Content for TS 26.132 Word version: 18.2.0
2 References
3 Definitions, symbols and abbreviations
4 Interface Definitions
4.1 General
4.2 Air interfaces
4.3 Acoustical interfaces
4.4 Electrical interfaces
5 Test configurations
5.1 Setup for terminals
5.2 Setup of the electrical interfaces of test equipment
5.3 Accuracy of test equipment
5.4 Test signals
6 Test conditions
6.1 Environmental conditions
6.2 System simulator conditions
7 Narrowband telephony transmission performance test methods
7.1 Applicability
7.2 Overall loss/loudness ratings
7.3 Idle channel noise (handset, headset and electrical interface UE)
7.4 Sensitivity/frequency characteristics
7.5 Sidetone characteristics
7.6 Stability loss
7.7 Acoustic echo control
7.8 Distortion
7.10 Delay
7.11 Echo control characteristics
7.12 Send speech quality and noise intrusiveness in the presence of ambient noise
7.13 Jitter buffer management behaviour (handset, headset and electrical interface UE)
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2 References p. 13
3 Definitions, symbols and abbreviations p. 15
3.1 Definitions p. 15
3.2 Abbreviations p. 16
4 Interface Definitions p. 17
4.1 General |R17| p. 17
4.2 Air interfaces |R18| p. 17
4.3 Acoustical interfaces |R18| p. 17
4.4 Electrical interfaces |R17| p. 18
5 Test configurations p. 18
5.1 Setup for terminals p. 18
5.1.1 Setup for handset terminals p. 19
5.1.2 Setup for headset terminals p. 20
5.1.3 Setup for hands-free terminals p. 20
5.1.3.1 Void
5.1.3.2 Desktop hands-free p. 20
5.1.3.3 Hand-held hands-free p. 20
5.1.3.4 Softphone including speakers and microphone |R10| p. 22
5.1.3.5 Softphone with separate speakers |R10| p. 24
5.1.4 Position and calibration of HATS p. 28
5.1.5 Test setup for quality in the presence of ambient noise measurements |R11| p. 28
5.1.6 Test setup for electrical interfaces |R17| p. 32
5.2 Setup of the electrical interfaces of test equipment p. 35
5.3 Accuracy of test equipment p. 36
5.4 Test signals p. 37
5.5 Void
6 Test conditions p. 38
7 Narrowband telephony transmission performance test methods p. 39
7.1 Applicability p. 39
7.2 Overall loss/loudness ratings p. 39
7.2.1 General p. 39
7.2.2 Connections with handset UE p. 40
7.2.2.1 Sending loudness rating (SLR) p. 40
7.2.2.2 Receiving loudness rating (RLR) p. 40
7.2.2.3 Receiving loudness rating (RLR) in the presence of background noise |R15| p. 40
7.2.3 Connections with desktop hands-free UE p. 41
7.2.4 Connections with hand-held hands-free UE p. 42
7.2.5 Connections with headset UE p. 43
7.2.6 Connections with electrical interface UE |R17| p. 43
7.3 Idle channel noise (handset, headset and electrical interface UE) p. 44
7.3.1 Sending (handset and headset UE) p. 44
7.3.2 Receiving (handset and headset UE) p. 45
7.3.3 Sending (electrical interface UE) |R17| p. 45
7.3.4 Receiving (electrical interface UE) |R17| p. 45
7.4 Sensitivity/frequency characteristics p. 45
7.4.0 General |R17| p. 45
7.4.1 Handset and headset UE sending p. 45
7.4.2 Handset and headset UE receiving p. 46
7.4.3 Desktop hands-free UE sending p. 46
7.4.4 Desktop hands-free UE receiving p. 46
7.4.5 Hand-held hands-free UE sending p. 46
7.4.6 Hand-held hands-free UE receiving p. 47
7.4.7 Electrical interface UE sending |R17| p. 47
7.4.8 Electrical interface UE receiving |R17| p. 47
7.5 Sidetone characteristics p. 48
7.5.1 Connections with handset UE p. 48
7.5.1.0 General |R17| p. 48
7.5.1.1 Void
7.5.1.2 Connections with handset UE - HATS method |R7| p. 48
7.5.2 Headset UE p. 48
7.5.3 Hands-free UE (all categories) p. 49
7.5.3a Electrical interface UE |R17| p. 49
7.5.4 Sidetone delay for handset, headset or electrical interface UE |R11| p. 49
7.6 Stability loss p. 50
7.7 Acoustic echo control p. 51
7.7.1 General p. 51
7.7.2 Acoustic echo control in a hands-free UE p. 52
7.7.3 Acoustic echo control in a handset UE p. 52
7.7.4 Acoustic echo control in a headset UE p. 52
7.7.5 Acoustic echo control in an electrical interface UE |R17| p. 52
7.8 Distortion p. 52
7.8.1 Sending distortion p. 52
7.8.2 Receiving distortion p. 53
7.9 Void
7.10 Delay |R11| p. 55
7.10.0 UE Delay Measurement Methodologies p. 55
7.10.1 Delay in sending direction (Handset UE) p. 56
7.10.1a Delay in sending direction (headset UE) p. 56
7.10.1b Delay in sending direction (electrical interface UE) |R17| p. 57
7.10.2 Delay in receiving direction (handset UE) p. 57
7.10.2a Delay in receiving direction (headset UE) p. 58
7.10.2b Delay in receiving direction (electrical interface UE) |R17| p. 59
7.10.3 Delay in sending + receiving direction using "echo" method (handset UE) p. 59
7.10.3a Delay in sending + receiving direction using "echo" method (headset UE) p. 61
7.10.3b Delay in sending + receiving direction using "echo" method (electrical interface UE) |R17| p. 61
7.10.4 Delay and speech quality in conditions with packet arrival time variations and packet loss (handset, headset, electrical interface UE) |R12| p. 61
7.10.4.1 Delay in sending direction p. 61
7.10.4.2 Delay in receiving direction p. 61
7.10.4.3 Speech quality loss in conditions with packet arrival time variations and packet loss p. 62
7.10.5 UE send clock accuracy |R12| p. 63
7.10.6 UE receiving with clock skew |R12| p. 63
7.11 Echo control characteristics |R11| p. 63
7.12 Send speech quality and noise intrusiveness in the presence of ambient noise |R11| p. 66
7.12.1 Handset UE |R13| p. 66
7.12.2 Hand-held hands-free UE |R13| p. 68
7.12.3 Electrical interface UE |R17| p. 69
7.13 Jitter buffer management behaviour (handset, headset and electrical interface UE) |R14| p. 70
