RAD Data comm Vmux-210 Specifications Page 28
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Chapter 1 Introduction Installation and Operation Manual
1-10 Functional Description Vmux-210 Ver. 1.1
Voice Activity Detection
Voice Activity Detection (VAD) uses digital signal processing techniques to
distinguish between silence and speech on a voice connection. VAD reduces the
bandwidth requirements of a voice connection by generating traffic only during
periods of active voice conversation. With Comfort Noise Generation (CNG)
supported at the remote site, VAD significantly reduces bandwidth consumption
without degrading voice quality. VAD achieves additional bandwidth savings when
combined with voice compression techniques.
TDMoIP Multiplexing
Compressed voice payload is multiplexed by using the TDMoIP technique. The
multiplexing is performed by the Vmux-210 software. The DSPs send a continuous
stream of voice packets; which are multiplexed into a TDMoIP frame by adding
AAL2 headers and a TDMoIP header.
Figure 1-10
illustrates the TDMoIP frame
structure.
AAL2
Header
AAL2
Header
Voice
Packet
Voice
Packet
TDMoIP
Header
Figure 1-10. TDMoIP Frame Structure
The size of the TDMoIP frame is determined by the following parameters:
• Packetizing interval – The maximum time interval allocated for the TDMoIP
frame aggregation (10 to 90 m
Sec).
• Maximum bytes per multiplexed frame – The maximum size of each frame
(100 to 1461 bytes).
The Vmux-210 continues filling the TDMoIP frame until one of the conditions
defined by the above parameters is met.
Ethernet Frame
At a later stage, the TDMoIP frame becomes a part of the standard Ethernet
frame, which also includes a UDP header, IP header and MAC. The Ethernet
frames are forwarded to the CPU, which sends them to the Ethernet or
E1/T1/Serial main links.
Figure 1-11
illustrates the structure of the Vmux-210 Ethernet frame.
Table 1-1
describes the fields of the Vmux-210 Ethernet frame.
Voice Voice VoiceEthernet Ethernet
I
P
UDP TDMoI
P
AAL2 AAL2 AAL2
Figure 1-11. Ethernet Frame Structure
When AAL2oMPLS multiplexing is used, the IP and UDP headers are not included
in the Ethernet frame.
- Vmux-210 1
- Limited Warranty 4
- Product Disposal 4
- General Safety Instructions 5
- Safety Symbols 5
- Handling Energized Products 6
- Attention 8
- FCC-15 User Information 9
- Declaration of Conformity 10
- Quick Start Guide 11
- 2. Configuring Vmux-210 12
- Figure 1. Quick Setup Menu 13
- Contents 15
- Chapter 1 19
- Introduction 19
- Applications 20
- Ethernet Links 21
- Serial Main Link 21
- Voice Interfaces 21
- TDMoIP Multiplexing 21
- AAL2oMPLS Multiplexing 21
- Bundling 22
- VLAN Table 22
- Internal Router 22
- Statistics Collection 23
- Management 23
- 1.2 Physical Description 24
- 1.3 Functional Description 25
- Signaling 27
- Compression 27
- Voice Activity Detection 28
- Ethernet Frame 28
- VLAN Support (per bundle) 30
- UDP Support 30
- E1/T1/Serial Main Link 31
- Integral Ethernet Switch 31
- DHCP Client Support 32
- Sec in this example) 33
- Chapter 2 41
- Installation and Setup 41
- 2.3 Package Contents 42
- 2.4 Equipment Needed 42
- Figure 2-1. FXS Connector 43
- Connecting to the E1 Link 44
- Connecting to the T1 Link 45
- Connecting to AC Power 46
- Connecting to DC Power 47
- Chapter 3 49
- Operation 49
