Technical data

41
40
A monaural headset that provides exceptional
comfort and features an adjustable headband and noise-
canceling microphone. Its lightweight fit and excellent
acoustic quality enables all-day wear.
RLF 321 210/1
Incorporating the same features as the RLF 321 210, this
binaural version facilitates complete concentration even
in noisy environments.
RLF 321 211/1
Amplifier/switchbox for 200 series headsets. Highly
recommended for amplifying the sound level (not included
in the standard package).
• Suitable for use when switching between the headset
and the handset, in addition to amplifying the sound.
• Three modular jacks (4/4): one that connects to the tele
phone set and the other two for connection to the hand
set and headset.
• A short cable with modular plugs (4/4) for connection
to the telephone set.
• 1.5 V battery (alkaline type, cadmium free).
2/RLF 321 201/1
Dialog headsets specifications
Compliance with EU directives
All of the Dialog Headsets fulfill EU
directives for EMC and LCD
Colors
Dialog Headset 100 series:
graphite gray (RLF 321
115/1 is black)
Dialog Headset 200 series:
black
Environmental endurance data
Operation temperature and relative
humidity
Ambient temperature during operation
–10 to +45°C
Relative humidity
10% to 90%
Compatibility
All headsets are compatible with the
Dialog 3000 series of telephones and the
DGF 22010, except for the RLF 321
207/1, which is compatible with DGF
22001/1-5, 14 and DGF 22001/2, 1, 2, 7.
Package contents
Headband when applicable
Electro-acoustical characteristics
Headset Headset +
Sending only Dialog phone
DC feeding 5V, 3 kohm
Loudness rating SLR = +7
±3dB
Nominal sensitivity –37 dBV/Pa at 1kHz
Frequency response ETSI TBR 8
Noise, psophometric < -64 dBmp
Total distortion < 3% < 3%
Receiving
Impedance > 180 ohm
Loudness rating RLR = +3dB
at nominal
volume
Nominal sensitivity +30 dBPa/V at 1 kHz
Noise < 40 dBA
Noise distortion < 3% < 3%
The Dialog Headset series fulfills all of the relevant
sections of the Speech Performance Characteristics set
by the European Telecommunications Standards In-
stitute’s (ETSI) Technical Basics for Regulations (TBR 8).
Call Recep- Noisy Business
Noise center Operator tionist environ- environ-
100 series cancelation use use use ments ment
RLF 321 113/1 –– • • – •
RLF 321 114/1 •• • – • –
RLF 321 115/1 –– • • – •
RLF 321 116/1 –– • • – •
RLF 321 207/1 – – • • – –
(with an 8-pole
Lemo plug) (older OPIs)
200 series.
1/RLF 321 201/1 –– – – – •
1/RLF 321 204/1 •– – • – •
1/RLF 321 205/1 •• • • – –
RLF 321 210/1 •• • • • –
RLF 321 211/1 •• • – • –