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2005-2008 ITU-T SG 12 Recommendations
G series : Transmission systems and media, digital systems and networks
G100-G199 : International telephone connections and circuits
G100-G109 : General definitions
G.100/P.10 : Vocabulary for performance and quality of service
G.100.1 : The use of the decibel and of relative levels in speechband telecommunications
G.101 : The transmission plan
G.102 : Transmission performance objectives and Recommendations
G.103 : Hypothetical reference connections
G.105 : Hypothetical reference connection for crosstalk studies
G.107 : The E-model, a computational model for use in transmission planning
G.108 : Application of the E-model: A planning guide
G.108.1 : Guidance for assessing conversational speech transmission quality effects not covered by the E-model
G.108.2 : Transmission planning aspects of echo cancellers
G.109 : Definition of categories of speech transmission quality
G110-G119 : General Recommendations on the transmission quality for an entire international telephone connection
G.111 : Loudness ratings (LRs) in an international connection
G.113 : Transmission impairments due to speech processing
G.114 : One-way transmission time
G.115 : Mean active speech level for announcement and speech synthesis systems
G.116 : Transmission performance objectives applicable to end-to-end international connections
G.117 : Transmission aspects of unbalance about earth
G120-G129 : General characteristics of national systems forming part of international connections
G.120 : Transmission characteristics of national networks
G.121 : Loudness ratings (LRs) of national systems
G.122 : Influence of national systems on stability and talker echo in international connections
G.126 : Listener echo in telephone networks
G130-G139 : General characteristics of the 4-wire chain formed by the international circuits and national extension circuits
G.131 : Talker echo and its control
G.136 : Application rules for Automatic Level Control Devices
G140-G149 : General characteristics of the 4-wire chain of international circuits; international transit
G.142 : Transmission characteristics of exchanges
G170-G179 : Transmission plan aspects of special circuits and connections using the international telephone connection network
G.172 : Transmission plan aspects of international conference calls
G.173 : Transmission planning aspects of the speech service in digital public land mobile networks
G.174 : Transmission performance objectives for terrestrial digital wireless systems using portable terminals to access the PSTN
G.175 : Transmission planning for private/public network interconnection of voice traffic
G.176 : Planning guidelines for the integration of ATM technology into networks supporting voiceband services
G.177 : Transmission planning for voiceband services over hybrid Internet/PSTN connections
G1000-G1999 : Quality of service and performance – Generic and user-related aspects
G.1000 : Communications Quality of Service: A framework and definitions
G.1010 : End-user multimedia QoS categories
G.1020 : Performance parameter definitions for quality of speech and other voiceband applications utilizing IP networks
G.1030 : Estimating end-to-end performance in IP networks for data applications
G.1040 : Network contribution to transaction time
G.1050 : Network model for evaluating multimedia transmission performance over Internet Protocol
G.1070 : Opinion model for video-telephony applications
G.1080 (draft) : Quality of experience requirements for IPTV services
G.1081 (draft) : Performance monitoring points for IPTV
I series : Integrated services digital network
I300-I399 : Overall network aspects and functions
I350-I359 : Performance objectives
I.350 : General aspects of quality of service and network performance in digital networks, including ISDNs
I.352 : Network performance objectives for connection processing delays in an ISDN
I.353 : Reference events for defining ISDN and B-ISDN performance parameters
I.354 : Network performance objectives for packet-mode communication in an ISDN
I.355 : ISDN 64 kbit/s connection type availability performance
I.356 : B-ISDN ATM layer cell transfer performance
I.357 : B-ISDN semi-permanent connection availability
I.358 : Call processing performance for switched virtual channel connections (VCCs) in a B-ISDN
I.359 : Accuracy and dependability of ISDN 64 kbit/s circuit-mode connection types
I370-I399 : General network requirements and functions
I.371 : Traffic control and congestion control in B-ISDN
I.378 : Traffic control and congestion control at the ATM Adaptation Layer type 2
I.381 : ATM adaptation layer (AAL) Performance
P series : Telephone transmission quality, telephone installations, local line networks
P10-P19 : Vocabulary and effects of transmission parameters on customer opinion of transmission quality
P.10/G.100 : Vocabulary for performance and quality of service
P.11 : Effect of transmission impairments
P.16 : Subjective effects of direct crosstalk; thresholds of audibility and intelligibility
P30-P39 : Subscribers' lines and sets
P.32 : Evaluation of the efficiency of telephone booths and acoustic hoods
P40-P49 : Transmission standards
P.48 : Specification for an intermediate reference system
P50-P59 : Objective measuring apparatus
P.50 : Artificial voices
P.51 : Artificial mouth
P.52 : Volume meters
P.54 : Sound level meters (apparatus for the objective measurement of room noise)
P.55 : Apparatus for the measurement of impulsive noise
P.56 : Objective measurement of active speech level
P.57 : Artificial ears
P.58 : Head and torso simulator for telephonometry
P.59 : Artificial conversational speech
P60-P69 : Objective electro-acoustical measurements
P.61 : Methods for the calibration of condenser microphones
P.64 : Determination of sensitivity/frequency characteristics of local telephone systems
P70-P79 : Measurements related to speech loudness
P.75 : Standard conditioning method for handsets with carbon microphones
