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T1/E1 Digital Voice Port Adapter Installation and Configuration
OL-3592-02
Chapter 4 Configuring the PA-VXA, PA-VXB, and PA-VXC
Configuring Voice over IP
•
Nonlinear processing using the non-linear command
•
Initial digit timeouts using the timeouts initial command
•
Interdigit timeouts using the timeouts interdigits command
•
Timing other than timeouts using the timing digit, timing inter-digit, timing pulse-digit, and
timing pulse-inter-digit commands
To fine-tune FXO or FXS voice ports, use the following commands beginning in privileged EXEC mode:
:
Command
Purpose
Step 1
configure terminal
Enter the global configuration mode.
Step 2
voice-port
slot-number/subunit-number/port
Identify the voice port you want to configure and enter the
voice-port configuration mode.
Step 3
echo-cancel enable
Enable echo cancellation of voice that is sent out the interface and
received back on the same interface.
Step 4
echo-cancel coverage value
Adjust the size (in milliseconds) of the echo cancel. Acceptable
values are 16, 24, and 32.
Step 5
non-linear
Enable nonlinear processing, which shuts off any signal if no
near-end speech is detected. (Nonlinear processing is used with
echo cancellation.)
Step 6
timeouts initial seconds
Specify the number of seconds the system waits for the caller to
input the first digit of the dialed digits. Valid entries for this
command are from 0 to 120.
Step 7
timeouts interdigit seconds
Specify the number of seconds the system waits (after the caller
has input the initial digit) for the caller to input a subsequent
digit. Valid entries for this command are from 0 to 120.
Step 8
timing digit milliseconds
If the voice-port dial type is DTMF, configure the DTMF digit
signal duration. The range of the DTMF digit signal duration is
from 50 to 100. The default is 100.
Step 9
timing inter-digit milliseconds
If the voice-port dial type is DTMF, configure the DTMF
inter-digit signal duration. The range of the DTMF inter-digit
signal duration is from 50 to 500. The default is 100.
Step 10
timing pulse-digit milliseconds
(FXO ports only.) If the voice-port dial type is pulse, configure
the pulse-digit signal duration. The range of the pulse-digit signal
duration is from 10 to 20. The default is 20.
Step 11
timing pulse-inter-digit
milliseconds
(FXO ports only.) If the voice-port dial type is pulse, configure
the pulse inter-digit signal duration. The range of the
pulse-inter-digit signal duration is from 100 to 1000. The default
is 500.
