GSM Originating Call Overview - EventHelix.com
GSM Originating Call Overview - EventHelix.com
GSM Originating Call Overview - EventHelix.com
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<strong>GSM</strong> <strong>Call</strong> Flow (<strong>GSM</strong> <strong>Originating</strong> <strong>Call</strong>)<br />
Cell Mobile Network Fixed Network<br />
Mobile Station Base Stations NSS PSTN<br />
User Mobile BSS MSC VLR PSTN<br />
Send Button<br />
Begin RR Connection Establishment<br />
RR CHANNEL REQUEST<br />
RR IMMEDIATE ASSIGNMENT<br />
RR SABM + MM CM SERVICE REQUEST<br />
RR UA<br />
SCCP CONNECTION REQUEST + MM CM SERVICE REQUEST<br />
Enable Ciphering<br />
BSSMAP CIPHER MODE COMMAND<br />
RR CIPHERING MODE COMMAND<br />
RR CIPHERING MODE COMPLETE<br />
BSSMAP CIPHER MODE COMPLETE<br />
RR Connection Establishment Completed<br />
<strong>Call</strong> Setup<br />
CC SETUP<br />
CC CALL PROCEEDING<br />
Connecting...<br />
Mode Modify<br />
BSSMAP ASSIGNMENT REQUEST<br />
RR CHANNEL MODE MODIFY<br />
RR CHANNEL MODE MODIFY ACKNOWLEDGE<br />
BSSMAP ASSIGNMENT COMPLETE<br />
ISUP INITIAL ADDRESS MESSAGE<br />
ISUP ADDRESS COMPLETE MESSAGE<br />
CC ALERTING<br />
Alerting Tone<br />
ISUP ANSWER<br />
CC CONNECT<br />
CC CONNECT ACKNOWLEDGE<br />
Connected<br />
Conversation<br />
Speech<br />
<strong>Call</strong> Release<br />
End Button
<strong>GSM</strong> <strong>Call</strong> Flow (<strong>GSM</strong> <strong>Originating</strong> <strong>Call</strong>)<br />
Cell Mobile Network Fixed Network<br />
Mobile Station Base Stations NSS PSTN<br />
User Mobile BSS MSC VLR PSTN<br />
CC DISCONNECT<br />
CC RELEASE<br />
CC RELEASE COMPLETE<br />
ISUP RELEASE<br />
ISUP RELEASED<br />
ISUP RELEASE COMPLETE<br />
RR Connection Release<br />
BSSMAP CLEAR COMMAND<br />
RR CHANNEL RELEASE<br />
BSSMAP CLEAR COMPLETE<br />
RR DISC<br />
RR UA<br />
<strong>Call</strong> Released Indication
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