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3GPP TS 27.007 version 11.8.0 Release 11<br />

293<br />

ETSI TS 127 007 V11.8.0 (2013-10)<br />

Annex E (informative):<br />

Mobile originated alternating voice/data call example<br />

Figure E.1 illustrates the possible transitions in MO BS 61 call. Responses and result codes generated by TA are in bold<br />

face. In this example, data part of the call is asynchronous non-transparent 9600 bps service.<br />

OFF-LINE<br />

AT+CBST=7,0,1<br />

OK<br />

AT+COLP=1; +CR=1; +DR=1; +ILRR=1<br />

OK<br />

AT+CMOD=2; +FCLASS=0<br />

OK<br />

RLP negotiation failure<br />

+COLP: +35812345,145<br />

+CR: REL ASYNC<br />

NO CARRIER<br />

ATD12345;<br />

success<br />

+COLP: +35812345,145<br />

OK<br />

connection failure<br />

NO CARRIER<br />

AT+CEER<br />

+CEER: failure cause<br />

OK<br />

other possible failure codes<br />

BUSY/NO ANSWER/ERROR<br />

ATD12345<br />

success<br />

+COLP: +35812345,145<br />

+CR: REL ASYNC<br />

+DR: NONE<br />

+ILRR: 19200<br />

CONNECT 9600<br />

remote<br />

hangup<br />

VOICE<br />

ATD (or ATA)<br />

remote initiated<br />

in-call modification<br />

successful<br />

AT+CHUP<br />

(or ATH<br />

or drop DTR )<br />

NO CARRIER<br />

OK<br />

in-call modification success<br />

+CR: REL ASYNC<br />

+DR: NONE<br />

+ILRR: 19200<br />

CONNECT 9600<br />

in-call modification failure<br />

ERROR<br />

AT+CEER<br />

+CEER: failure cause<br />

OK<br />

+CR: REL ASYNC<br />

+DR: NONE<br />

+ILRR: 19200<br />

CONNECT 9600<br />

in-call modification success<br />

OK<br />

OK<br />

in-call modification failure<br />

ERROR<br />

AT+CEER<br />

+CEER: failure cause<br />

OK<br />

OFF-LINE<br />

TA se<strong>ts</strong> +CMOD=0<br />

OK<br />

ATH (or drop DTR)<br />

remote initiated<br />

in-call modification<br />

successful<br />

AT+CHUP<br />

DATA<br />

(V.24 circuit<br />

109 ON)<br />

NO CARRIER<br />

remote<br />

hangup<br />

Figure E.1: MO BS 61 call<br />

ETSI

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