Sony Ericsson t226 t226 t226 Benutzerhandbuch

53

Support of power control 
Uplink and Downlink

Uplink = yes, Downlink is a network feature

Support of ciphering 
algorithms

GEA1

Support of compression 
algorithms

No

Support of the QoS 
modification procedure

Yes, when initiated by the network (not 
by the handset)

Downlink data rate

Up to 64,200 bps for packet data communication, using 3 time slots in coding 
scheme CS-4

Uplink data rate

Up to 21,400 bps for packet data communication, using 1 time slot in coding 
scheme CS-4

Mode of operation

Class B and Class C modes of operation supported. It is possible for the user to 
choose if the Circuit Switched services should be favored.

R Reference point

Physical layer: PPP is supported as L2 layer in the R reference point
Authentication algorithms PAP, CHAP supported

IP connectivity

PDP type IP is supported
IP termination in mobile or TE (laptop, PDA) supported

Application

WAP over GPRS supported (UDP/IP and GPRS-SMS)
SMS over GPRS (SMS-MT, SMS-MO) supported

QoS

QoS negotiation supported. Default requested QoS sent by the handset at PDP 
context activation is reliability Class 3. Peak/Mean/Delay/Precedence Class: 
subscribed (1,2,3).

•

Precedence class supported (1,2,3)

•

Reliability class 1-5 supported

•

Delay classes supported (1,2,3,4)

•

Mean and peak throughput rate limited by multislot class 4 and CS-4

PDP context

10 PDP context descriptions stored in mobile
PDP context description is edited via application in mobile or via OTA
Simultaneous PDP contexts not supported
Network requested PDP context not supported

SIM

GPRS aware, as well as non GPRS aware SIMs are supported

Attachment

Yes (outgoing, images 
only)

Bearer type GPRS (IP)

Yes

Bearer type GSM Data (IP)

Yes, HSCSD, ISDN and analog