LED INDICATORS

WAN LED Indicators

D-CHAN LED status

One Data Link

Multiple Data Links*

 

 

 

off

no activity

no activity

 

 

 

flashing

trying to bring up

not all data links are up

(mostly off)

data link

 

 

 

 

flashing

activity

activity

(mostly on)

data link is up

data link is up

 

 

 

on solid

no activity

no activity

 

data link is up

data link is up

 

 

 

*On DMS-100 and NI-1 switches, more than one data link is possible.

The CH-1and CH-2indicators signify activity along their respective B channel:

CH-1 or CH-2 LED

Description

Status

 

 

 

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

PRI LED INDICATORS

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.

 

 

LAN

 

 

 

 

B-CHANNELS

 

 

 

 

 

SERVICE

TX

B1

B3

B5

B7

B9

B11

B13

B15

B17

B19

B21

B23

RX 10BASE - T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E1

 

 

T1

 

 

 

 

 

 

 

 

 

 

D

 

 

D

 

 

B2

B4

B6

B8

B10

B12

B14

B16

B18

B20

B22

B24

E1 ONLY

B25

B27

B29

B31

B26

B28

B30

L1

A B channel indicator flashing indicates activity on that B channel. Likewise, a D channel indicator flashing indicates data link and D channel activity.

Workgroup Remote Access Switch 419

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Cabletron Systems CSX1200, CSX1000 manual PRI LED Indicators