Understanding Current Call Information; Understanding Isdn Information - 3Com OfficeConnect 3C892A User Manual

C 9: T
100
HAPTER ROUBLESHOOTING AND
Understanding ISDN
Information
Understanding Current
Call Information
M
AINTENANCE
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.
Table 11
ISDN Line Information
Layer 1 status
Layer 2 status
TEI
The current call information provided is as follows.
Table 13 Current Call Information Description
Current Call For This Call
Information Type
Call type Data or voice
Call direction Data or voice
Service provider name Outgoing data Indicates the destination to which the current call is
IP address in use Data call
Primary DNS address Outgoing data Indicates the primary DNS address of the service
Secondary DNS address Outgoing data If a secondary DNS address is needed, indicates the
(continued)
Description
Indicates whether layer 1 of your ISDN line is up or down.
Indicates whether layer 2 of your ISDN line is up or down.
Indicates the TEI value assigned to your ISDN line by your
telephone company.
Description
Indicates the type of call (data or voice) and the
B channel rate (56 Kbps or 64 Kbps).
Indicates whether the current call is incoming or
outgoing.
connected.
Indicates the IP address assigned by the service
provider.
provider to which the current call is connected.
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.