1. Paging Messages1

1.2.3.

21.2.

3

2. System Info Messages

1 IDLE MODE Informations1.2.3.4.5.

2 DEDICATED MODE Information1.2.

3. Call Processing Messages12

Other L3 Messages Created by Jayadevan.N123456789

10111213141516171819

Paging Type 12 TMSI Combination1 TMSI & 1 IMSI Combination2 IMSI Combination

Paging Type 22 TMSI & 1 IMSI Combination3 TMSI Combination

Paging Type 3

System Info 1System Info 2System Info 3System Info 4System Info 13

System Info 5System Info 6

MS Originated CallMS Terminated Call

Channel Request for LU jayadevan.nirmalan@adacellworks.comLocation Update Request www.adacellworks.comLocation Update AcceptImmediate Assignment ExtendedDisconnect due to No CircuitsDisconnect Normal CauseReleaseRelease CompleteChannel ReleaseSync Channel InformationMeasurement ReportClassmark EnquiryClassmark ChangeChannel Request for Call Re-establishmentImmediate Assignment for Call Re-establishmentCM Re-establishment RequestCM Service RejectCM Service AcceptCell Broadcast Page

* Links are provided for every messages. To view the detailed

L3 Messages click the messages.

Note: This is just a tutorial material for Layer 3 messaging and call flow. These contains messages which we encounter in normal RF scenarios, All

the messages specified in GSM TS 4.08 is not covered. All the messages are taken from TEMS

4.1.1 version.

Note: This is just a tutorial material for Layer 3 messaging and call flow. These contains messages which we encounter in normal RF scenarios, All

the messages specified in GSM TS 4.08 is not covered. All the messages are taken from TEMS

4.1.1 version.

Other Messages123456789

1011121314151617

Channel Request for LULocation Update RequestLocation Update AcceptImmediate Assignment ExtendedDisconnect due to No CircuitsDisconnect Normal CauseReleaseRelease CompleteChannel ReleaseSync Channel InformationMeasurement ReportClassmark EnquiryClassmark ChangeChannel Request for Call Re-establishmentImmediate Assignment for Call Re-establishmentCM Re-establishment RequestCM Service Reject

Note: In this presentation the BTS & BSC is considered together as BSS part.

MOBILE ORIGINATED CALL

MS BSS

Complete Layer 3 Info

Cipher Mode CMD

Cipher Mode Complete

Assignment Request

Assignment Complete

Address Complete Message (ACM)

Answer Signal/Answer Message (ANM)

MOBILE TERMINATED CALL

MS BSS

MSC/VLR

Channel Request

Immediate Assignment

CM Sevice Request

Authentication Request

Authentication Response

Ciphering Mode Command

Cipher Mode Complete

Setup

Identity Request

Identity Response

Call Proceeding

Assignment Command

Assignment Complete

Initial Address Message

Alerting

Connect

Connect Acknowledge

MSC/VLR

Provide Roaming Number

Roaming Number

Paging Command

Complete Layer 3 Info

Cipher Mode CMD

Cipher Mode Complete

Assignment Request

Assignment Complete

Address Complete Message (ACM)

Answer Signal/Answer Message (ANM)

Initial Address Message

Paging

Channel Request

Immediate Assignment

Paging Response

Ciphering Mode Command

Ciphering Mode Complete

Identity Request

Identity Response

Setup

Call Confirmed

Assignment Command

Assignment Complete

Alerting

Connect

Connect Acknowledge

HLR PSTN

Address Complete Message (ACM)

Answer Signal/Answer Message (ANM)

HLR PSTN

Send Routing Info

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Initial Address Message (IAM)

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Routing Information

Address Complete Message (ACM)

Answer Signal/Answer Message (ANM)

Initial Address Message (IAM)

Paging Message Type 1 (2 TMSI Combination)

Paging Message Type 1 (1 TMSI & 1 IMSI Combination)

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Paging Message Type 1 (2 IMSI Combination)

Paging Message Type 2 (2 TMSI & 1 IMSI Combination)

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Paging Message Type 2 (3 TMSI Combination) Click to return to main page

Paging Message Type 3 ( Will contain only 4 TMSI) Click to return to main page

System Info 1 ( Idle Mode)

System Info 2 ( Idle Mode)

System Info 3 ( Idle Mode)

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System Info 4 ( Idle Mode) Click to return to main page

System Info 5 ( Dedicated Mode)

System Info 6 ( Dedicated Mode)

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System Info 13 ( Idle Mode, GPRS Information) Click to return to main page

1. Channel Request

2. Immediate Assignment

3. CM Service Request

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4.Authentication Request

5. Authentication Response

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6. Ciphering Mode Command

7. Ciphering Mode Complete

8. Setup

9. Identity Request

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10. Identity Response

11. Call Proceeding

12. Assignment Command

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13. Assignment Complete

14. Alerting

15. Connect

16. Connect Acknowledge

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1. Paging to the MS

2. Channel Request

3. Immediate Assignment

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4. Paging Response

5. Ciphering Mode Command

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6. Ciphering Mode Complete

7. Identity Request

8. Identity Response

9. Setup

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10. Call Confirmed

11. Assignment Command

12. Assignment Command

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13. Alerting

14. Connect

14. Connect Acknowledge

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SMS Request

SMS Service Request Message

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System Info 5 for the following Handover process

Measurement Report 1

Measurement Report 2

Measurement Report 3

Measurement Report 4

Measurement Report 5

Measurement Report 6

Measurement Report 7

Measurement Report 8

Measurement Report 9

Measurement Report 10

Measurement Report 11

Measurement Report 12

Measurement Report 13

Measurement Report 14

Measurement Report 15

Handover Command

Handover Access

Physical Information

Handover Complete

Physical Information

Channel Request for Location Updating

Immediate Assignment Extended

DL Disconnect due to NO circuits

DL Disconnect Normal Cause

Release

Release Complete

Channel Release

Sync Channel Information

Measurement Report

Location Update Request

Location Updating Accept

Classmark Enquiry

Classmark Change

Channel Request for Call re-establishment

Immediate Assignment for Call re-establishment

CM Re-establishment Request

CM Service Reject

CM Service Accept

Cell Broadcast Page

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