Handsets for public phones / multimedia and information terminals etc.

Handsets

for public phones / multimedia and information terminals etc.

Handset for public phones / multimedia and information terminals etc.

Electrical / acoustic data of the dynamic transducer
Technical data		Dynamic microphone-/ receiver capsule	Electret microphone / dynamic receiver capsule
Impedance	Transmitting end	Z=300 W ± 20% (at f=1 kHz)	Z=2 kW ± 30% (at f=1 kHz)
Impedance	Receiving end	Z=300 W ± 20% (at f=1 kHz)	Z=300 W ± 20% (at f=1 kHz)
Sensitivity IP 40 handset	Transmitting end	93,5 dB at 1kHz (0dB=20µPa)	-58,5 dB at 1kHz (0dB=1V/µbar)
Sensitivity IP 40 handset	Receiving end	95 dB at 1kHz (0dB=20µPa)	95 dB at 1kHz (0dB=20µPa)
Sensitivity IP 44 handset	Transmitting end	99 dB at 1kHz (0dB=20µPa)	-
Sensitivity IP 44 handset	Receiving end	95 dB at 1kHz (0dB=20µPa)	-

The receiving end is hearing aid compatible according to CCITT P.37.

All dimensions of the handsets comply with the CCITT recommendation of P.35. The handset housing consists of ABS bonded with ultrasound, the temperature range is from - 25°C to + 70°C (handset with dynamic microphone capsule) and 10°C to + 60°C (handset with electret microphone). The colour of the handsets is slate grey (similar to RAL 7015)

ESD compatibility: 8 kV air discharge, 4 kV contact discharge

Subject to change.


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