Fine-Tuning Fxs Voice Ports - Cisco WS C4224V 8FXS - 200Mbps Ethernet Switch Software Configuration Manual

Fine-Tuning FXS Voice Ports

Fine-Tuning FXS Voice Ports
Command
configure terminal
voice-port slot_number/port
input gain value
output attenuation value
echo-cancel enable
echo-cancel coverage value
impedance value
non-linear
timeouts initial seconds
timeouts interdigit seconds
Catalyst 4224 Access Gateway Switch Software Configuration Guide
7-6
Depending on the specifics of your particular network, you might need to
fine-tune the FXS voice port settings. Under most circumstances, the default
values will suffice; however, if you need to change them, use the following
commands in privileged EXEC mode.
Purpose
Enters global configuration mode.
Identifies the voice slot and port number you want to
configure, and enters voice port configuration mode.
Specifies (in decibels) the amount of gain to be inserted at
the receiver side of the interface. Acceptable values are
from –6 to 14.
Specifies (in decibels) the amount of attenuation at the
transmit side of the interface. Acceptable values are from 0
to 14.
Enables echo-cancellation of voice that is sent out through
the interface and received back on the same interface.
Adjusts the size (in milliseconds) of the echo-cancel.
Acceptable value is 8.
Specifies the impedance of the port.
The functional values are 600r (the default) and complex2
(an 820 ohm in series with (220 ohm | 120 nF)).
Enables nonlinear processing, which shuts off any signal if
no near-end speech is detected. (Nonlinear processing is
used with echo-cancellation.)
Specifies the number of seconds that the system will wait
for the caller to enter the first digit of the digits to be dialed.
Valid entries are from 0 to 120.
Specifies the number of seconds the system will wait (after
the caller has entered the initial digit) for the caller to enter
a subsequent digit. Valid entries are from 0 to 120.
Chapter 7 Configuring the Eight-Port FXS RJ-21 Module
OL-2031-02