ITU-T P.370-1996
Coupling Hearing Aids to Telephone Sets Study Group 12; 23 pp [Superseded: ITU-T P.37 ITU-T P.37]

Standard No.

ITU-T P.370-1996

Release Date

1996

Published By

International Telecommunication Union (ITU)

Latest

ITU-T P.370-1996

Scope

Clause 4 applies to telephone handsets having supra-aural earphones that can be connected to the Public Switched Telephone Network (PSTN) or the Integrated Services Digital Network (ISDN) which are intended for direct application to the ear (e.g. traditional handsets, operators’ headsets) and which provide a magnetic field for coupling to hearing aids. It specifies the level, linearity and frequency dependence of the magnetic field strength produced by the handset and characteristics for the calibrated probe coil. Clause 5 specifies the electro-acoustic performance Characteristics of telephony terminals which are intended for direct application to the ear (e.g. traditional handsets, operators’ headsets) and which provide, at the earphone, additional amplification in the receiving direction compared with the Receiving Loudness Rating (RLR) specified in the requirements of the national system. Clause 6 specifies the electrical characteristics for the electrical coupling of the telephony function, implemented telecommunication terminal equipment, to hearing aids. It specifies the level and fì-equency response relative to the acoustic output at the earphone, also the noise and maximum level. Annex A specifies the measuring method for an acousto-magnetic adapter that converts the acoustic output of an associated telephone receiver to a magnetic field, in accordance with 4.2.1 and 4.2.2, that can be received by the magnetic pick-up coil in a hearing aid.

ITU-T P.370-1996 Referenced Document

• ITU-T G.121-1993 Loudness Ratings (LRs) of National Systems Study Group 12
• ITU-T P.10-1993 Vocabulary of Terms on Telephone Transmission Quality and Telephone Sets - Telephone Transmission Quality Vocabulary and Effects of Transmission Parameters on Customer Opinion of Transmission Quality and Their Assessment (Study Group XII; 18 pp)
• ITU-T P.340-1996 Transmission Characteristics of Hands-Free Telephones - Series P: Telephone Transmission Quality Subscribers' Lines and Sets (Study Group 12; 28 pp)
• ITU-T P.57-1993 Artificial Ears - Telephone Transmission Quality - Objective Measuring Apparatus - Corrigendum 1 (Study Group XII) 16 pp

ITU-T P.370-1996 history

• 1996 ITU-T P.370-1996 Coupling Hearing Aids to Telephone Sets Study Group 12; 23 pp [Superseded: ITU-T P.37 ITU-T P.37]