Cabletron Systems CSX1000 - Manual (Page 419)

Workgroup Remote Access Switch 419
LED I NDICATORS
WAN LED Indicators
* On DMS-100 and NI-1 switches, more than one data link is possible.
• The CH-1 and CH-2 indicators signify activity along their respective B channel:
PRI LED I NDICATORS
In the bank of PRI LED indicators, there is one indicator for each B channel (labeled B1 through B23
for T1 lines, and B1 through B31 for E1 lines), a D channel indicator (labeled T1 D for T1 lines, and
E1 D for E1 lines), and a Sync indicator.
As illustrated below, the D channel indicators are dual labeled. Because the 1200 can use either T1
or E1 lines, it is labeled for both. In result, the B16 indicator (B-Channel indicator, number 16) for
T1 line doubles as the E1 D channel indicator, and the B24 indicator for E1 lines doubles as the T1
D channel indicator.
A B channel indicator flashing indicates activity on that B channel. Likewise, a D channel indicator
flashing indicates data link and D channel activity.
D-CHAN LED status One Data Link Multiple Data Links*
off no activity no activity
flashing
(mostly off)
trying to bring up
data link
not all data links are up
flashing
(mostly on)
activity
data link is up
activity
data link is up
on solid no activity
data link is up
no activity
data link is up
CH-1 or CH-2 LED
Status
Description
off no call over channel
flashing Data being passed over channel. Speed of
flashes depends upon number of frames being
sent.
on solid call up, but no data being transferred
SERVICE TX RX 10BASE - T
LAN B-CHANNELS E1 ONLY
B2 B4 B6 B8 B26 B28 B22 B24 B18 B20 B14 B16 B10 B12 B30 L1
B1 B3 B5 B7 B25 B27 B21 B23 B17 B19 B13 B15 B9 B11 B29 B31
E1
D
T1
D