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Départ. Technical support- CM640
PHILIPS Consumer
Communications
Centre du Mans
Four different channel-coding schemes have been defined for GPRS to make optimum use of varying radio
conditions. Usage of higher coding schemes allows to send more data in the same number of time slots.
Philips Fisio820 features GPRS Class B. With GPRS Class B, if you receive incoming calls while in the middle of a
data session, you receive a notification; and vice versa.
Philips Fisio820 is enabled to support GPRS up to Class10 (4Rx, 2Tx) [depending on networks developments].
GPRS Class10 enables to receive information at least 4 times faster than a standard GSM connection and to send
them 2 times faster. That is why GPRS Class 10 is particularly suitable for surfing on the WAP pages, exchanging
emails or using your phone as a modem for Internet surfing, Intranet browsing or file transfer.
Philips Fisio820 is SMG31bis - Coding schemes 1, 2, 3 et 4.
PHILIPS ELECTRONICS N.V. 1999
All rights reserved. Reproduction in whole
or in part is prohibited without the written
consent of the copyright owner.
PROCEDURE
Service Repair Support
Max Number of Slots
Servic
Max
Max
e Class
Rx
Tx
1
1
1
2
2
1
3
2
2
4
3
1
5
2
2
6
3
2
7
3
3
8
4
1
9
3
2
10
4
2
11
4
3
12
4
4
13
3
3
14
4
4
15
5
5
16
6
6
17
7
7
18
8
8
Fig. 1 Service Classes - Multislot operations
Channel Coding
CS-1 CS-2
Scheme
Data rate per
9.05
timeslot (kbps)
Fig. 2 GPRS Coding Schemes
COMPANY RESTRICTED
Multislot
Total
type
available
2
1
3
1
3
1
4
1
4
1
4
1
4
1
5
1
5
1
5
1
5
1
5
1
6
2
8
2
10
2
12
2
14
2
16
2
CS-3
CS-4
13.4
15.6
21.4
VY-V-640-82x
Page : 17 of 71
Langue : EN
Date : 25/02/03
VY-V-640-82x
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