P.76 : Determination of loudness ratings; fundamental principles
P.78 : Subjective testing method for determination of loudness ratings in accordance with Recommendation P.76
P.79 : Calculation of loudness ratings for telephone sets
P80-P89 : Methods for objective and subjective assessment of quality
P.82 : Method for evaluation of service from the standpoint of speech transmission quality
P.85 : A method for subjective performance assessment of the quality of speech voice output devices
P300-P399 : Subscribers' lines and sets
P.300 : Transmission performance of group audio terminals (GATs)
P.310 : Transmission characteristics for telephone band (300-3400 Hz) digital telephones
P.311 : Transmission characteristics for wideband (150-7000 Hz) digital handset telephones
P.313 : Transmission characteristics for cordless and mobile digital terminals
P.330 : Speech processing devices for acoustic enhancement
P.340 : Transmission characteristics and speech quality parameters of hands-free terminals
P.341 : Transmission characteristics for wideband (150-7000 Hz) digital hands-free telephony terminals
P.342 : Transmission characteristics for telephone band (300-3400 Hz) digital loudspeaking and hands-free telephony terminals
P.350 : Handset dimensions
P.360 : Efficiency of devices for preventing the occurrence of excessive acoustic pressure by telephone receivers and assessment of daily noise exposure of telephone users
P.370 : Coupling hearing aids to telephone sets
P.380 : Electro-acoustic measurements on headsets
P500-P599 : Objective measuring apparatus
P.501 : Test signals for use in telephonometry
P.502 : Objective test methods for speech communication systems using complex test signals
P.505 : One-view visualization of speech quality measurement results
P.561 : In-service non-intrusive measurement device – Voice service measurements
P.562 : Analysis and interpretation of INMD voice-service measurements
P.563 : Single-ended method for objective speech quality assessment in narrow-band telephony applications
P.564 : Conformance testing for voice over IP transmission quality assessment models
P.581 : Use of head and torso simulator (HATS) for hands-free terminal testing
P800-P899 : Methods for objective and subjective assessment of quality
P.800 : Methods for subjective determination of transmission quality
P.800.1 : Mean Opinion Score (MOS) terminology
P.805 : Subjective evaluation of conversational quality
P.810 : Modulated noise reference unit (MNRU)
P.830 : Subjective performance assessment of telephone-band and wideband digital codecs
P.831 : Subjective performance evaluation of network echo cancellers
P.832 : Subjective performance evaluation of hands-free terminals
P.833 : Methodology for derivation of equipment impairment factors from subjective listening-only tests
P.833.1 : Methodology for the derivation of equipment impairment factors from subjective listening-only tests towards wideband speech codecs
P.834 : Methodology for the derivation of equipment impairment factors from instrumental models
P.835 : Subjective test methodology for evaluating speech communication systems that include noise suppression algorithm
P.840 : Subjective listening test method for evaluating circuit multiplication equipment
P.851 : Subjective quality evaluation of telephone services based on spoken dialogue systems
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
P.862.1 : Mapping function for transforming P.862 raw result scores to MOS-LQO
P.862.2 : Wideband extension to Recommendation P.862 for the assessment of wideband telephone networks and speech codecs
P.862.3 : Application guide for objective quality measurement based on Recommendations P.862, P.862.1 and P.862.2
P.880 : Continuous evaluation of time-varying speech quality
P1000-P1099 : Transmission performance and QoS aspects of IP end-points
P.1010 : Fundamental voice transmission objectives for VoIP terminals and gateways
P1100-P1199 : Communications between cars
P.1100 (draft) : Narrowband hands-free communication in motor vehicles
P supplements : Supplements to the Series P Recommendations
P Suppl. 10 : Considerations relating to transmission characteristics for analogue handset telephones
P Suppl. 16 : Guidelines for placement of microphones and loudspeakers in telephone conference rooms and for group audio terminals (GATs)
P Suppl. 20 : Examples of measurements of handset receive-frequency responses: dependence on earcap leakage losses
P Suppl. 23 : ITU-T coded-speech database
P Suppl. 24 : Parameters describing the interaction with spoken dialogue systems
Y series : Global information infrastructure, Internet protocol aspects and next-generation networks
Y1000-Y1999 : Internet protocol aspects
Y1200-Y1299 : Architecture, access, network capabilities and resource management
Y.1221 : Traffic control and congestion control in IP-based networks
Y.1222 : Traffic control and congestion control in Ethernet-based networks
Y.1223 : Interworking guidelines for transporting assured IP flows
Y1500-Y1599 : Quality of service and network performance
Y.1530 : Call processing performance for voice service in hybrid IP networks
Y.1531 : SIP-based call processing performance
Y.1540 : Internet protocol data communication service – IP packet transfer and availability performance parameters
Y.1541 : Network performance objectives for IP-based services
Y.1542 : Framework for achieving end-to-end IP performance objectives
Y.1543 : Measurements in IP networks for inter-domain performance assessment
Y.1544 : Multicast IP performance parameters
Y.1560 : Parameters for TCP connection performance in the presence of middleboxes
Y.1561 : Performance and availability parameters for MPLS networks
Y.1562 : Framework for higher-layer protocol performance parameters and their measurement
Y.1563 (draft) : Ethernet frame transfer and availability performance


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Updated : 2008-11-20