Motorola MC55N0 User's Guide Page 206
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B - 4 MC55 User Guide
•
Only the Avaya softphone is currently supported.
Acoustic Echo Cancellation
Acoustic Echo occurs during a voice call when the audio from the earpiece enters the microphone of the same
device. This results in the person at the other end hearing back a delayed version of his/her own voice (“Echo”).
Needless to say, “Echo” is not desirable, and needs to be suppressed. This is the functionality performed by the
Acoustic Echo Canceller (AEC). There are two approaches to suppressing the Echo:
•
Turn the Acoustic Echo Canceller (AEC) on permanently. This approach is not very efficient because the
device consumes more power when the AEC is on.
•
Turn the Acoustic Echo Canceller (AEC) on only when there is an ongoing call.
VQM follows the second of the two approaches mentioned above.
VQM automatically turns on the Acoustic Echo Canceller (AEC) when the mobile device is in a VoWiFi call. When
the call is terminated, VQM turns the AEC off. Note that the AEC is turned on for speakerphone and handset
modes and does not get turned on for Bluetooth headset mode. Bluetooth headsets typically have an Echo
Canceller built in. Turning the AEC on only while on a call saves battery power, compared to leaving the AEC
turned on permanently.
The AEC is not turned on for Cellular calls because the WWAN phone application has a built-in echo canceller.
Disabling VQM
To disable VQM perform a warm boot.
- User Guide 1
- Revision History 5
- Table of Content 7
- Table of Contents vii 9
- Table of Contents ix 11
- Table of Contents xi 13
- About This Guide 15
- Configurations 16
- About This Guide xv 17
- Fusion Software 18
- Phone Software 18
- Chapter Descriptions 19
- Notational Conventions 19
- Related Documents 20
- Service Information 20
- Chapter 1 Getting Started 21
- Unpacking 22
- Accessories 23
- Getting Started 24
- Installing the SIM Card 25
- 1 - 6 MC55 User Guide 26
- Installing the Battery 27
- Charging the Battery 27
- 1 - 8 MC55 User Guide 28
- Replacing the Battery 29
- Removing the microSD Card 30
- Battery Management 31
- Turning Off the Radios 32
- Handstrap Replacement 33
- Getting Started 1 - 15 35
- 1 - 16 MC55 User Guide 36
- Chapter 2 Using the MC55 37
- Status Icons 38
- Using the MC55 2 - 3 39
- Programs 40
- Using the MC55 2 - 5 41
- 2 - 6 MC55 User Guide 42
- Settings 43
- 2 - 8 MC55 User Guide 44
- Using the MC55 2 - 9 45
- Adjusting Volume 46
- Battery Status Indications 46
- Battery Reserve Options 47
- 2 - 12 MC55 User Guide 48
- LED Indicators 49
- Resetting the MC55 50
- Waking the MC55 51
- Password Locking 52
- Using the MC55 2 - 17 53
- Numeric Keypad Configuration 54
- Using the MC55 2 - 19 55
- 2 - 20 MC55 User Guide 56
- Using the MC55 2 - 21 57
- 2 - 22 MC55 User Guide 58
- Using the MC55 2 - 23 59
- 2 - 24 MC55 User Guide 60
- Using the MC55 2 - 25 61
- 2 - 26 MC55 User Guide 62
- Using the MC55 2 - 27 63
- 2 - 28 MC55 User Guide 64
- Using the MC55 2 - 29 65
- PIM Keypad Configuration 66
- Using the MC55 2 - 31 67
- 2 - 32 MC55 User Guide 68
- Function Buttons 69
- Entering Data 70
- Data Capture 71
- Digital Camera 72
- Scanning Considerations 72
- Linear Scanning 72
- Imager Scanning 73
- 2 - 38 MC55 User Guide 74
- Digital Camera Scanning 75
- Using Voice-Over-IP 76
- Taking Photos 76
- Recording Video 77
- Viewing Photos and Videos 77
- 2 - 42 MC55 User Guide 78
- Software Installation 79
- MC55 GPS Setup 79
- Using GPS Navigation 3 - 3 81
- 3 - 4 MC55 User Guide 82
- Chapter 4 Using the Phone 83
- Turning the Phone On and Off 84
- Making a Call 86
- Using Contacts 87
- 4 - 6 MC55 User Guide 88
- Using Call History 89
- Making an Emergency Call 90
- Answering a Call 90
- Smart Dialing 91
- Muting a Call 92
- Taking Notes 93
- Using Speed Dial 94
- Using the Phone 4 - 13 95
- Editing a Speed Dial Entry 96
- Deleting a Speed Dial Entry 97
- Using the Phone 4 - 17 99
- 4 - 18 MC55 User Guide 100
