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100
C
HAPTER
9: T
ROUBLESHOOTING
AND
M
AINTENANCE
Understanding ISDN
Information
The ISDN statistics provided are as follows.
Layer 1 status:
Indicates whether layer 1 of the ISDN line is up or down.
Depending upon your location, layer 1 functions in one of two possible ways. In
some locations, layer 1 will be down if no calls are connected. However, when a
call is placed, layer 1 goes up. In other geographic areas, layer 1 is always up once
the ISDN line is configured. That is, the ISDN LED remains lit once you configure
your ISDN telephone numbers and while the ISDN LAN modem is turned on.
Therefore, layer 1 down may or may not indicate that there’s a problem with your
ISDN line. If your ISDN LED remained lit after you configured your ISDN line and
while you connected and disconnected calls, then layer 1 down indicates that
there’s a problem with your ISDN line. You should contact your telephone
company.
Layer 2 status:
Indicates whether layer 2 of the ISDN line is up or down. If Layer 2
is down for more than a few seconds while layer 1 is up (click
Update
to verify),
first make sure that your ISDN telephone numbers are configured accurately (click
ISDN Parameters
from the WebWizard main page). If your telephone numbers are
configured correctly, check with your telephone company. There may be a
problem with your ISDN line.
Understanding Current
Call Information
The current call information provided is as follows.
Table 11
ISDN Line Information
Description
Layer 1 status
Indicates whether layer 1 of your ISDN line is up or down.
Layer 2 status
Indicates whether layer 2 of your ISDN line is up or down.
TEI
Indicates the TEI value assigned to your ISDN line by your
telephone company.
Table 13
Current Call Information Description
Current Call
Information
For This Call
Type
Description
Call type
Data or voice
Indicates the type of call (data or voice) and the
B channel rate (56 Kbps or 64 Kbps).
Call direction
Data or voice
Indicates whether the current call is incoming or
outgoing.
Service provider name
Outgoing data Indicates the destination to which the current call is
connected.
IP address in use
Data call
Indicates the IP address assigned by the service
provider.
Primary DNS address
Outgoing data Indicates the primary DNS address of the service
provider to which the current call is connected.
Secondary DNS address Outgoing data If a secondary DNS address is needed, indicates the
secondary DNS address of the service provider to
which the current call is connected. This field will be
empty if a secondary DNS address is not needed.
(continued)
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 ...