Panasonic KX-TG674SK Operating Instructions Manual page 74

Useful Information
Compliance with TIA-1083 standard:
Telephone handsets identified with this logo
have reduced noise and interference when
used with T-Coil equipped hearing aids and
cochlear implants.
Compatible with
Hearing Aid T-Coil
TIA-1083
For assistance, please visit http://shop.panasonic.com/support
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