MC55 AT Command Set
10.4 AT+CGAUTO s
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MC55_ATC_V01.05 Page 250 of 469 2/10/04
Confidential / Released
1 Enable automatic response for network requests for GPRS PDP context acti-
vation. GPRS requests are automatically accepted according to the descrip tion
below.
3(P) Modem compatibility mode. The automatic acceptance of both GPRS and
incoming CSD calls is controlled by the ATS0 command. Manual control uses
the ATA and ATH commands, respectively, to accept or reject GPRS network
requests or incoming CSD calls.
Notes
• It is allowed to have different AT+CGAUTO settings on different interfaces.
• When the AT+CGAUTO=0 command is received, the MT will not perform a GPRS detach if it is attached. Sub-
sequently, when the MT announces a network request for PDP context activation by issuing the URC RING
or CRING, the TE may manually accept or reject the request by issuing the AT+CGANS command or may sim-
ply ignore the network request.
• When the AT+CGAUTO=1 command is received, the MT will attempt to perform a GPRS attach if it is not yet
attached. Failure will result in ERROR or, if enabled +CME ERROR being returned to the TE. Subsequently,
the MT announces a network request for PDP context activation by issuing the URC RING to th e TE, followed
by the intermediate result code CONNECT. The MT then enters V.25ter online data state and follows the
same procedure as it would after having received a +CGANS=1 with no <L2P> or <cid> values specified.
• If a GPRS attach will be initiated by this command and the MT is not able to attach for more than 385 seconds
(timer T3310 expired), command returns with "ERROR" or "+CME ERROR: unknown", but MT is still trying
to attach and the requested automatic mode <n> is in use.
• If a network request for PDP context activation is answered automatically and if another AT command is
issued at the same time on the same interface, then this AT command is not executed. An y response belongs
to the automatic context activation procedure. If the AT command which caused the collision was a circuit
switched data call, the CONNECT response does not belong to this data call but to the GPRS. This can be
detected if ATX is not set to 0. CS data call will issue CONNECT <text>, GPRS will issue CONNEC T only.