3Com NBX 100 Administrator's Manual page 201

Verifying T1 Group Membership (DS1)
Completing the T1 Configuration (DS1)
Before you configure a T1 Digital Line Card for DS1 protocol, read the
cautionary note.
CAUTION: Wait 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.
T1 DS1 Configuration
To set up the T1 card for the DS1 protocol:
1 On the Digital Line Cards tab, select T1/ISDN Board List from the Select
Device Type list, and click Apply. All Digital Line Cards (T1, E1, or BRI-ST)
that the system has discovered appear in the list. By default, the NBX
system autodiscovers a T1 Digital Line Card as a T1 DS1 card and displays
it in the list as T1 (not PRI).
2 From the list, select the new T1 Digital Line Card. Use the MAC address of
the T1 Digital Line Card to identify the card in the list. You recorded the
MAC address before inserting the card.
3 Click Modify.
4 Scroll through the Channel List to verify that the system lists all
24 channels. The channel numbers appear after the MAC address,
separated by a hyphen.
Configuring and Managing T1 Digital Line Cards
on page 386.
"T1 Card Status Lights"
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