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Loop limit: 2KΩ maximum at 48 Vdc(nominal 20 mA minimum loop current)
DC resistance
Talk Mode : 300Ω typical
Monitor impedance: >39kΩ nominal at 1 KHz
Rotary dial output
Pulsing rate : 10pps+0.8pps
Percent break : 60/40%±2%
Inter digit interval: 1000 ms typical
Leakage during Break : >130 KΩ
DTMF output
Tone frequency error : ±1.5% maximum
Tone level : -8±2dBm combined (typical)
High versus low tone Difference: 4 dB maximum
Memory dialing
Memory capacity : 12 memories
Digit capacity : 16 digits per memory
PBX pause duration : 1~3.6 seconds
Power source :4pcs 1.5V AAA batteries (not included)
PHYSICAL(Hook included)
Measurement : 218.5 ×69.5 × 49mm
Weight : 208g typical
