Configuring the traffic interfaces | 99
12. Select the DFXS Billing Tone Level.
This option sets the DFXS billing tone output level which is defined as the voltage into 200 with
a source impedance equal to the Line Impedance setting.
The billing tone voltage into 200 is limited by the maximum open circuit voltage of 1 Vrms. The
drop down list reflects the maximum allowable billing tone output voltage for the Line Impedance
setting selected.
Selection Description
400 mV rms Billing tone voltage setting available for line impedances
of TN12, BT3 and TBR21.
300 mV rms Billing tone voltage setting available for line impedances
of TN12, BT3, TBR21 and 600 .
Default
200 mV rms Billing tone voltage setting available for line impedances
of TN12, BT3, TBR21, 600 and 900 .
100 mV rms Billing tone voltage setting available for all line
impedance settings.
13. The DFXS billing tone Attack Ramp time can be adjusted to reduce the interference which can be
produced when a signal turns on quickly. The attack ramp time is how long the billing tone
generator takes to ramp up to full level when it is turned. The default ramp time is 1 ms.
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