4RF Aprisa XE User Manual page 118

116 | Configuring the Traffic Interfaces
10. Set the DFXS Ringer Output Voltage.
This option sets the DFXS open circuit Ringing Output Voltage which is sourced via an internal ringing
resistance of 178 per port.
The DC offset on the AC ringing signal enables ring trip to occur with a DC loop either during ringing
cycles. The normal DC line feed voltage enables ring trip to occur with a DC loop in the silent period
between the ringing cycles.
Selection
60 Vrms + 0 VDC
55 Vrms + 10 VDC
50 Vrms + 18 VDC
45 Vrms + 22 VDC
40 Vrms + 24 VDC
11. Select the DFXS Billing Tone Frequency.
This option sets the frequency of billing tone generation. If you are not sure what the expected
frequency of the billing tone should be, check with the exchange equipment supplier.
Selection
12 kHz
16 kHz
Description
Outputs 60 VRMS ringing with no DC offset
Maximum ringing voltage for high ringing load
applications but no DC ring trip
Outputs 55 VRMS ringing with a 10 VDC offset
Medium ringing load applications
Outputs 50 VRMS ringing with a 18 VDC offset
Above average ringing load applications
Outputs 45 VRMS ringing with a 22 VDC offset
Typical application
Outputs 40 VRMS ringing with a 24 VDC offset
Lowest terminal power consumption
Description
Use if the CPE requires a 12 kHz billing tone signal
Use if the CPE requires a 16 kHz billing tone signal
Aprisa XE User Manual
Default
Default