Patton electronic SmartNode 4110 Series Configuring how to detect a call has disconnected optional

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-signalcommand. 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-signalcommand 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	The default is Loop-break. To disable it, use
	{battery-reversal busy-tone loop-break}	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-	Disconnects the call upon reception of one of
	nal dtmf <dtmf-digits>	the specified DTMF digits.

3[name] (if-fxo)[interface]#loop-break-durationSpecifies the timing of the loop break signal.

[min <min-time>] [max <max-time>]	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.

FXO interface configuration task list 422