Matrix Telecom SARVAM UMG System Manual page 134

• Select None when no signaling is available from the CO network.
• Select Battery Reversal when call disconnection is signaled in the form of reversed polarity.
When the call is disconnected by the remote user, the reversed polarity is signalled and the FXO Port is
released (free). The caller will get an error tone.
• Select Open Loop Disconnect when call disconnection is signaled in the form of an Open Loop
signal. The system will check Open Loop Disconnect signal for the time configured in the Open Loop
Disconnect Timer.
Only if, the Open Loop signal is detected continuously for the time configured in Open Loop Disconnect
Timer, it will be considered as a valid Open Loop signal for releasing the port.
If you select this option, you must configure the Open Loop Disconnect Timer.
• Set the duration of the Open Loop Disconnect Timer as per your requirement. Valid range is 001
to 999 msec. Default: 200 msec.
Default: Open Loop Disconnect.
• Disconnect Tone Detection is used by the system to release the FXO Port, when the remote party goes
On-hook or disconnects the call. The tone detection is applicable for both incoming and outgoing calls from
the FXO Port.
Select the Disconnect Tone Detection check box, if you want the system to detect Call Disconnect Tone
sent by the CO network on the FXO Port.
• Select the Disconnect Tone Type that you want the system to use as the Call Disconnect Tone on the
FXO Port. Default: Disconnect Tone 1
If required, you can customize the frequencies and cadences of the Disconnect Tone as per your
requirement. For instructions, see
• Set the duration of the Ring Cadence-OFF Timer, to set the OFF time for Ring cadence. During the
incoming call on FXO Port, if the CO gives ring in which the Ring OFF period is quite long, the system will
consider that the ring has been stopped, and will stop ringing the FXS port, even though the incoming call
is still present.
To get accurate indication, the system supports Ring Cadence OFF timer on FXO Port so that ring can
continue even for incoming calls with long Ring OFF period. Valid range is 1 to 9 seconds. Default: 5
seconds.
• Set the duration of the Flash Timer. This is the time for which Flash will be generated on the FXO Port.
SARVAM UMG uses this event to activate various features — Call Hold, Call Transfer, etc. Default: 600
msec.
• Set the duration of the Pause Timer to add delay while a call is being made from the FXO Port. After the
FXO Port goes Off-hook, SARVAM UMG adds some delay before dialing out the number. During this time,
no digit is dialed by the system on the FXO Port. This is used when the exchange takes some time to
detect that the FXO Port is Off-hook. Default: 500 msec.
Matrix SARVAM UMG System Manual
"Disconnect Tone".
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