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Cinterion
®
EHS6 AT Command Set
11.5 AT+CGDATA
EHS6_ATC_V03.001
15/12/3
Confidential / Released
Page 291 of 513
11.5.1
Automatic deactivation of PDP context during dial-up PPP
write command or
the MT issues the intermediate result code CONNECT
and enters V.250ter online data state. In V.250 online data state, first some LCP protocol exchange between MT
and TE is performed to set up the PPP link. After successfully establishing the PPP link, the MT performs the
PDP context activation procedure if the context is not already activated. As a result, the MT is in a "PDP context
activated" state within the PLMN, the PPP link is established on the mobile side and the mobile is ready for IP
data transfer.
If the TE wants to close the LCP link the MT may perform an LCP termination request procedure on PPP level.
After this LCP termination procedure the MT deactivates the PDP context automatically and the MT returns to
V.250 command mode and issues the final result code NO CARRIER.
During the implicit PDP context deactivation procedure after LCP termination the TE may change into V.250
command state (e.g. by using
or by toggling DTR if
is set to 1) before the result NO CARRIER occurs.
In this case the application should not try to deactivate the PDP context by using the commands
. If DTR is configured to disconnect data connections (
2), then the application should not toggle DTR
during the implicit PDP context deactivation and before "NO CARRIER" is received.