Table 2.

DSCP Assignation for Internet traffic.

Service Group	Service Category	Major Service classes	Flow C/Cs	QoS Metrics					DSCP Value	Traffic class	Minor Service classes
				Timeliness			B.W	Reliability
				RT (sec)	Delay (ms)	Jitter (ms)
	Best Effort	Default	Unclassified	U	U	U	U	U	000000	CS0-Default	Everything else
User oriented	Data oriented	Low priority	Symmetric	1 sec	<200	N/A	Elastic	Zero Loss	001000	CS1	Internet Chat
		Interactive	(i) short lived  (ii) Low Latency  (iii) Asymmetric	2–5	250–400	N/A	Elastic	Zero Loss	010010  010100  010110	AF23  AF22  AF21	Telnet Web Browsing Enhanced Web
		Bulk Transfer	(i) long-lived  (ii) High Throughput  (iii) Asymmetric	2–5	Low-Medium	N/A	Elastic	Zero Loss	001010  001100  001110	AF11  AF12  AF13	E-Mail FTP Billing transfer
	Media oriented
	Tolerant  Real Time  Symmetric	Multimedia Conferencing	(i) interactive  (ii) group communication  (iii) Rate adaptive	Rate adaptive	<150	<400	8 kbps–1 Mbps	Very low loss	100110  100100  100010	AF43  AF42  AF41	Audio Audio graphics video
		Telephony Service	CBR, fixed small packets, Interactive and fast response	<150	<100	<400	8 kbps–1 Mbps	Very low loss	101110  101100	EF  EF	VOIP Videophony
	Intolerant  Real Time  Symmetric	Broadcasting	(i) Inelastic  (ii) CBR and VBR	2–5	<150	50–100	56 K–40 M	low loss	011010  011100	AF31  AF32	Broadcast Video Broadcast Audio
		Streaming	(i) Elastic  (ii) Variable packet size	2–5	<150	<100	64 k–60 M	low loss	011000	CS3	Streaming media
		Interactive	(i) Inelastic  (ii) VBR	2–5	<150	<100	64 k–60 M	low loss	100000	CS4	VoD
Network oriented	Network Control	Routing and control information	Inelastic-Short messages	N/A	1–10 s	N/A	Elastic	Zero Loss	110000	CS6	Routing information
	Operation and Management signaling	OAM	Inelastic-Short messages	N/A	50–100	N/A	Elastic	Zero Loss	010000	CS2	OAM
	Application Control	Signaling Service Class	Inelastic-Short messages	N/A	50–100	N/A	Elastic	Zero Loss	101000	CS5	VOIP Signaling