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Front Panel LED Description
29
Back Panel Connector
Description
The back panel provides the following components.
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.
ISDN
OK
Green
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
Amber or
Green
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.
Tx
Green
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.
Coll
Amber
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.
Ports1—4
Green
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.
Table 4
Front Panel LED Indicator Definitions
LED
Color
Description
RESET
10-18 VDC
0.8 A MAX
ISDN
1 PHONE 2
LAN
Power
Connector
Reset Button
Two Analog
Telephone Ports
Four Ethernet
10Base-T Connectors
ISDN
BRI Interface
4
3
1
2
Содержание OfficeConnect 3C892A
Страница 1: ...http www 3com com OfficeConnect ISDN LAN Modem User Guide Part No 984 000026 2 Published January 1999 ...
Страница 8: ......
Страница 14: ......
Страница 22: ...16 CHAPTER 1 INTRODUCTION ...
Страница 32: ...26 CHAPTER 2 ISDN LAN MODEM FUNCTIONALITY DESCRIPTION ...
Страница 42: ...36 CHAPTER 3 HARDWARE DESCRIPTION AND INSTALLATION ...
Страница 52: ...46 CHAPTER 4 SETTING UP TCP IP FOR WINDOWS AND MACINTOSH ...
Страница 64: ...58 CHAPTER 5 CONFIGURING THE ISDN LAN MODEM ...
Страница 90: ...84 CHAPTER 7 SUPPLEMENTARY VOICE CALL SERVICES ...
Страница 96: ...90 CHAPTER 8 PLACING RECEIVING AND DISCONNECTING CALLS ...
Страница 114: ...108 APPENDIX A NETWORKING PRIMER ...
Страница 118: ...112 APPENDIX C ISDN LAN MODEM FACTORY DEFAULTS ...
Страница 122: ...116 APPENDIX D ISDN LAN MODEM SPECIFICATIONS ...
Страница 126: ...120 GLOSSARY ...
Страница 128: ...122 INDEX ...