Back Panel Connector Description - 3Com OfficeConnect 3C892A User Manual

Back Panel Connector
Description
Table 4 Front Panel LED Indicator Definitions
LED Color
ISDN Green
OK
B1/B2 Amber or
Green
Tx Green
Coll Amber
Ports1—4 Green
The back panel provides the following components.
10-18 VDC
0.8 A MAX
Power
Connector
Figure 12 ISDN LAN Modem Back Panel
From left to right the back panel consists of the following.
Power: Connect the power module cable to this port.
Reset: Press this button for no more than a couple of seconds if you have to
reset the unit. This causes the software to restart while maintaining your
configuration profile which includes service provider information and ISDN line
telephone numbers.
Two Analog Telephone Ports: You can connect analog equipment such as a
fax machine or telephone to these ports.
Description
D Channel Status. Indicates the status of the ISDN physical
network interface and D channel.
Remains lit once the physical ISDN interface and D channel
signaling are synchronized.
Off indicates the physical ISDN interface is not synchronized or is
disconnected.
Flashes when the physical interface attempts synchronization or
when the ISDN D channel parameters have changed.
B1/B2 Channel Activity. Green indicates a data call in progress.
Amber indicates a voice call in progress. If a call is in a dialing state,
the LED flashes. When the call is disconnected, the LED goes off.
Ethernet Transmit Status. Flashes green when data is being
transmitted to the Ethernet LAN from the ISDN LAN Modem.
Off indicates no data is being transmitted to the Ethernet LAN
from the ISDN LAN Modem.
Ethernet Collision Status. Flashes amber when some collisions
are taking place on the Ethernet LAN.
Off indicates no collisions are taking place on the Ethernet LAN.
Ethernet LAN Port Status. On indicates the unit detects the
Ethernet link integrity signal from an attached computer and
operation is normal.
Flashes when the computer attached to that port is transmitting
data to the LAN.
Off indicates the unit does not detect the Ethernet link integrity
signal. The Ethernet cable may not be properly connected or the
cable may be the wrong polarity.
RESET
4
1 PHONE 2
Two Analog
Reset Button
Telephone Ports
Front Panel LED Description
1
3 2
LAN
Four Ethernet
10Base-T Connectors BRI Interface
29
ISDN
ISDN