C55/C55i AT COMMAND SET Description Preliminary - Falcom

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C55/C55I AT COMMAND SET VERSION 1.00 When the layer 2 protocol has terminated, either as a result of an orderly shutdown of the PDP or an error, the MT enters V.25ter command state and returns NO CARRIER. Parameter Description (num) Parameter specifies a particular PDP context definition (see AT+CGDCONT command). If no context is specified, an internal context 0 with default properties is used (see AT+CGDCONT, AT+CGQREQ and AT+CGQMIN). 1...2 Notes • If C55 is in dedicated mode, command returns with "+CME ERROR: phone busy". • ATD is used as a standard V.25ter AT command, too. 9.17 ATH Manual rejection of a network request for PDP context activation Syntax Exec Command ATH Response(s) OK Reference(s) PIN ASC0 GSM 07.07 ● ● Command Description The V.25ter ATH command may be used to deactivate all PDP contexts which are active or online on the same interface. The ATH command may also be used to reject a network request for PDP context activation announced by the unsolicited result codes "RING" or "+CRING:GPRS". Notes • In contrast to GSM 07.07 it is possible to cancel a connection with ATH after a break. This is done for compatibility reasons due to the "dial-up network" drivers of Microsoft Windows. • ATH is used as a standard V.25ter AT command, too. • If ATH is used to reject a network request for PDP context activation, then other PDP contexts on the same interface which are active or online will not be deactivated. This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 190
C55/C55I AT COMMAND SET VERSION 1.00 9.18 ATS0 Automatic response to a network request for PDP context activation Syntax Read Command Response(s) ATS0? Write Command ATS0= OK Response(s) OK Reference(s) PIN ASC0 GSM 07.07 ◑ ● Command Description The V.25ter ATS0= (Automatic answer) command may be used to turn off (n=0) and on (n>0) the automatic response to a network request for a PDP context activation. When the ATS0= ( > 0) command is received, the MT will attempt to perform a GPRS attach if it is not yet attached and if ME is configured to do this (see AT^SCFG, parameter ). Failure will result in ERROR being returned to the TE. Subsequently, the MT will announce a network request for PDP context activation by issuing the URC RING or CRING to the 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 AT+CGANS=1 command with no or values specified. ATSO=O does not perform an automatic GPRS detach. Parameter Description (num)(&W)(&V) (&F) 000 automatic answering is disabled 001-255 enable automatic answering on the specified ring number Notes • If different settings are used on each interface, and a request for PDP context activation is received, the interface 'wins' which is idle and uses the smallest ATS0 value. • If a network request for PDP context activation is answered automatically and another AT command is issued at the same time on the same interface then this AT command will not be executed. Any response belongs to the automatic context activation procedure. If the AT command which caused the collision was a CS 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 , GPRS will issue CONNECT only. • A network request for PDP context activation has a maximum duration of approximately 40 seconds (for details see GSM 04.08). A RING/CRING URC is issued every 5 seconds, so setting This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 191
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C55/C55i AT COMMAND SET Description Preliminary - Falcom

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