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 Port 1: