Panasonic KX-TGP500 - Page 188

Description Specifies the value to be stored in the ToS (Type of Service) field in the
IP header of RTP packets as a DSCP for DiffServ.
Note
• The structures of the ToS/DS field in an IP header are shown
below.
ToS field
Precedence
3 bits
Type of Service
4 bits
Currently
unused
1 bit
76543210
DS field
DSCP
6 bits
Currently
unused
2 bits
76543210
The ToS field consists of a 3-bit precedence, a 4-bit type of
service, and a 1-bit unused field.
The
DS filed consists of a 6-bit DSCP and a 2-bit unused field.
Value Range 0–255
Note
• Because the 6-bit DSCP values (i.e., "xxx 000" where "x"="0"
or "1") in the DS field are converted to the 8-bit DSCP values
(i.e., "xxx 000 00"), you must specify here the fourfold decimal
value for 2 bits shifted left. The following listing shows the DSCP
level of DiffServ and the corresponding decimal value to be
specified in this parameter.
– Best Effort (default) (000 000 00): 0
– AF11 (DSCP 10) (001 010 00): 40
– AF12 (DSCP 12) (001 100 00): 48
– AF13 (DSCP 14) (001 110 00): 56
– AF21 (DSCP 18) (010 010 00): 72
– AF22 (DSCP 20) (010 100 00): 80
– AF23 (DSCP 22) (010 110 00): 88
– AF31 (DSCP 26) (011 010 00): 104
– AF32 (DSCP 28) (011 100 00): 112
– AF33 (DSCP 30) (011 110 00): 120
– AF41 (DSCP 34) (100 010 00): 136
– AF42 (DSCP 36) (100 100 00): 144
– AF43 (DSCP 38) (100 110 00): 152
– CS1 (ToS 1) (001 000 00): 32
– CS2 (ToS 2) (010 000 00): 64
– CS3 (ToS 3) (011 000 00): 96
– CS4 (ToS 4) (100 000 00): 128
– CS5 (ToS 5) (101 000 00): 160
– CS6 (ToS 6) (110 000 00): 192
– CS7 (ToS 7) (111 000 00): 224
– EF (Expedited Forwarding) (DSCP 46) (101 110 00): 184
188 Administrator Guide Document Version 2013-02
4.6.2 RTP Settings