Sony Ericsson T300 Sim, At+Cgdata Ent, Requested, AT+CGATT Packet Domain Service Attach Or Detach

T300/T302

White Paper, August 2002

Dimension	Support in the T300/T302
Interfaces to external	IrDA, AT commands. IrDA,
devices supported by the	Datarate=SIR & MIR RS232,
handset and available for	autobaud, max 460kbit/s
a GPRS link
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 favoured.
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, AT-command
	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
AT commands supported	•	AT+CGDCONT - DEFINE	•	AT+CGACT - PDP CONTEXT
		PDP CONTEXT		ACTIVATE OR DEACTIVATE
	•	AT+CGQREQ - Quality of	•	AT+CGDATA - ENT
		Service Profile
		(REQUESTED)
	•	AT+CGQMIN - Quality of
		Service Profile (Minimum
		Acceptable)
	•	AT+CGATT - PACKET
		DOMAIN SERVICE ATTACH
		OR DETACH

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