
3460 Fast’R
C-14
Figure C-3. Card Modem Front Panels
Status LEDs
Cards and stand-alone modems have the following front panel
indicators. On a dual-modem card, each modem has a set of indicators.
Status LED Displa y s
LED
Description
MR
Modem Ready/
Test Mode
•
On
: modem is ready to interwork with computer
•
Flashing
: Modem is in V.54 test mode
TR
Transmit/Receive
(Data Terminal
Ready)
On
: computer is asserting DTR (Circuit 108) to modem
Two-Wire Leased- Line and
Four-Wire Leased-Line/
Modem A Off-Line
Configuration Button
Modem A Status LEDs
Modem Status LEDs
Modem B Off-Line
Configuration Button
MR
TR
OH
CD
RD
SD
MR
MODEM A
OLC
OLC
MODEM B
TR
OH
CD
RD
SD
3460
Modem B Status LEDs
MR
TR
OH
CD
RD
SD
3460
Dial-Line Dual-Modem Card
Single-Modem Card
Off-Line
Configuration Button
OLC
With Dial-Line Alternative
Summary of Contents for 3460
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