Cable (Ct1/Pri Interface View); Channel-Set (Ct1/Pri Interface View) - H3C MSR 20-20 Command Reference Manual

Example

cable (CT1/PRI interface view)

Syntax
View
Parameter
Description
Example

channel-set (CT1/PRI interface view)

Syntax
View
You may view the state and result of the BERT test with the display controller t1
command.
# Run a 10-minute 2^20 BERT test on CT1/PRI interface t1 2/0.
<Sysname> system-view
[Sysname] controller t1 2/0
[Sysname-T1 2/0] bert pattern 2^20 time 10
cable { long { 0db | -7.5db | -15db | -22.5db } | short { 133ft | 266ft | 399ft | 533ft |
655ft } }
undo cable
CT1/PRI interface view
long: Matches 199.6-meter (655-feet) and longer cable length. The options for
this parameter include 0db, -7.5db, -15db and -22.5db. The attenuation
parameter is selected depending on the signal quality received at the receiving
end. In this case, no external CSU is needed.
short: Matches a cable length shorter than 199.6 meters (655 feet). The options
for this parameter include 133ft, 266ft, 399ft, 533ft and 655ft. The length
parameter is selected depending on the actual transmission distance.
Use the command to set the cable attenuation and length on the CT1/PRI
cable
interface.
Use the undo cable command to restore the default, that is, long 0db.
You may use this command to adapt signal waveform to different transmission
conditions such as the quality of the signal received by the receiver. If the signal
quality is good, you can use the default setting. In this case, the CT1/PRI interface
does not need an external CSU device.
# Set the cable length to 40.5 meter (133 feet) on CT1/PRI interface T1 2/0.
<Sysname> system-view
[Sysname] controller t1 2/0
[Sysname-T1 2/0] cable short 133ft
channel-set set-number timeslot-list list [ speed { 56k | 64k } ]
undo channel-set [ set-number ]
CT1/PRI interface view
215