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ITU-T P.310

Transmission characteristics for narrow-band digital handset and headset telephones

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Organization: ITU-T
Publication Date: 1 June 2009
Status: active
Page Count: 35
scope:

This Recommendation deals with sending and receiving frequency response, loudness rating, noise, distortion, out-of-band signals, linearity, sidetone, echo and delay of narrow-band (300-3400 Hz) digital handset and headset telephones using "Waveform" encoding according to [ITU-T G.711] (PCM at both 64 and 56 kbit/s) and [ITU-T G.726] (ADPCM, 32 kbit/s). IP terminals and wireless headsets are not covered in this Recommendation.

The use of digital telephones using [ITU-T G.728] (LD-CELP, 16 kbit/s) and mobile/cordless telephones are under study.

Requirements applicable to low acoustic impedance transducers and digital telephone sets using non-linear techniques are under study.

The requirements listed in this Recommendation should also be used as the basis of requirements for other "waveform" encoding schemes.

The values given in this Recommendation should be used for developing specifications which will include assigning tolerances, etc.

Document History

ITU-T P.310
June 1, 2009
Transmission characteristics for narrow-band digital handset and headset telephones
This Recommendation deals with sending and receiving frequency response, loudness rating, noise, distortion, out-of-band signals, linearity, sidetone, echo and delay of narrow-band (300-3400 Hz)...
March 1, 2003
Transmission characteristics for telephone band (300-3400 Hz) digital telephones SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Subscribers' lines and sets
A description is not available for this item.
May 1, 2000
Transmission Characteristics for Telephone Band (300-3400 Hz) Digital Telephones Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks Subsrcibers' Lines and Sets
A description is not available for this item.
January 1, 1996
Transmission Characteristics for Telephone Band (300-3400 Hz) Digital Telephones - Telephone Transmission Quality Subscribers' Lines and Sets (Study Group 12) 29 pp
A description is not available for this item.

References

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