Technical Specifications (18-0037) AM8a Instruction Manual
February 10, 2000 0037-S08.L_
8-2
Line Signaling
Detect and generate all of these line signals:
On Hook
Off hook
Wink
Flash
Unbalance (generate only)
Ringing
Ground Start (tip and ring)
Answer supervision (reverse battery)
EMULATION
User-controlled parameters for circuit emulation. When shown as a range, parameters are
selectable in unit steps, unless otherwise noted.
Digital Ports
Impedance: 100 Ω at 1.544 megabits-per-second bipolar PCM
(switches to 1K Ω in DSX monitor mode)
Analog Office Battery
Voltage: 20 V to 72 V ±2%
Current: 120 mA maximum (not selectable)
Analog Loop
DC Loop Length: 0 to 2100 Ω, adjustable in 300 Ω steps
DC Hold Resistance: 10 Ω, 330 Ω, 430 Ω
AC Impedance: 135 Ω, 600 Ω, 900 Ω, 1200 Ω at 300 to 3300 Hz
2.16 µF (IN or OUT). OUT= 24µF
Ringer Load: 2.0 type B ringer equivalents (2 REN)
Ringer Generation
Voltage: 30 Vrms to 105 Vrms ±4% in 5 Vrms steps
Frequency: 15.0 Hz to 70.0 Hz in 0.1 Hz steps
Load: 5.0 ringer equivalents ( 5 REN) maximum. (If no
battery option and AC input is less than 100 Volts,
unit will work with 3 REN or less. Loop Length
must be 1500 ohms or more.)
Ring Trip: below 2100 ohms; 2100 ohm loop length will not
detect ring trip (Loop Closure, answer).
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