This Recommendation defines a set of performance parameters for packet networks and end terminals that can assist in quantifying the end-to-end quality of speech and other voiceband applications. It is largely focused on quality impairments resulting from delay variation and packet loss which are peculiar to IP and other packet-based technologies, and which do not appear in traditional TDM networks. It discusses the interactions and trade-offs among these packet impairments, and describes mechanisms such as de-jitter buffers and packet loss concealment for reducing their effects on the quality of speech and other applications.
ITU-T G.1020 FRENCH-2006 Referenced Document
ITU-T G.107-2005 The E-model, a computational model for use in transmission planning Study Group 12
ITU-T G.113-2001 Transmission Impairments Due to Speech Processing - Series G: Transmission Systems and Media, Digital Systems and Networks International Telephone Connections and Circuits - General Recommendations on the Transmission Quality for an Entire International
ITU-T G.177-1999 Transmission Planning for Voiceband Services over Hybrid Internet/PSTN Connections - Series G: Transmission Systems and Media Digital Systems and Networks International Telephone Connections and Circuits - Transmission Plan Aspects of Special Circuits and
ITU-T I.356-2000 B-ISDN ATM Layer Cell Transfer Performance Series I: Integrated Services Digital Network Overall Network Aspects and Functions - Performance Objectives Study Group 13
ITU-T P.1010-2004 Fundamental Voice Transmission Objectives for VoIP Terminals and Gateways SERIES P: TELEPHONE TRANSMISSION QUALITY TELEPHONE INSTALLATIONS LOCAL LINE NETWORKS Transmission Performance and QoS Aspects of IP End-Points
ITU-T P.51-1996 Artificial Mouth - Series P: Telephone Transmission Quality Objective Measuring Apparatus Study Group 12; 14 pp
ITU-T Y.1540-2002 Internet protocol data communication service ?IP packet transfer and availability performance parameters SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE AND INTERNET PROTOCOL ASPECTS Internet protocol aspects ?Quality of service and network performance*， 2024-04-19 Update
ITU-T Y.1541-2006 Network performance objectives for IP-based services (Study Group 12)
ITU-T G.1020 FRENCH-2006 history
2006ITU-T G.1020 FRENCH-2006 Performance parameter definitions for quality of speech and other voiceband applications utilizing IP networks study group 12