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 |
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: Transparent, white backlit buttons with easily replaceable name tags
- Button count: 1 or 2
Audio
- Microphone: 1 integrated microphone
Amplifier: Optional – additional 0,5 W amplifier
Physical Properties
- Cover: ABS plastic, high-quality stainless steel
- Working temperature: −25°C to +55°C
- Working relative humidity: 10% to 95% (non-condensing)
- Storing temperature: −40°C to 70°C
- Dimensions:
- (193 × 115 × 39) mm
- (197 × 119 × 47) mm flush box
- (193 × 115 × 57) mm for wall mounting
- Weight
- Net product weight: 500 g
- Flush box: 135 g
- Total weight incl. package: 800 g
- Protection level: IP54