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Appendix
Shutting down the connection
The GPRS data connection can be shut down in the Dial-Up Network by selecting the
hang up button. However the PDP context is still alive. It can be stopped with the AT
command AT+CGACT.
Example: AT+CGACT=0,<cid>
OK
When detaching with the AT+CGATT command, no GPRS data connection is possible
before reattaching.
Example: AT+CGATT=0,<cid>
OK
NOTE
The CGATT command also performs a PDP context deactivation, if the context had
not been deactivated before.
Another alternative is the ATH command, which closes a data connection, deactivates the
PDP context and detaches the modem.
Example: ATH
NOTE
ATH closes all ongoing voice and data connections.
Abbreviations
APN
Access Point Name
CID
Context Identity
GPRS
General Packet Radio Service
GSM
Global System of Mobile Communication
IP
Internet Protocol
PDP
Packet Data Protocol
PIN
Personal Identification Number
PLMN
Public Land Mobile Network
PPP
Point to Point Protocol
QoS
Quality of Service
SIM
Subscriber Identity Module
TCP
Traffic Control Protocol
Printed in U.K.
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