Matrix Telecom SARVAM UMG System Manual page 168

• Set the Ringer Threshold to the desired value. This parameter defines the level below which the FXO
Port would not validate the Ring signal and the level above which it would validate the Ring signal. Set
Ringer Threshold — 13.5 - 16.5, 19.35 - 23.65 or 40.5 - 49.5. Default: 13.5 - 16.5 Vrms.
• Click Submit to save.
DTMF Settings
• Click DTMF Settings to expand.
• Select the appropriate Dial Type option as supported by your CO Network. You can select — Pulse or
DTMF. Default: DTMF.
• If you have selected Dial Type as Pulse, you must set the Pulse Dial Ratio as per your country. You
can select — 40:60, 50:50 or 33:67. Default: 33:67.
• Select the appropriate DTMF Generation ON Time for the FXO Port. This is the time for which the DTMF
tone is generated. Valid range is 50 to 200 msec. Default: 70 msec.
• Select the appropriate DTMF Generation OFF Time for the FXO Port. This is the time for which the
system should wait before dialing the successive DTMF digits so that the CO Network can detect the
dialed digits. Valid range is 50 to 200 msec. Default: 70 msec.
• Select the appropriate DTMF Detection ON Time (Minimum) for the FXO Port. This is the minimum time
period for which the DTMF signal should be present in order to be detected. Valid range is 20 to 200 msec.
Default: 20 msec.
• Select the appropriate DTMF Detection OFF Time (Minimum) for the FXO Port. This is the minimum time
period between successive DTMF digits. Valid range is 20 to 200 msec. Default: 20 msec.
• Select the appropriate DTMF Detection Level (Minimum) for the FXO Port. This is the minimum level
(dB) of the DTMF digit to be considered as valid. Default: -10.5 dB.
• To configure the next FXO Port, click the FXO Port number and follow the same instructions as given
earlier.
Copy Port Parameters
• You can also copy the settings of a FXO Port to another FXO Port using the Copy button. To do this,
Matrix SARVAM UMG System Manual 162