ITU-T P.342
Transmission characteristics for narrow-band digital loudspeaking and hands-free telephony terminals
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| Organization: | ITU-T |
| Publication Date: | 1 June 2009 |
| Status: | active |
| Page Count: | 28 |
scope:
This Recommendation provides audio performance requirements for hands-free and loudspeaking telephones using, in the telephone narrow-band (300-3400 Hz), the waveform encoding according to [ITU-T G.711] (PCM at both 64 kbit/s and 56 kbit/s) and [ITU-T G.726] (ADPCM 32 kbit/s).
Audio performance requirements for headset terminals are included in [ITU-T P.310]. IP terminals are not included in this Recommendation. Audio performance requirements for digital telephones using coding schemes other than waveform encoding and at bit rates lower than 32 kbit/s are under study.
Document History
ITU-T P.342
June 1, 2009
Transmission characteristics for narrow-band digital loudspeaking and hands-free telephony terminals
This Recommendation provides audio performance requirements for hands-free and loudspeaking telephones using, in the telephone narrow-band (300-3400 Hz), the waveform encoding according to [ITU-T...
May 1, 2000
Transmission Characteristics for Telephone Band (300 - 3400 Hz) Digital Loudspeaking and Hands-Free Telephony Terminals - Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks Subscribers' Lines and Sets
A description is not available for this item.
August 1, 1996
Transmission Characteristics for Telephone Band (300 - 3400 Hz) Digital Loudspeaking and Hands-Free Telephony Terminals - Series P: Telephone Transmission Quality; Subscribers' Lines and Sets
A description is not available for this item.