Siemens MC55 AT manual Statenum, Cidnum

Parameter Description

<state>(num)

Indicates the state of PDP context activation.

0	deactivated
[1]	activated

<cid>(num)

PDP Context Identifier is a numeric parameter which specifies a particular PDP context definition. The param- eter is local to the TE-MT interface and is used in other PDP context related commands.

1...2

Notes

•ATH will deactivate any PDP context.

•If the MT is in dedicated mode, the write command returns "+CME ERROR: operation temporary not allowed".

•A maximum of 2 contexts can be activated at the same time, no matter on which interface. Trying to activate more than 2 contexts will cause "+CME ERROR: operation temporary not allowed". Note that, depending on the provider, the number of activated contexts may be further restricted. In such cases "+CME ERROR: unspecified GPRS error" will be returned and AT+CEER returns "+CEER: 50,26,0".

Remember that contexts may be activated implicitly by using the ATD*98# or ATD*99# GPRS compatibility commands without specifying a <cid>.

•If an activated context will be deactivated without using the command AT+CGACT, then the result code "NO CARRIER" will be issued to indicate the context deactivation. This happens for example if the context deac- tivation is forced by the network or if deactivation results from a network deregistration with AT+COPS=2.

MC55_ATC_V04.00	Page 267 of 475	3/17/06
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