- Using the Phone 4 - 19 101
- Swapping Calls 102
- Conference Calling 103
- Text Messaging 104
- Using the Phone 4 - 23 105
- Sending a Text Message 106
- Using the Phone 4 - 25 107
- 4 - 26 MC55 User Guide 108
- Ending a Data Connection 109
- 4 - 28 MC55 User Guide 110
- Chapter 5 Using Bluetooth 111
- Security 112
- Bluetooth Configuration 113
- Bluetooth Power States 114
- Using Bluetooth 5 - 5 115
- 5 - 6 MC55 User Guide 116
- Using Bluetooth 5 - 7 117
- 5 - 8 MC55 User Guide 118
- Available Services 119
- 5 - 10 MC55 User Guide 120
- Using Bluetooth 5 - 11 121
- 5 - 12 MC55 User Guide 122
- Using Bluetooth 5 - 13 123
- 5 - 14 MC55 User Guide 124
- Using Bluetooth 5 - 15 125
- 5 - 16 MC55 User Guide 126
- Using Bluetooth 5 - 17 127
- 5 - 18 MC55 User Guide 128
- Using Bluetooth 5 - 19 129
- 5 - 20 MC55 User Guide 130
- Using Bluetooth 5 - 21 131
- 5 - 22 MC55 User Guide 132
- Using Bluetooth 5 - 23 133
- Bluetooth Settings 134
- Using Bluetooth 5 - 25 135
- 5 - 26 MC55 User Guide 136
- Using Bluetooth 5 - 27 137
- 5 - 28 MC55 User Guide 138
- Using Bluetooth 5 - 29 139
- 5 - 30 MC55 User Guide 140
- Using Bluetooth 5 - 31 141
- 5 - 32 MC55 User Guide 142
- Using Bluetooth 5 - 33 143
- 5 - 34 MC55 User Guide 144
- Using Bluetooth 5 - 35 145
- 5 - 36 MC55 User Guide 146
- Using Bluetooth 5 - 37 147
- 5 - 38 MC55 User Guide 148
- Using Bluetooth 5 - 39 149
- Using Bluetooth 5 - 41 151
- 5 - 42 MC55 User Guide 152
- Using Bluetooth 5 - 43 153
- 5 - 44 MC55 User Guide 154
- Using Bluetooth 5 - 45 155
- 5 - 46 MC55 User Guide 156
- Chapter 6 Accessories 157
- Single Slot USB Cradle 158
- Charging the Spare Battery 159
- Battery Charging Indicators 159
- Country Settings 160
- Modem USB Ethernet 161
- Operation 162
- Four Slot Charge Only Cradle 163
- Four Slot Ethernet Cradle 164
- VCD5000 Vehicle Cradle 165
- Four Slot Battery Charger 167
- 6 - 12 MC55 User Guide 168
- LED Charge Indications 169
- Vehicle Holder 170
- Installation 171
- 6 - 16 MC55 User Guide 172
- Accessories 6 - 17 173
- 6 - 18 MC55 User Guide 174
- Introduction 175
- Maintaining the MC55 175
- Removing the Screen Protector 176
- Battery Safety Guidelines 176
- Cleaning 177
- Harmful Ingredients 178
- Cleaning Instructions 178
- Special Cleaning Notes 178
- Materials Required 178
- Cleaning the MC55 178
- Cleaning Cradle Connectors 179
- Cleaning Frequency 179
- Troubleshooting 180
- Table 7-1 181
- Bluetooth Connection 182
- Vehicle Cradle 185
- Magnetic Stripe Reader 187
- 7 - 14 MC55 User Guide 188
- MC55 Technical Specifications 189
- A - 2 MC55 User Guide 190
- Table A-1 191
- A - 4 MC55 User Guide 192
- A - 6 MC55 User Guide 194
- Table A-2 195
- MC55 Accessory Specifications 196
- Magstripe Reader 199
- A - 12 MC55 User Guide 200
- Table A-13 201
- Table A-12 201
- A - 14 MC55 User Guide 202
- Features 203
- Enabling VQM 203
- Audio Modes 204
- Voice Packet Prioritization 205
- Disabling VQM 206
- Finger Scrolling 207
- Home Screen 208
- Windows Mobile 6.5 C - 3 209
- Classic Today Screen 210
- Status Bar 211
- C - 6 MC55 User Guide 212
- Windows Mobile 6.5 C - 7 213
- Tile Bar 214
- Start Screen 214
- Windows Mobile 6.5 C - 9 215
- C - 10 MC55 User Guide 216
- Windows Mobile 6.5 C - 11 217
- C - 12 MC55 User Guide 218
- Windows Mobile 6.5 C - 13 219
- Speaker Icon 220
- Battery Icons 220
- Connectivity Icon 220
- Locking the MC55 221
- Locking with Simple PIN 222
- Locking with Strong Password 222
- Password Locking Setup 223
- Assisted GPS 224
- Windows Mobile 6.5 C - 19 225
- UI Settings 226
- Windows Mobile 6.5 C - 21 227
- C - 22 MC55 User Guide 228
- Glossary 229
- Glossary - 2 MC55 User Guide 230
- Glossary - 3 231
- Glossary - 4 MC55 User Guide 232
- Glossary - 5 233
- Glossary - 6 MC55 User Guide 234
- Glossary - 7 235
- Glossary - 8 MC55 User Guide 236
- Numerics 237
- Index - 2 MC55 User Guide 238
- Index - 3 239
- Index - 4 MC55 User Guide 240
- Index - 5 241
- Index - 6 MC55 User Guide 242
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