Content for TS 43.050 Word version: 16.0.0
3 Transmission performance
A Considerations on the Acoustic Interface of the Mobile Station
B Test considerations
C Transmission requirements testing
D MS delay requirement definition
E Adaptive gain control
$ Change History
3 Transmission performance
3.1 Overall Loss/Loudness ratings Word‑p. 13
3.1.1 Connections with handset MSs
3.1.2 Connections with handsfree MSs
3.1.3 Connections with headset MSs
3.2 Stability Loss Word‑p. 14
3.3 Delay
3.3.1 General
3.3.2 Sources of delay
3.3.3 Effects of delay
3.3.4 Allocation of delay to the PLMN Word‑p. 15
3.3.4.1 Allocation of delay to the PLMN when using a full rate system
3.3.4.2 Allocation of delay to the PLMN when using a half rate system
3.3.5 Delay of various network configurations
3.3.5.1 National and international connections with no echo control in the PSTN (reference configurations A)
3.3.5.2 National and international connections with echo control in the PSTN (reference configurations B)
3.3.5.3 Connections where re routeing leads to a significant increase in transmission path length (reference configurations C) Word‑p. 16
3.3.6 Delay related requirements on the MS
3.4 Echo
3.4.1 General
3.4.2 Electrical echo control in the PLMN (Reference configurations A) Word‑p. 17
3.4.3 Acoustic echo control in the PLMN
3.4.4 Interaction between tandem echo control devices (reference configurations B & C)
3.5 Clipping
3.5.1 General
3.5.2 Properties of voice switches in the PLMN Word‑p. 18
3.5.3 Problems of tandem voice switching
3.6 Idle channel noise (handset and headset MS)
3.7 Noise contrast
3.7.1 General
3.7.2 Elements of a PLMN which can cause noise contrast impairment Word‑p. 19
3.7.3 Reduction of noise contrast
3.7.3.1 Reduction of noise contrast by limiting the noise received by the microphone
3.7.3.2 Reduction of noise contrast by insertion of comfort noise
3.7.4 Consequence of the introduction of high comfort noise levels on other voice operated devices
3.8 Sensitivity/frequency characteristics
3.8.1 Headset and Handset MSs
3.8.2 Handsfree MS Word‑p. 21
3.9 Distortion (handset and headset MS)
3.10 Sidetone (handset and headset MS) Word‑p. 22
3.11 Not used
3.12 Requirements for information tones
3.13 Crosstalk Word‑p. 23
3.14 MS Ambient Noise Rejection
A Considerations on the Acoustic Interface of the Mobile Station Word‑p. 32
B (Normative) Test considerations Word‑p. 33
C (Normative) Transmission requirements testing Word‑p. 34
C.1 Not usedC.2 Not usedC.3 Not usedC.4 Not usedC.5 Variation of gain with input level
C.6 Not used
C.7 Not used
C.8 Not used
C.9 Not used
C.10 Delay for handsfree MS
D (Normative) MS delay requirement definition Word‑p. 36
D.1 Full rate MS delay requirement definition
D.2 Half rate MS delay requirement definition Word‑p. 37
E Adaptive gain control Word‑p. 38
$ Change History Word‑p. 39
