MicroNet Technology SP5001A/S - Manual (Page 81)

6.17. [tos]
IP Packet ToS (Type of Service)/ Differentiated Service configuration.
usr/config$ tos
IP Packet ToS(type of Service)/Differentiated Service configuration
Usage:
tos [-rtptype dscp]
tos [-sigtype dscp]
tos -print
[-rtpreliab mode]
tos -print
Example:
tos -rtptype 7 -sigtype 0
-rtptype
the packages of voice (0~63)
-sigtype
the package of call signal (0~63)
IPv4 Head Format
In RFC 791, the following 8 bits were allocated to a Type of Service (ToS) field - now
DiffServ and ECN. For instance, one host could set its IPv4 datagrams' ToS field value
to prefer low delay, while another might prefer high reliability. In practice, the ToS field
has not been widely implemented. However, a great deal of experimental, research
and deployment work has focused on how to make use of these eight bits. These bits
have been redefined and most recently through DiffServ working group in the IETF
and the Explicit Congestion Notification codepoints
Note:
The value of rtptype and sigtype is from 0 to 63. ToS only works if it has related
network devices supported.
80