- 3.2 Indicators 50
- PWR TST ALM 50
- 3.3 Default Settings 50
- Sec) 400 53
- Initiating a Control Session 56
- Logging In 57
- Selecting Parameters 58
- Using Terminal Hot Keys 59
- Sample Help Screen 59
- Security Levels 59
- Working with Telnet 60
- Working with ConfiguRAD 60
- Web Browser Requirements 61
- Logging in via a Web Browser 61
- Choosing Parameters 62
- Menu Map 63
- Change User 64
- Password 64
- 3.5 Turning Off the Unit 67
- Chapter 4 69
- Configuration 69
- Figure 4-2. Management Menu 71
- Setting Host IP Parameters 72
- Configuring the Manager List 72
- Managing Users 73
- Configuring Physical Ports 74
- Figure 4-7. Ethernet Menu 75
- Configuring the E1/T1 Uplink 78
- Table 4-11. T1 Parameters 79
- Configuring E1 Parameters 81
- Time Slot Table 82
- Configuring Analog Ports 83
- Configuring Ring Timeouts 84
- Configuring Ringer Profiles 84
- Configuring Gains 85
- Configuring Bundles 86
- Displaying all Bundles 87
- Adding a Bundle 88
- Editing a Bundle 89
- Figure 4-25 90
- Figure 4-26 90
- Figure 4-30 90
- Figure 4-23 90
- Figure 4-24 90
- Table 4-23. TOS Parameters 91
- VLAN Tagging is set to Yes 92
- Coder/Rate = G.729A/ 93
- Figure 4-27. Fax/Modem Menu 94
- Figure 4-28. VAD Menu 96
- Table 4-28. VAD Parameters 96
- Deleting a Bundle 99
- Configuring the Bridge 102
- Configuring VLAN 103
- Displaying the VLAN Table 104
- Adding and Editing a VLAN 104
- Deleting a VLAN 105
- Configuring the Router 106
- Routing 109
- Configuring RIP Parameters 110
- Figure 4-45. RIP Menu 111
- Table 4-43. RIP Parameters 111
- Figure 4-46. Firewall Menu 112
- Configuring Static Routing 113
- Displaying all Static Routes 114
- Adding a Static Route 114
- Editing a Static Route 115
- Deleting a Static Route 115
- Configuring DHCP Server 116
- Adding a DHCP Server Pool 117
- Editing a DHCP Server Pool 117
- Deleting a DHCP Server Pool 118
- Adding a NAT 119
- Editing a NAT 119
- Notes: 121
- Deleting a NAT 122
- Figure 4-61 123
- Displaying Existing Rules 125
- Adding Firewall Rules 125
- Editing Firewall Rules 125
- Deleting Firewall Rules 126
- 4.3 Additional Tasks 127
- Boot Sequence 128
- Accessing the File System 128
- Figure 4-65 130
- Figure 4-66 131
- Table 4-58 131
- Restoring Default Settings 132
- Setting the Date and Time 133
- Figure 4-70 134
- Resetting Vmux-210 135
- Chapter 5 137
- Configuring Vmux-210 for 137
- 5.2 Configuration Sequence 138
- 5.4 Configuring Vmux-210 140
- Appendix B 142
- Chapter 6 143
- Troubleshooting and 143
- Diagnostics 143
- Displaying Bundle Statistics 144
- Tracking Packets 146
- Figure 6-2 147
- Figure 6-4 147
- Table 6-2. Packets Tracking 147
- 6.2 Detecting Errors 154
- 6.3 Handling Alarms 156
- List of Vmux-210 Alarms 157
- 6.4 General Troubleshooting 158
- 6.5 Testing Vmux-210 159
- Loopback Tests 161
- Pinging Remote Devices 162
- Displaying the Active Tests 163
- 6.7 Technical Support 168
- Appendix A 169
- Connector Pinouts 169
- A.2 CONTROL Connector 170
- Table A-3 171
- Table A-4 171
- A.5 Serial Port 173
- Table A-7 174
- Table A-8 175
- Table A-9 176
- Table A-10 177
- Table A-11 178
- Table A-12 179
- Vmux-210 Ver. 1.1 182
- Vmux-210 Ver. 1.1 I-6 186
- Customer Response Form 187
- Error Report 189
- Innovative Access Solutions 192
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