Verilink DIU 2131 (880-502765-001) Product Manual - Manual (Page 24)

Diagnostics and Troubleshooting
4-4 Verilink User Manual
Monitoring Leads
and Status
The P command lets you monitor the status of the leads between
the DTE (Data Terminal Equipment) and the DCE (Data Carrier
Equipment).
To monitor the status of the leads:
1. Type “P” and the port number in the prompt line of the DIU
2131 Configuration/Diagnostic Menu .
2. Press
E NTER
. The following information displays in the prompt
line area.
This is what the fields mean:
Field Description
TXD
(Transmit Data)
YES: transitions are detected in transmit data
NO: DTE is not transmitting data (idle)
RXD
(Receive Data)
YES: transitions are detected in receive data
NO: the DIU is not outputting receive data (idle)
DTR
(Data Terminal Ready)
ON: DTE is asserting Data Terminal Ready
OFF: DTR is not asserted by the DTE
DSR
(Data Set Ready)
ON: DIU is asserting Data Set Ready
OFF: DIU is holding DSR low
RTS
(Request To Send)
ON: DTE is asserting RTS
OFF: RTS is not high
CTS
(Clear to Send)
ON: DIU is asserting CTS
OFF: the DIU is holding CTS low
DCD
(Data Carrier Detect)
ON: DIU is asserting DCD
OFF: the DIU is holding DCD low
[1, 2] DIU 2131 > P1
Handshake leads
V.35 leads
Loss of Signal alarm
TXD RXD DTR DSR RTS CTS DCD LL RL TM LOS
YES YES OFF OFF ON ON ON ON OFF ON ON <STOP> Port 1: