This Recommendation provides the speech transmission requirements for Group Audio Terminals (GATS). The associated test methods for verifying the specified performances are contained in Annex A. An in-situ procedure for checking and aligning GAT terminals in the field is provided in Appendix I.
ITU-T P.300 FRENCH-2001 Referenced Document
ITU-T G.122-1993 Influence of National Systems on Stability and Talker Echo in International Connections Study Group 12
ITU-T P.10-1998 Vocabulary of Terms on Telephone Transmission Quality and Telephone Sets - Series P: Telephone Transmission Quality@ Telephone Installations@ Local Line Networks Vocabulary and Effects of Transmission Parameters on Customer Opinion of Transmission Quality
ITU-T P.310-2000 Transmission Characteristics for Telephone Band (300-3400 Hz) Digital Telephones Series P: Telephone Transmission Quality@ Telephone Installations@ Local Line Networks Subsrcibers' Lines and Sets (Study Group 12)
ITU-T P.311-1998 Transmission Characteristics for Wideband (150-7000 Hz) Digital Handset Telephones - Series P: Telephone Transmission Quality@ Telephone Installations@ Local Line Networks - Subscribers' Lines and Sets (Study Group 12; 22 pp)
ITU-T P.340-2000 Transmission Characteristics and Speech Quality Parameters of Hands-Free Terminals Series P: Telephone Transmission Quality Telephone Installations Local Line Networks Subscribers' Lines and Sets Study Group 12; Covering Note: March 31 2004
ITU-T P.341-1998 Transmission Characteristics for Wideband (150-7000 Hz) Digital Hands-Free Telephony Terminals - Series P: Telephone Transmission Quality@ Telephone Installations@ Local Line Networks - Subscribers' Lines and Sets (Study Group 12; 23 pp)
ITU-T P.342-2000 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 Study Group 12
ITU-T P.50-1999 Artificial Voices Study Group 12; Covering note: 5/25/2000
ITU-T P.51-1996 Artificial Mouth - Series P: Telephone Transmission Quality Objective Measuring Apparatus Study Group 12; 14 pp
ITU-T P.57-1996 Artificial Ears - Series P: Telephone Transmission Quality Objective Measuring Apparatus (Study Group 12; 32 pp)
ITU-T P.79-1999 Calculation of Loudness Ratings for Telephone Sets - Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks - Measurements Related to Speech Loudness Study Group 12; COVERING NOTE: 05/25/2000; COVERING NOTE: 01/27/2005