Matrix Visionpro System Manual page 62

• DTMF Detection Minimum ON Timer (ms): The default settings of DTMF Detection serve the
requirements of most of the applications. However, you may need to fine tune the DTMF related timers (as
mentioned in following parameters) if you face any problems in DTMF detection.
This timer signifies the minimum time period for which the DTMF signal should be present in order to be
detected. The valid range of this timer is 17 to 204 milliseconds. By default, Minimum ON Time is set to 34
milliseconds.
• DTMF Detection Minimum OFF Timer (ms): This parameter signifies the minimum time period between
successive DTMF digits. The valid range of this time is 17 to 204 milliseconds. By default, Minimum OFF
Timer is set to 68.
• DTMF Out Dial ON Time (ms): While dialing out the DTMF digits from the CO port, this feature comes into
play. It is the time width of the DTMF digit to be dialed out by the CO port. By default the ON Time is set to
102 milliseconds.
• DTMF Out Dial Inter-Digit Pause Time (ms): When the CO port dials out the DTMF digits on the CO, it
waits for the Inter Digit Pause Timer, while dialing the DTMF digits on CO trunk. This timer is
programmable. By default the timer is set to 102 milliseconds.
These DTMF Out Dial attributes are applied when the features Redial, Auto Redial and Abbreviated
Dialing are used to dial out the numbers from the CO port.
• Flash Timer on Trunk (ms): This parameter is relevant for dialing out Flash on the CO trunk to access
some of the features of the PSTN. Configure the desired time of Flash to be generated on the CO trunk.
The range of the timer is from 83 to 900ms. By default the Flash Timer is set to 600ms.0
0
• ON-Hook Speed (ms): This parameter allows you to set the amount of time for the line-side device to go
ON-Hook.
The ON-Hook speed specified is measured from the time the ON-Hook bit is cleared until loop current
equals to zero. Select the desired ON-Hook Speed from the following options:
• <0.5ms
• 3 ms
• 26 ms
By default, <0.5ms is selected as ON-Hook Speed.
• OFF-Hook Speed (ms): This parameter defines the time to settle the line transients after which
transmission or reception can occur. Select the desired OFF-Hook Speed from the following options:
• 512 ms
• 128 ms
• 64 ms
• 8 ms
By default, OFF-Hook Speed is set to 8ms.
• Current Limiting Mode: With this parameter you can enable Loop Current Limiting mode. When this
parameter is enabled, the Loop Current will be limited to a maximum of 60mA.
Matrix VISIONPRO System Manual 56