Cep Terminals GSM/GPRS TERMINAL CT63 JAVA 6203 User Manual
Product codes
6203
Java User’s Guide
5.13 System Time
39
wm_java_usersguide_v19
Page 39 of 109
2012-01-27
Confidential / Released
5.13
System Time
When Java starts up, it initializes its time base from the system’s real time clock. If the RTC is
changed by AT command (AT+CCLK) later on, the Java time does not adjust. So, the time you
get with (AT+CCLK) and the time you get with System.currentTimeMilis() may not necessarily
be identical.
changed by AT command (AT+CCLK) later on, the Java time does not adjust. So, the time you
get with (AT+CCLK) and the time you get with System.currentTimeMilis() may not necessarily
be identical.
Table 6: GPRS Download data rate with different number of timeslots, CS4
Download data rate with x timeslots
Coding scheme 4
[kbit/s]
Coding scheme 4
[kbit/s]
1
time-
slot
time-
slot
theor.
Value
Value
1
1.
net transmission rates for LLC layer
%
from
theor.
Value
from
theor.
Value
2
time-
slots
time-
slots
theor.
Value
Value
%
from
theor.
value
from
theor.
value
3
time-
slots
time-
slots
theor.
Value
Value
%
from
theor.
value
from
theor.
value
4
time-
slots
time-
slots
theor.
Value
Value
%
from
theor.
value
from
theor.
value
17 20
85%
31 40
78%
35
60
58%
38 80
48%
Table 7: EDGE Download data rate with different number of timeslots, CS5
Download data rate with x timeslots
Coding scheme 5
[kbit/s]
Coding scheme 5
[kbit/s]
1
time-
slot
time-
slot
theor.
Value
Value
1
1.
net transmission rates for LLC layer
%
from
theor.
Value
from
theor.
Value
4
time-
slots
time-
slots
theor.
Value
Value
%
from
theor.
Value
from
theor.
Value
20 22 91%
78 89
87%
Table 8: EDGE Download data rate with different number of timeslots, CS9
Download data rate with x timeslots
Coding scheme 9
[kbit/s]
Coding scheme 9
[kbit/s]
1
time-
slot
time-
slot
theor.
Value
Value
1
1.
net transmission rates for LLC layer
%
from
theor.
Value
from
theor.
Value
4
time-
slots
time-
slots
theor.
Value
Value
%
from
theor.
value
from
theor.
value
50 59
85%
184
236
77%