4. Technical Parameters

Telephone Parameters

Parameters

Value

Conditions

Minimum required off-hook line current

15 mA

Off-hook

Minimum required on-hook line voltage

20 V

Hang-up

DC voltage drop (off-hook)

< 8 V < 16 V

I = 25 mA
I = 50 mA

Lead current while hang-up

< 25 μA

U = 60 V

Off-hook AC impedance

220 Ω + 820 Ω 115 nF parallel

20 to 60 mA

Return loss

> 10 dB

20 to 60 mA

Bandwidth

300 to 3500 Hz

20 to 60 mA

Ringing impedance

> 2 kΩC = 1 μF

25 to 50 Hz

Ringing detector sensitivity

10 to 20 V

25 to 50 Hz

Time of response to ringing

Variable

Pulse dialling

40/60 ms

20 to 60 mA

DTMF level

−6 and −8 dB± 2 dB

20 to 60 mA

DTMF detector sensitivity

Min. −40 dB

20 to 60 mA

Dial tone detector sensitivity

Min. −40 dB

350 to 500 Hz

Busy tone detection speed

Variable

350 to 500 Hz

Continuous tone detection speed

Variable

350 to 500 Hz

Ringing tone detection speed

Variable

350 to 500 Hz

Overvoltage protection – common mode

1000 V

8/20 μs

Overvoltage protection – between A, B conductors

1000 V

8/20 μs

Other Electric Parameters

  • Switch – max. voltage: 48 V AC, DC
  • Switch – min. voltage: 9 V AC, DC
  • Switch – max. current: 2 A AC, DC
  • Backlight – rated voltage: 12 V
  • Backlight – max. voltage: 14 V
  • Backlight – current consumption: Up to 5 mA

Buttons

  • Button design: 
    • 2N® Analog Force: 1 to 4 transparent, white backlit buttons with easily replaceable name tags
    • 2N® Analog Safety: One illuminated, stainless steel pushbutton

Audio

  • Microphone: 1 integrated microphone
  • Amplifier: Optional – additional 0,5 W amplifier


Physical Properties

  • Cover: Robust aluminium cast product
  • Colour:
    • 2N® Analog Force: Not from RAL scheme, matching equivalent would be 9004 glossy black
    • 2N® Analog Safety: RAL 2004 orange
  • Working temperature: −25°C to +55°C
  • Working relative humidity: 10% to 95% (non-condensing)
  • Storing temperature: −40°C to 70°C
  • Dimensions:
    • (217 × 109 × 83) mm 
    • (242 × 136 × 83) mm incl. frame
  • Weight
    • Netto max: 2 kg 
    • Brutto max: 2,5 kg
  • Protection level: IP65