SROS Command Line Interface Reference Guide
T1 Interface Configuration Command Set
5991-2114
© Copyright 2006 Hewlett-Packard Development Company, L.P.
704
lbo [long
<-22.5, -15, -7.5, 0>
| short
<0-655>
]
Use the
lbo
command to configure the line build out (LBO) for the T1 interface. Use the
no
form of this
command to return to the default value.
Syntax Description
long
<-22.5, -15, -7.5, 0>
Configures the LBO (in dB) for T1 interfaces with cable lengths greater than
655 feet. Choices are -22.5, -15, -7.5, and 0 dB.
short
<0-655>
Configures the LBO (in feet) for T1 interfaces with cable lengths less than
655 feet. Range is 0 to 655 feet.
Default Values
By default, the build out is set to 0 dB.
Functional Notes
Line build out (LBO) is artificial attenuation of a T1 output signal to simulate a degraded signal. This is
useful to avoid overdriving a receiver’s circuits. The shorter the distance between T1 equipment
(measured in cable length), the greater the attenuation value. For example, two units in close proximity
should be configured for the maximum attenuation (-22.5 dB).
Usage Examples
The following example configures the T1 interface LBO for -22.5 dB:
ProCurve(config)#
interface t1 1/1
ProCurve(config-t1 1/1)#
lbo long -22.5
Содержание ProCurve Secure 7102dl
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