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 M
Ω
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 M
Ω
or 30k
Ω
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
Содержание Aprisa XE
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