10.12.2012 Views

GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Page 456<br />

<strong>GSM</strong> <strong>09.02</strong> <strong>Version</strong> <strong>5.3.0</strong>: August 1996<br />

18.4 MS originated calls<br />

18.4.1 General<br />

The call can be established in two ways in the <strong>GSM</strong>. Either with the early assignment or with the off air call<br />

set up (OACSU). The difference between these is that in the latter case the radio channel is reserved at<br />

the last possible moment, i.e. when the called subscriber answers. In this subclause only the procedure<br />

with the early assignment is shown. The procedure is shown in figure 18.4/1, this is an example sequence<br />

which assumes successful operation.<br />

*DWHZD\<br />

¸¹ QRWH ¸¹ QRWH ¸¹ ¸¹ ¸¹<br />

·06 ¼½%66¼½06&¼½9/5¼½06&·<br />

º¾» º¾» º¾» º¾» º¾»<br />

· · · · ·<br />

· $B&0B6(5B5(4 · · ·<br />

¼À!½0$3B352&(66B$&&(66· ·<br />

· · · B5(48(67 · ·<br />

· · ¼!· ·<br />

· · · 0$3B3529,'(B,06, · ·<br />

· · · 0$3B$87+(17,&$7( · ·<br />

· · · 0$3B6(7B · ·<br />

· · · &,3+(5,1*B02'( · ·<br />

· · · 0$3B&+(&.B,0(, · ·<br />

· · · 0$3B2%7$,1B,0(, · ·<br />

· · ·0$3B352&(66B$&&(66· ·<br />

· · · B5(48(67 DFN · ·<br />

· · ¼ ½ ·<br />

· · · 0$3B)25:$5'B1(:B · ·<br />

· · · 706, · ·<br />

· $B&0B6(5B$&& QRWH · · ·<br />

¼ À½ · ·<br />

· · · · ·<br />

· $B6(783 ·0$3B6(1'B,1)2B)25B· ·<br />

¼À!½287*2,1*B&$// · ·<br />

· · ¼!· ·<br />

· · · · ·<br />

· · · 0$3B&203/(7(B · ·<br />

· · · &$// · ·<br />

· $B&$//B352& ¼ ½ ·<br />

¼ À½ · ·<br />

· · · · ·<br />

· · $B$66B5(4 · · ·<br />

· ¼ ½ · ·<br />

· · · · ·<br />

· · $B$66B&203 · · ·<br />

· ¼!½ · ·<br />

· · · ,B,$0 QRWH ·<br />

· · ¼ !·<br />

· · · · ·<br />

· · ·0$3B6(1'B,1)2B)25B· ·<br />

· · ·287*2,1*B&$// DFN · ·<br />

· · ¼ ½ ·<br />

· · · QRWH · ·<br />

· · · · ·<br />

xxx = Optional Procedure<br />

Figure 18.4/1: Procedure for MS originating call set-up

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!