Specifications

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Cisco 1751 Router Software Configuration Guide
OL-1070-01
Syntax Description
Default
0 dB.
Command Mode
Voice-port configuration.
Usage Guidelines
A system-wide loss plan must be implemented by using both input gain and output attenuation
commands. Other equipment (including PBXs) in the system must be taken into account when creating
a loss plan. The default value for this command assumes that a standard transmission loss plan is in
effect, meaning that, normally, there must be –6 dB of attenuation between phones. Connections are
implemented to provide –6 dB of attenuation when the input gain and output attenuation commands
are configured with the default value of 0.
You cannot increase the gain of a signal going out into the PSTN, but you can decrease it. Therefore, if
the voice level is too high, you can decrease the volume by either decreasing the input gain value or by
increasing the output attenuation.
Example
The following example configures a 3-dB gain to be inserted at the transmit side of the interface:
voice port 0/0
output attenuation 3
Related Commands
input gain
port
To associate a dial peer with a specific voice port, use the port dial-peer configuration command. Use
the no form of this command to cancel this association.
port slot-number/port
no port
value Amount of attenuation in dB at the transmit side of the interface.
Acceptable value is any integer from 0
to 14.