Matrix ETERNITY NE System Manual 287
• Operator: This parameter has 3 options: No operator, Modulation (*), Addition (+)
• If No operator is selected, frequency 2 will not be applicable.
• If Modulation (*) is selected, frequency 1 and frequency 2 will be used as modulation i.e. F1* F2
• If Addition (+) is selected, frequency 1 and frequency 2 will be used as addition i.e. F1 + F2.
• Frequency 2 (Hz): Frequency 2 is from 20 to 1400 Hz. Select Frequency 2 if the Disconnect Tone
supported by the CO network consists of Dual Frequency.
• First Cycle Cadence - ON Time 1 (msec), OFF Time 1 (msec): Configure the Cadence from 0000-9999
msec for ON Time 1 and OFF Time 1. Default: 0750.
• Subsequent Cycles: ON Time 2 (msec), OFF Time 2 (msec): Configure the Cadence from 0000-9999
msec for ON Time 2 and OFF Time 2. Default: 0750.
• Similarly, configure the Cadence from 0000-9999 msec for ON/OFF Time 3 and ON/OFF Time 4. Default:
0000.
When disconnect tone is detected on port, matches the Frequency and Cadences you have configured,
the call will be disconnected and the CO port will be released.
• Configure DTMF Out Dial parameters. While dialing out the DTMF digits from the CO port, the following
attributes of DTMF signal are critical.
• DTMF ON Time (msec): It is the width of DTMF digit to be dialed out by the CO port. Set the ON time
to the desired value. Default: 102 milliseconds.
• DTMF OFF Time (msec): When the CO port dials out the DTMF digits on the CO, it waits for the DTMF
OFF Time, while dialing the DTMF digits on the CO. Set the pause timer to the desired value. Default:
102 milliseconds.
The 'level' of each DTMF digit is fixed, at -6.0 dB, but you may configure these parameters to match the
CO network requirement.
• Configure the following DTMF Detection parameters, if necessary. The default settings of DTMF
Detection serve the requirements of most of the applications. However, you may fine tune the following
parameters if you face any problems in DTMF detection.
• Minimum Level (dB): This is the minimum level (dB) of the DTMF digit to be considered as valid.
Default: -4.5dB.
• Minimum ON Time (msec): This is the minimum time period for which the DTMF signal should be
present in order to be detected. The valid range of this time is 17 to 204 milliseconds. By default: 34
milliseconds.
• Minimum OFF Time (msec): This is the minimum time period between successive DTMF digits. The
valid range of this time is 17 to 204 milliseconds. Default: 68.
• Set the following Timers, if necessary.
• Speech Delay Timer: It is the time after which the system gives dial tone to the extension, when the
extension user grabs the CO Trunk.
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