Chapter 23 diagnostic Commands
Management Switch Card User’s Guide
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23.4.7 diagnostic loopback internal Command
This command performs a loopback test on the specified DSL port.
The following example performs loopback diagnostic on DSL port 5 of the line card in slot 2.
The command then displays the results of the DSL port loop diagnostic.
23.5 diagnostic mlt test Commands
Use these commands to perform a variety of standard Metallic Line Tests on the VoIP line card
subscriber ports.
23.5.1 diagnostic mlt test Command
Syntax:
diagnostic mlt test <slot-port>
all|vac|vdc|rload|riso|cap|ren|ring|metering|dialtone|digit|roh [<type> <count>]
[force]
where
ras> diagnostic loopback internal 2-5
test succeeded
all
=
Perform all tests on the line connected to the specified VoIP line card port.
vac
=
Test the line’s AC voltage only.
vdc
=
Test the line’s DC voltage only.
rload
=
Test the line’s load resistance only
riso
=
Test the line’s isolation resistance only.
cap
=
Test the line’s capacitance only.
ren
=
Test the line’s ringer equivalent number only.
ring
=
Test the line’s ring voltage only.
metering
=
Test the line’s metering voltage only.
dialtone
=
Test that the dialtone plays and the delay.
digit
=
Detect pulse or DTMF digits on the line.
roh
=
Detect if the phone is on-hook or off-hook.
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