Features
v
Features
HD Voice*
3.5 mm TRRS Headset Jack
3.5 mm TRRS Cable to Device
3.5 mm TRS Stereo Mic Level Output
to Recorder
Screwdriver Caller Level adjustment
Switch Selects Between Popular
TRRS Congurations
Passive, no AC or Battery
Power Needed
Features
* HD Voice.
While standard phone calls have a narrow bandwidth of 300 Hz to 3.4 kHz, HD Voice calls
offer 50 Hz to 7 kHz bandwidth. The additional 1.5 octaves on the low end gives voice a
more natural sound, while the additional upper octave dramatically improves speech clarity
and intelligibility.
To take advantage of this extended bandwidth, both phones on the call must support HD
Voice, and both phones must be on the same carrier, in coverage areas that support
HD Voice.
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