Tandberg 1500MXP Manuel d'utilisateur Page 167
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Noté. / 5. Basé sur avis des utilisateurs
Administrator Settings
155
4.5.3 Echo Control
Microphone
The microphone input has an acoustic echo canceller. In addition to echo cancellation, the
system has built-in noise reduction (NR). NR reduces constant background noise (e.g. noise from
air-conditioning systems, cooling fans etc.). In addition, a high pass filter (Humfilter) reduces very
low frequency noise.
On
Echo control is normally set to On to prevent the far end from hearing their own
audio. Once selected, echo cancellation is active at all times. The echo canceller
continuously adjusts itself to the audio characteristics of the room and
compensates for any changes it detects in the audio environment. If the changes in
the audio conditions are very significant the echo canceller may take a second or
two to re-adjust.
Off
Turns off the echo canceller.
On+NR
Activates both Echo Control and Noise Reduction.
Note that it is your echo canceller that improves the audio quality experienced by the other
site. When you hear an echo of your own audio it is most likely the far end’s echo canceller
that is malfunctioning.
Tips for improving the echo canceller performance:
It is recommended to place the microphone between 1 and 2 meters away from the
persons speaking.
Place the microphone as far as possible from noise sources.
Reduce the volume setting. Ensure that the loudspeakers do not distort the audio.
The echo canceller tries to estimate the echo path from the speaker system to the
microphones. Moving objects change this path; therefore try to avoid moving objects. Be
especially aware of large objects and objects placed close to either the microphone or the
speaker system as these objects will cause severe changes to the echo path.
Avoid putting paper sheets etc. on the microphone.
Avoid moving the microphone or loudspeaker.
In the presence of low frequency noise, enable the noise reduction (NR).
- User Manual 1
- Trademarks and Copyright 2
- Environmental Issues 5
- Operator Safety Summary 6
- Contact us 8
- Table of Contents 9
- 1 Introduction 13
- - TANDBERG First 15
- 1.1 At a Glance 16
- 1.2 Menu Structure 18
- 2 Installation 20
- 2.1 Unpacking 21
- 2.2 Connecting Cables 22
- 2.3 Monitor Configuration 23
- 2.4 System Configuration 25
- 3 General Use 28
- 3.1 The Welcome Screen 29
- 3.2 Using the Remote Control 30
- ** Ordered separately 33
- 3.2.1 Navigation 34
- 3.2.2 Selfview 35
- 3.2.3 Layout 37
- 3.2.4 Mic Off 38
- 3.2.5 Volume + and 39
- 3.2.7 Touch Tones 41
- 3.3 On-screen Indicators 42
- 3.4 Using the Menu 44
- 3.5 Make a Call 45
- 3.5.1 Place Video Call 46
- 3.5.2 Place Telephone Call 47
- 3.5.3 Add Call 48
- General Use 49
- 3.5.4 Call Settings 50
- 3.5.5 Streaming 51
- 3.6 Answer an incoming call 53
- 3.7 End Call 54
- 3.8 Standby 55
- 3.8.3 Do Not Disturb 58
- 3.9 Phone Book 59
- 3.9.1 Call Log 60
- 3.9.2 My Contacts 61
- 3.9.2.1 Add New Contact 63
- 3.9.2.3 Edit Contact 66
- 3.9.2.4 Delete Contact 67
- 3.9.3 Global Contacts 68
- 3.9.3.1 Up one Level 69
- 3.9.3.2 Search 70
- 3.10 Camera Control 72
- 3.10.1 Far End Control 73
- 3.11 Presentation 74
- 3.11.1 Presentation Key 75
- 3.11.2 Presentation Menu 76
