
Extended AT command set. Non-volatile memory. 5 preset factory, 2
user defined configurations and one power-up configuration. 20
stored telephone numbers. AT or V.25bis asynchronous, bisynchronous
and HDLC synchronous commands are entered via the DTE interface.
ASCII or EBCDIC character set used in V.25bis command mode.
Autoanswer
CCITT V.25 compliant.
Busy
Busy out via AT command or DTR.
Disconnect
Call cleared selectable on loss of DTR; and/or no carrier for n seconds;
and/or no data for n seconds; and/or a disconnect request is received
from the remote modem in error correction.
Test Functions
Local analogue loop, local digital loop, or remote digital loop available
using AT commands.
Physical Description
Power
16V ac, 47 to 63 Hz, 1A max. Typical power consumption 11 Watts.
Environment
Temperature 0 to 40 degrees centigrade operating. -50 to 70 degrees
centigrade storage.
Relative humidity 5% to 95% non-condensing.
Altitude to 3000 meters.