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Chapter 4
Configuring the PA-VXA, PA-VXB, and PA-VXC
Configure FXO or FXS Voice Ports
Under most circumstances, the default voice-port values are adequate for both FXO and FXS voice ports.
If you need to change the default configuration for these voice ports, perform the following tasks. Items
included in Step 1 and Step 2 are required; items included in Step 3 are optional.
Step 1
Identify the voice port and enter the voice-port configuration mode by using the voice-port command.
Step 2
Configure the following mandatory voice-port parameters by using the indicated commands:
•
•
•
•
•
Configure one or more of the following optional voice-port parameters by using the indicated
Step 3
commands:
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•
•
•
To configure FXO and FXS voice ports, use the following commands beginning in privileged EXEC
mode:
Command
Step 1
configure terminal
Step 2
voice-port
slot-number/subunit-number/port
Step 3
dial-type {dtmf | pulse}
Step 4
signal {loop-start |
ground-start}
Step 5
cptone country
Step 6
ring number number
Step 7
connection plar string
OL-3592-02
Dial type (FXO only) using the dial-type command
Signal type using the signal command
Call progress tone using the cptone command
Ring frequency (FXS only) using the ring frequency command
Ring number (FXO only) using the ring number command
PLAR connection mode using the connection plar command
Music threshold using the music-threshold command
Description using the description command
Comfort noise (if VAD is activated—vad is a dial-peer command) using the comfort-noise
command
Purpose
Enter the global configuration mode.
Identify the voice port you want to configure and enter the
voice-port configuration mode.
(For FXO ports only.) Select the appropriate dial type for
out-dialing.
Select the appropriate signal type for this interface.
Select the appropriate voice call progress tone for this interface.
The default for this command is us. For a list of supported
countries, refer to the Voice, Video, and Home Applications
Command Reference.
(For FXO ports only.) Specify the maximum number of rings to
be detected before answering a call.
(Optional.) Specify the Private Line Auto Ringdown (PLAR)
connection if this voice port is used for a PLAR connection. The
string value specifies the destination telephone number.
T1/E1 Digital Voice Port Adapter Installation and Configuration
Configuring Voice over IP
4-23
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Troubleshooting
