Chapter 23 Voice
VMG5313-B10A/-B30A Series User’s Guide
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desired. This allows the intermediary DiffServ-compliant network devices to handle the packets
differently depending on the code points without the need to negotiate paths or remember state
information for every flow. In addition, applications do not have to request a particular service or
give advanced notice of where the traffic is going.
3
DSCP and Per-Hop Behavior
DiffServ defines a new DS (Differentiated Services) field to replace the Type of Service (TOS) field
in the IP header. The DS field contains a 2-bit unused field and a 6-bit DSCP field which can define
up to 64 service levels. The following figure illustrates the DS field.
DSCP is backward compatible with the three precedence bits in the ToS octet so that non-DiffServ
compliant, ToS-enabled network device will not conflict with the DSCP mapping.
Figure 150
DiffServ: Differentiated Service Field
The DSCP value determines the forwarding behavior, the PHB (Per-Hop Behavior), that each packet
gets across the DiffServ network. Based on the marking rule, different kinds of traffic can be
marked for different priorities of forwarding. Resources can then be allocated according to the DSCP
values and the configured policies.
23.10.2 Phone Services Overview
Supplementary services such as call hold, call waiting, and call transfer. are generally available from
your VoIP service provider. The VMG supports the following services:
• Call Return
• Call Hold
• Call Waiting
• Making a Second Call
• Call Transfer
• Call Forwarding
• Three-Way Conference
• Internal Calls
• Call Park and Pickup
• Do not Disturb
• IVR
• Call Completion
• CCBS
• Outgoing SIP
3.
The VMG does not support DiffServ at the time of writing.
DSCP
(6-bit)
Unused
(2-bit)
Summary of Contents for VMG5313-B10A
Page 15: ...15 PART I User s Guide ...
Page 16: ...16 ...
Page 32: ...Chapter 2 The Web Configurator VMG5313 B10A B30A Series User s Guide 32 ...
Page 40: ...Chapter 4 Tutorials VMG5313 B10A B30A Series User s Guide 40 ...
Page 71: ...71 PART II Technical Reference ...
Page 72: ...72 ...
Page 78: ...Chapter 5 Network Map and Status Screens VMG5313 B10A B30A Series User s Guide 78 ...
Page 106: ...Chapter 6 Broadband VMG5313 B10A B30A Series User s Guide 106 ...
Page 162: ...Chapter 9 Routing VMG5313 B10A B30A Series User s Guide 162 ...
Page 180: ...Chapter 10 Quality of Service QoS VMG5313 B10A B30A Series User s Guide 180 ...
Page 198: ...Chapter 11 Network Address Translation NAT VMG5313 B10A B30A Series User s Guide 198 ...
Page 210: ...Chapter 14 Interface Group VMG5313 B10A B30A Series User s Guide 210 ...
Page 218: ...Chapter 15 USB Service VMG5313 B10A B30A Series User s Guide 218 ...
Page 232: ...Chapter 17 Firewall VMG5313 B10A B30A Series User s Guide 232 ...
Page 240: ...Chapter 19 Parental Control VMG5313 B10A B30A Series User s Guide 240 ...
Page 250: ...Chapter 21 Certificates VMG5313 B10A B30A Series User s Guide 250 ...
Page 296: ...Chapter 23 Voice VMG5313 B10A B30A Series User s Guide 296 ...
Page 300: ...Chapter 24 Log VMG5313 B10A B30A Series User s Guide 300 ...
Page 308: ...Chapter 27 xDSL Statistics VMG5313 B10A B30A Series User s Guide 308 ...
Page 318: ...Chapter 30 Remote Management VMG5313 B10A B30A Series User s Guide 318 ...
Page 322: ...Chapter 32 TR 064 VMG5313 B10A B30A Series User s Guide 322 ...
Page 332: ...Chapter 36 Log Setting VMG5313 B10A B30A Series User s Guide 332 ...
Page 336: ...Chapter 37 Firmware Upgrade VMG5313 B10A B30A Series User s Guide 336 ...
Page 352: ...Chapter 40 Troubleshooting VMG5313 B10A B30A Series User s Guide 352 ...
Page 354: ...354 ...
Page 374: ...Appendix B Wireless LANs VMG5313 B10A B30A Series User s Guide 374 ...
Page 390: ...Appendix E Legal Information VMG5313 B10A B30A Series User s Guide 390 ...