Electronic and Postal Communications (Quality of Service)
G.N. No. 416 (contd)
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FOURTH SCHEDULE
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(Made under Regulation 11)
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QUALITY OF SERVICE PARAMETERS FOR INTERNET SERVICES
S/NO
Definition
Measurement
Target Values
1
The ratio of successful log-ins to
access the Internet when both the
access network and the ISP network
are available in full working order
Successful log-in ratio
% Successful log-ins
(ETSI EG 202 057-4;
ETSI TS 102 250-2)
Dial-up users must be able to
connect at least 90% of the
time
Leased line users must be able
to connect at least 99% of the
time
2
Delay (one way transmission time)
The delay is half the time in
Half the time in
National network latency (twomilliseconds that is needed for an
milliseconds that is
way) ≤85ms
ICMP Echo Request/Reply (Ping) to
needed for an ICMP
a valid IP address
Echo Request/ Reply
International network latency
(Ping) to a valid IP
(two-way) ≤300 ms
address.
Measurement provided
as the mean value of the
delay (in ms)
(ETSI EG 202 057-4)
For international
network latency, the
measurement is carried
by sending a PING
packet from the test
point to the first
international point of
presence.
(ITU-T Rec. Y.1541).
Mean upper bound for
each class of service is
specified in, for
example the mean upper
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