- 3.11.5 Dual Stream (DuoVideo 79
- /H.239) 79
- 3.11.6 Take New Snapshot 80
- 3.11.7 Display Snapshot 81
- 3.12 Conference Services 82
- 3.12.2 Conference Layout 86
- 3.12.3 Terminal Names 87
- 3.12.4 Chair Control 88
- Participant 89
- 3.12.8 Terminate Meeting 92
- 3.13 Control Panel 94
- 3.13.1 Diagnostics 95
- 3.13.2 System Information 96
- 3.13.3 Channel Status 97
- 3.13.4 Call Status 98
- 3.13.5 System Selftest 99
- Screen Settings 100
- 3.13.8 Warnings 105
- 3.13.9 Text Chat 107
- 3.13.10 Audio Demo 108
- 3.13.12 Restart 110
- 3.13.13 User Guide 111
- 4 Administrator Settings 112
- 4.1 General Settings 113
- 4.1.1 Language 114
- 4.1.2 System Name 115
- 4.1.3 International Name 116
- 4.1.4 Auto Answer 117
- 4.1.5 Phone Book Settings 118
- 4.1.7 Permissions 120
- 4.1.8 Screen Settings 122
- 4.1.9 Software Options 127
- 4.2 Menu Settings 129
- 4.2.1 Input Editor Language 130
- 4.2.2 Menu Timeout in Call 131
- 4.2.3 Balloon Help 132
- 4.2.5 Kiosk Mode Settings 134
- 4.2.6 Startup 137
- 4.2.7 Icons 139
- 4.3 Presentation Settings 140
- 4.3.1 Presentation Start 141
- 4.3.2 H.239 142
- 4.3.3 Call Video Source 143
- 4.3.4 Presentation Source 144
- 4.3.5 Snapshot Source 145
- 4.3.6 Auto-Display Snapshot 146
- 4.3.7 PIP Appearance 147
- 4.3.8 PIP Placing 148
- 4.3.9 VNC Settings 149
- 4.4 Call Quality 150
- 4.4.1 Video Algorithm 151
- 4.4.2 Audio Algorithm 152
- 4.4.4 Natural Video 154
- 4.4.6 Video Quality 156
- 4.4.6.2 Native Resolutions 157
- 4.4.7 Default Call Settings 159
- 4.5 Audio 162
- 4.5.1 Inputs 163
- 4.5.2 Outputs 166
- 4.5.3 Echo Control 167
- 4.5.4 Stereo Settings 168
- 4.6 Video 171
- 4.6.1 MCU Status Line 172
- 4.6.3 Web Snapshots 174
- TANDBERG 1500 MXP 176
- 4.6.5 Video Name 177
- 4.7 Security 178
- 4.7.1 Encryption 179
- 4.7.2 Encryption Mode 180
- 4.7.3 Passwords 181
- 4.8 Network 182
- 4.8.1 ISDN-BRI Settings 183
- Advanced ISDN Settings 184
- 4.8.2 LAN Settings 185
- 4.8.2.1 IP Settings 186
- DNS Settings 188
- 4.8.2.2 H.323 Settings 189
- Gatekeeper Settings 190
- CallManager Settings 191
- Advanced H.323 Settings 192
- 4.8.2.3 SIP Settings 194
- Authentication 195
- 4.8.2.5 SNMP Settings 199
- 4.8.2.6 IP Services 200
- 4.8.2.7 Quality of Service 201
- 4.8.2.8 IEEE 802.1x 203
- 4.8.3 Network Profiles 204
- 4.8.4 Data Port 205
- 5 Peripheral Equipment 207
- 5.1 Interfaces 208
- 5.1.2 Audio 211
- 5.1.3 Network 213
- 5.1.4 Data port 214
- 5.2 Document Camera 215
- 5.3 DVD / VCR 216
- 5.4 Additional Cameras 217
- 5.5 Additional Microphones 218
- 5.6 The TANDBERG DNAM and 219
- Speakers 219
- TANDBERG 3000 MXP Profile: 221
- 5.7 Stereo Speaker Kit 223
- 5.8 Telephone Add-On 225
- 5.9 Dual Monitor 226
- 5.11 VESA Display Power 228
- Management 228
- 5.12 Digital Monitor Power 229
- Data (EDID) 230
- 6 Appendices 232
- 6.1 Appendix 1 233
- Appendices 235
- 6.2 Appendix 2 236
- 6.3 Appendix 3 239
- 6.4 Appendix 4 240
- 6.5 Appendix 5 242
- Services 243
- SNMP Security alert 243
- 6.6 Appendix 6 245
- 6.7 Appendix 7 246
- 6.8 Appendix 8 247
- 6.9 Appendix 9 248
- 6.10 Appendix 10 249
- 6.11 Appendix 11 250
- 6.12 Appendix 12 253
- 6.13 Appendix 13 255
- 6.14 Appendix 14 256
- 6.15 Appendix 15 258
- 6.16 Appendix 16 264
- 7 Glossary 265
- Glossary 273
- 8 Index 274
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