4RF Aprisa XE User Manual - page 248
Specifications | 247
Signalling
Pulse dialing
Transparent decadic signalling at 7 - 14 PPS with break
period limits of 60 - 73 %
Pulse distortion
4:1 multiplexed < 2.250 ms
Non-multiplexed
≤ 250 µs
Reversals
Line polarity reversal detection
Metering level sensitivity
12 kHz / 16 kHz billing tone detection with a selectable level
sensitivity of -17dBm to -40 dBm in 1dB steps into 200 Ω
(60 mV rms to 5 mV rms into 200 Ω).
Metering level maximum
The maximum level of metering signal the DFXO can tolerate
without voice band interference is 0.8 Vrms into 200 Ω.
Loop resistance on-hook
>1 MΩ
Ringing detection threshold
Options of 16 Vrms, 26 Vrms or 49 Vrms
Ringing detection frequency
15 to 50 Hz sine wave
Ringing input impedance
Option of >10 MΩ or 30kΩ
Ringing DC offset range
tolerance
0 to -75VDC
Ringing input voltage
maximum
up to 100 Vrms
Physical
Physical interface
Dual RJ-45 per port (1 line port, 1 monitor port)
Diagnostics
Green LED
On: Normal operation
Solid: Off-hook
Flashing: Ringing
Yellow LED
On: Alarm
Flashing: Loopback