The operator panel contains four keys,
five green lights and a display for status
The following operations can be
controlled from the operator panel, from
a DTE or from NetView:
7858 Professional Modem Specifications
Information on the IBM 7858 Professional Modem is available at:
•Machine information display
•Line quality indicators.
Enhanced system security
The 7858 can be password-protected
to disable configuration changes. You
Desktop unit with self-contained power supply
Width: 210 mm (8.27 in.)
Depth: 150 mm (5.91 in.)
Height: 44 mm (1.73 in.)
Weight: 1.2 kg (2.65 lb)
•Temperature: 0° to 40°C (32° to 104°F)
•Relative humidity: 8 to 80% noncondensing
•Class B EMC compliant
Input voltage: 100 to 127 or 200 to 240 volts nominal
Frequency: 50 and 60 Hz. nominal
Input power: 5 W
Comes with power cord, telephone line cables and a Guide to Operations .
Operational firmware can be upgraded by download transfer to Flash Memory.
Can be managed from a centralized NetView console through LPDA-2 commands.
Power-on self test
ITU V.54 loop tests can be invoked from the modem front panel or an attached DTE.
•Local analog test loop (ITU loop 3), including self-test facility
•Digital test loop (ITU loop 2)
•Remote controlled digital test loop (ITU loop 2), including self-test facility.
can also associate password protec-
tion to stored telephone numbers to
reject incoming calls.
The call-back feature enables you to
link a procedure to stored telephone
numbers. With this feature, for example,
a modem receiving a call can discon-
nect either immediately after the
answer tone is sent, or after password
checking. The modem can then call
back a pre-stored number or one
provided by the calling party.