Contents - Epv-Verlag

epvverlag

Contents - Epv-Verlag

6.13 The message PAGING RESPONSE .....................................................................................................41

6.13.1 About the encryption of the Transport Channel ....................................................................................42

6.13.2 The Mobile Station Classmark ..............................................................................................................47

6.14 The message CLASSMARK CHANGE ...............................................................................................48

6.15 The message MEASUREMENT REPORT ...........................................................................................49

6.16 The message ASSIGNMENT COMMAND .........................................................................................50

6.17 Setting up the protected mode again and the message ASSIGNMENT COMPLETE .........................50

6.18 The message CHANNEL RELEASE ....................................................................................................51

6.19 The message CLASSMARK ENQUIRY ..............................................................................................51

7 The Handover Procedure .................................................................................................... 52

7.1 Determination of the strongest transmitter ............................................................................................52

7.2 The message HANDOVER COMMAND ............................................................................................53

7.3 The message HANDOVER COMPLETE .............................................................................................53

7.4 The message PHYSICAL INFORMATION .........................................................................................54

8 Mobility Management Messages ......................................................................................... 55

8.1 The message CM SERVICE REQUEST ...............................................................................................55

8.2 The MM messages during Location Update .........................................................................................57

8.2.1 The message MM LOCATION UPDATING REQUEST .....................................................................58

8.2.2 The message MM LOCATION UPDATING ACCEPT ........................................................................59

8.2.3 The message MM TMSI REALLOCATION COMPLETE ..................................................................60

9 Call Control Messages ......................................................................................................... 60

9.1 The message SETUP .............................................................................................................................61

9.1.1 The Information Element Bearer Capability (BC) ................................................................................61

9.1.2 The Information Element High Layer Compatibility ............................................................................63

9.1.3 The Information Element Low Layer Compatibility ............................................................................63

9.1.4 The Information Elements Calling Party BCD Number / Called Party BCD Number .........................63

9.1.5 Other Information Elements ..................................................................................................................63

9.1.6 The Information Element Bearer Capability is not mandatory .............................................................63

9.2 The message CALL CONFIRMED ......................................................................................................64

9.3 The message ALERTING ......................................................................................................................65

9.4 The message CONNECT ......................................................................................................................66

9.5 The message CONNECT ACKNOWLEDGE ......................................................................................67

9.6 The message DISCONNECT ................................................................................................................67

9.7 The message RELEASE ........................................................................................................................69

9.8 The message RELEASE COMPLETE..................................................................................................69

9.9 The line NO INFORMATION FIELD in the window Layer Messages ...............................................70

10 Services in GSM ................................................................................................................... 71

10.1 Excercise: Call ISDN-phone to Trace Mobile (MTC) ..........................................................................71

10.2 Excercise: Call Trace Mobile to ISDN-phone (MOC) ..........................................................................71

10.3 Excercise: Call with BC “facsimile group3“ and HLC “Fax Gr2/3“ ....................................................71

10.4 Remarks about Data Transfer in GSM ..................................................................................................72

10.5 Excercise: Call using BC “unrestricted digital information“ ................................................................72

10.6 Excercise: Call with mobile to the internet ...........................................................................................72

11 Supplementary Services in GSM ........................................................................................ 74

11.1 Excercise: CLIR and CLIP ....................................................................................................................74

11.2 Excercise: HOLD and broker‘s call ......................................................................................................75

11.3 Some remarks about ASN.1 ..................................................................................................................75

11.4 Call related SS messages .......................................................................................................................77

11.5 None-Call related SS messages .............................................................................................................78

12 The transmission of SMS ..................................................................................................... 81

12.1 Receiving a SMS ...................................................................................................................................82

12.2 Sending a SMS ......................................................................................................................................83

13 Controlling mobiles by AT-commands ............................................................................... 84

13.1 Mobile station interfaces .......................................................................................................................84

13.2 Controlling a mobile using AT-commands ............................................................................................84

13.3 AT-commands for controlling services ..................................................................................................85

13.4 AT-commands for controlling supplementary services .........................................................................86

14 Appendix ............................................................................................................................... 88

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