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FXO interface configuration task list 422
SmartWare Software Configuration Guide 36 • FXO interface configuration
Configuring how to detect a call has disconnected (optional)
When a call has disconnected, the FXO interface may detect and verify the termination of the phone call by
three different methods.
• Detect a busy tone or release tone
• Detect a loop break (if provided by the FXS switch)
• Detect battery reversal (if provided by the FXS switch)
• Detect a dtmf signal
• Configure loop break timing
The selection of the method, if any of the three, is via the
disconnect-signal command. The default enables
only loop-break. Upon detecting a loop break, the FXO interface proceeds to clear the call on the SmartNode.
In some instances, the user may need to transmit all of the in-band information (tone signal, announcement)
to the end party after disconnection has occurred.
The
disconnect-signal command can be used to enable or disable the three detection methods. If all three
methods are disabled, the call is cleared after a period of 30 seconds from reception of the disconnect signal.
Consequently it becomes the responsibility of the end party to execute the on-hook (completing the discon-
nection phase) for the call to be completely cleared.
Note Verify that the busy and release tones are correctly configured for the country
where the SmartNode is installed (see chapter 42, “Tone configuration” on
page 529 for configuration information. If the tones are improperly config-
ured, the FXO port will not detect them, resulting in missed phone calls.
Mode: Interface FXO
Step Prompt, command & response Purpose
1 node(if-fxo)[if-name]#[no] disconnect-signal
{battery-reversal | busy-tone | loop-break}
The default is Loop-break. To disable it, use
the no inverse command. Should all three
methods be disabled, the call is cleared 30
seconds after receiving the disconnect signal.
The default setting of loop-break is not dis-
played in the running-config output.
2 [name] (if-fxo) [interface]# [no] disconnect-sig-
nal dtmf <dtmf-digits>
Disconnects the call upon reception of one of
the specified DTMF digits.
3 [name] (if-fxo) [interface]#loop-break-duration
[min <min-time>] [max <max-time>]
Specifies the timing of the loop break signal.
Shorter breaks are ignored, longer breaks
are treated as line down.
Min specifies the minimum time of a valid
loop break (Default 60ms). Max specifies the
maximum time of a valid loop break (Default
600ms). Please note that the internal timer
has a resolution of 40ms.