Configuring A T1 Digital Line Card For Isdn Pri Signaling - 3Com NBX 100 Administrator's Manual

Configuring a T1
Digital Line Card for
ISDN PRI Signaling
To enable or disable echo cancellation:
1 On the Digital Line Cards tab, select T1 Span List from the Select Device
Type drop-down list and click Apply.
2 Select the span for which you want to set echo cancellation.
3 Click the Audio Controls button.
4 Enable the Echo Canceller Enabled check box to turn on echo
cancellation. Remove the check from the Echo Canceller Enabled check
box to turn off echo cancellation
5 Click OK.
These sections tell you how to use the NBX NetSet utility to set up your T1
Digital Line Card for ISDN PRI signaling:
T1 ISDN PRI Configuration
Configuring T1 Groups (ISDN PRI)
Verifying T1 Group Membership (ISDN PRI)
Completing the T1 Configuration (ISDN PRI)
Before you configure a T1 Digital Line Card for ISDN PRI (Primary Rate
Interface) signaling, read the cautionary note.
CAUTION: Wait at least 3 minutes for the T1 card to initialize and for the
system to update its database. The T1 card reboots twice during the
initialization process. If you attach a console cable to the COM1 port on
the T1 card and use Hyperterm software to view the text output from the
card, you see status messages associated with the two reboot processes.
See "Connecting a Computer to a Serial Port"
Another way that you can be sure that it is safe to proceed is to examine
the status lights on the front panel of the T1 card. After the Auto
Discovery process has completed, and before you connect the T1 Digital
Line Card to the telephone company's T1 line, the CF (Carrier Fail) light
should appear solid green on a 3C10116C card. On a 3C10116D card,
the POST, DNLD, CARD and NCP lights should appear solid green. For
more information on T1 card status lights, see
page 208.
Configuring and Managing T1 Digital Line Cards
on page 386.
"T1 Card Status Lights"
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on