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GSM 06.12, Digital Cellular Telecommunications System (Phase 2 +); Full Rate Speech; Comfort Noise Aspect for Full Rate Speech Traffic Channels, see www.etsi.org/.
GSM 06.20, Digital Cellular Telecommunications System (Phase 2 +); Half Rate Speech; Half Rate Speech Transcoding, see www.etsi.org/.
GSM 06.21, Digital Cellular Telecommunications System (Phase 2 +); Half Rate Speech; Substitution and Muting of Lost Frame for Half Rate Speech Traffic Channels, see www.etsi.org/.
GSM 06.22, Digital Cellular Telecommunications System (Phase 2 +); Half Rate Speech; Comfort Noise Aspects for Half Rate Speech Traffic Channels, see www.etsi.org/.
GSM 06.31, Digital Cellular Telecommunications System (Phase 2 +); Full Rate Speech; Discontinuous Transmission (DTX) for Full Rate Speech Traffic Channels, see www.etsi.org/.
GSM 06.32, Digital Cellular Telecommunications System (Phase 2 +); Voice Activity Detector (VAD), see www.etsi.org/.
GSM 06.41, Digital Cellular Telecommunications System (Phase 2 +); Half Rate Speech; Discontinuous Transmission (DTX) for Half Rate Speech Traffic Channels, see www.etsi.org/.
GSM 06.42, Digital Cellular Telecommunications System (Phase 2 +); Half Rate Speech; Voice Activity Detector (VAD) for Half Rate Speech Traffic Channels, see www.etsi.org/.
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GSM 06.53, Digital Cellular Telecommunications System (Phase 2 +); ANSI-C Code for the GSM Enhanced Full Rate (EFR) Speech Codec, see www.etsi.org/.
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GSM 06.60, Digital Cellular Telecommunications System (Phase 2 +); Enhanced Full Rate (EFR) Speech Transcoding, see www.etsi.org/.
GSM 06.61, Digital Cellular Telecommunications System (Phase 2 +); Substitution and Muting of Lost Frames for Enhanced Full Rate (EFR) Speech Traffic Channels, see www.etsi.org/.
GSM 06.62, Digital Cellular Telecommunications System (Phase 2 +); Comfort Noise Aspects for Enhanced Full Rate (EFR) Speech Traffic Channels, see www.etsi.org/.
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ITU-T Recommendation G.826, Error Performance Parameters and Objectives for International, Constant Bit Rate Digital Paths at or Above the Primary Rate (1999).
ITU-T Recommendation G.1000, Communications Quality of Service: a Framework and Definitions (2001).
ITU-T Recommendation G.1010, End-User Multimedia QOS Categories (2001).
ITU-T Recommendation I.350, General Aspects of Quality of Service and Network Performance in Digital Networks, Including ISDN (1993).
ITU-T Recommendation I.460, Multiplexing, Rate Adaptation and Support of Existing Interfaces.
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ITU-T Recommendation O.133, Equipment for Measuring the Performance of PCM Encoders and Decoders (1993).
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ITU-T Recommendation P.51, Artificial Mouth (1996).
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ITU-T Recommendation P.57, Artificial Ears (1996).
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ITU-T Recommendation P.78, Subjective Testing Method for Determination of Loudness Ratings in Accordance With Recommendation P.76 (1993).
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ITU-T Recommendation P.84, Subjective Listening Test Method for Evaluating Digital Circuit Multiplication and Packetized Voice Systems (1993).
ITU-T Recommendation P.85, A Method for Subjective Performance Assessment of the Quality of Speech Voice Output Devices (1994).
ITU-T Recommendation P.310, Transmission Characteristics for Telephone Band (300–3400 Hz) Digital Telephones (2000).
ITU-T Recommendation P.311, Transmission Characteristics for Wideband (150–7000 Hz) Digital Handset Telephones (Feb. 1998).
ITU-T Recommendation P.340, Transmission Characteristics and Speech Quality Parameters of Hands-Free Terminals (2000).
ITU-T Recommendation P.341, Transmission Characteristics for Wideband (150–7000 Hz) Digital Hands-Free Telephony Terminals (Feb. 1998).
ITU-T Recommendation P.501, Test Signals for Use in Telephonometry (1996).
ITU-T Recommendation P.502, Objective Test Methods for Speech Communication Systems Using Complex Test Signals (2000).
ITU-T Recommendation P.561, In-Service Non-Intrusive Measurement Device – Voice Service Measurements (1996).
ITU-T Recommendation P.563, Single Ended Method for Objective Speech Quality Assessment in Narrow-Band Telephony Applications (2004).
ITU-T Recommendation P.581, Use of Head and Torso Simulator (HATS) for Hands-Free Terminal Testing (2000).
ITU-T Recommendation P.800, Methods for Subjective Determination of Transmission Quality (Aug. 1996).
ITU-T Recommendation P.810, Modulated Noise Reference Unit (MNRU) (1996).
ITU-T Recommendation P.830, Subjective Performance Assessment of Telephone-Band and Wideband Digital Codecs (Aug. 1996).
ITU-T Recommendation P.831, Subjective Performance Evaluation of Network Echo Cancellers (1998).
ITU-T Recommendation P.832, Subjective Performance Evaluation of Hands-Free Terminals (2000).
ITU-T Recommendation P.861, Objective Quality Measurement of Telephone-Band (300–3400 Hz) Speech Codecs (Feb. 1998).
ITU-T Recommendation P.862, Perceptual Evaluation of Speech Quality (PESQ): an Objective Method for End-to-End Speech Quality Assessment of Narrow-Band Telephone Networks and Speech Codecs (2001).
ITU-T Recommendation Q.23, Technical Features of Push-Button Telephone Sets (1988).
ITU-T Recommendation Q.24, Multi-Frequency Push-Button Signal Reception (1988).
ITU-T Recommendation Q.35, Technical Characteristics of Tones for the Telephone Service (1988).
ITU-T Recommendation Q.50, Q.50 Signalling Between Circuit Multiplication Equipments (CME) and International Switching Centres (ISC) (1993).
ITU-T Recommendation T.4, Standardization of Group 3 Facsimile Terminals for Document Transmission (1996).
ITU-T Recommendation T.30, Procedures for Document Facsimile Transmission in the General Switched Telephone Network (1996).
ITU-T Recommendation V.8, Procedures for Starting Sessions of Data Transmission over the Public Switched Telephone Network (1998).
ITU-T Recommendation V.18, Operational and Interworking Requirements for DCEs Operating in the Text Telephone Mode (2000).
ITU-T Recommendation V.25, Automatic Answering Equipment and General Procedures for Automatic Calling Equipment on the General Switched Telephone Network Including Procedures for Disabling of Echo Control Devices for Both Manually and Automatically Established Calls (1996).
ITU-T Recommendation V.110, Support of Data Terminal Equipments (DTEs) with V-Series Interfaces by an Integrated Services Digital Network.
ITU-T Recommendation Y.1231, IP Access Network Architecture (2000).
ITU-T Recommendation Y.1540, Internet Protocol Data Communication Service – IP Packet Transfer and Availability Performance Parameters (2000).
ITU-T Recommendation Y.1541, Network Performance Objectives for IP-Based Services (2001).
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