Network Trunk Module

Figure 4-25 BC-SR Faceplate

BC-SR

RS 449/MIL188

X.21

V.35

LOS (red)

Bad Clk (red)

Yellow alarm (yellow)

DSR (green)

DTR (green)

RXD (green)

TXD (green)

Fail (red)

Active (green)

 

 

 

 

H8318

 

 

 

 

 

 

 

 

 

 

 

 

Table 4-19

BC-SR Connections and Status LEDs

 

 

 

 

Connection/Indicator

Function

 

 

 

 

EIA/TIA-449 data connector

DB-37 female connector

 

 

 

 

X.21 data connector

DB-15 female connector

 

 

 

 

V.35 data connector

34-pin female MRAC connector

 

 

 

 

 

LOS light (red)

 

Loss of signal at the local end

 

 

 

 

Bad CLK light (red)

Loss of clock or clock out of range

 

 

 

 

Yellow alarm light (yellow)

Loss of packet alignment (NTM) or frame alignment at remote end

 

 

 

 

 

DSR light (green)

 

The DSR lead is high (ON)

 

 

 

 

 

DTR light (green)

 

The DTR lead is high (ON)

 

 

 

 

 

RXD light (green)

 

The receive data line shows activity

 

 

 

 

 

TXD light (green)

 

The transmit data line shows activity

 

 

 

 

 

Fail light (red)

 

An error occurred. First, reset the card with resetcd f. If the LED comes on

 

 

 

 

again, contact the Cisco TAC through Customer Engineering

 

 

 

 

Active: light (green)

The card is in service and has active circuits

 

 

 

 

 

Trunk Cards 4-43

Page 43
Image 43
Cisco Systems IGX 8400 manual BC-SR Connections and Status LEDs, Connection/Indicator Function