DiffServ introduces the concept of the
DiffServ Code Point (DSCP) that uses the first 6 bits of the TOS field thereby giving 2
6 =
64 different values.
RFC 2474 describes the Differentiated Services (DS) field and the DiffServ Code Point (DSCP).
Default values Gigaset DECT IP devices (N720 / N510 / N300 / C610 IP) :
SIP : 136 decimal (8bit - TOS) --> 34 decimal (6bit - DSCP) --> AF41 (DSCP)
RTP: 184 decimal (8bit - TOS) --> 46 decimal (6bit - DSCP) --> EF (DSCP)
Default values Gigaset T300 / 500:
/etc/asterisk/sip.config
[....
tos_sip:cs3
tos_audio: ef
tos_video: af 41
....]
The following table illustrates the DSCP values:
The values in decimal are given in the following table: