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Configuration: Basic 
Advanced
 TCP/IP
IP QoS Traffic Rule fields (continued)
Field | Description | |
Normal Service | Packets matching the rule are treated as normal packets requiring no special treatment along  | |
  | the path. Normal packets have TOS byte 0 in the IP Header.  | |
TOS Marking | Enables you to assign a TOS value to this traffic — No Change, Normal Service, Minimize  | |
  | monetary cost, Maximize reliability, Maximize throughput, or Minimize delay. The priority bits  | |
  | in the TOS byte are set to zero upon marking and derived based on priority queues. The  | |
  | priority bit value for each priority queue is:  | |
  | •  | Voice (EF1): 5  | 
  | •  | High (EF2): 4  | 
  | •  | Medium: 3  | 
  | •  | Low: 1  | 
VT2142 Voice Gateway User Guide | 26  |