3-day Instructor-led training with theoretical and practical exercises, 0900 - 1700

On completion of this course the participants, will be able to:

• understand GSM network on a system-wide level
• describe functionality of the SS7 network in GSM environment
• describe message routing on MTP and SCCP levels
• describe signaling procedures on different protocol levels:
• MTP 1, 2 and 3
• ISUP
• SCCP
• BSSAP
• TCAP, MAP
• MIN

Signaling System no. 7 in GSM course focuses on signaling between GSM Core Network nodes. The course also describes co-operation between Core Network and Base Station System during procedures like call set-up and location update.

Beside being familiar with the abovementioned topics, the course gives participants the opportunity to:

• analyse SS7 protocol traces
• understand message flows for the SS7 procedures
• find the potential reasons for the problems that can occur in live GSM network.

The participants should have attended GSM Technology course or should have the equivalent knowledge. Practical experience in GSM would be recommended.

The course is intended for experienced network engineers, network tuning staff and anyone with network experience, who needs in depth technical knowledge on functionality of GSM signaling.

1. GSM NSS Introduction
1. Introduction to GSM;
1. Mobile Communication Trends;
2. GSM Network Overview;
1. Cellular Telephone Systems;
2. GSM System Architecture;
3. GSM Interfaces and Protocols;
3. GSM Services;
1. Basic Services;
2. Supplementary Services;
3. Packet Data Service;
4. Wireless Interfaces;
1. Physical View;
2. Timeslot and Frequency Resource;
3. Air Interface;
4. Timeslot and Frame Structure;
5. Logical Channels;
6. Numbering Arrangement;
5. Call Signaling Flow;
1. Mobility Management Service;
2. Security Management Service;
3. Error Recovery Management;
4. Call Control Management Service;
6. GSM Signaling Flow Exercises;


2. GSM Interfaces
1. A Interface;
2. B Interfaces;
3. C and D Interfaces;
4. E Interface;
5. F Interface;


3. No. 7 Signaling System
1. SS7 Overview: CAS and CCS7
2. Protocol Stack;
1. MTP1 Layer;
2. MTP2 Layer;
3. MTP3 Layer;
4. Application Layer;
3. Network Architecture and Elements;
1. SP and STP Concepts;
2. OPC and DPC Nodes;
3. Signaling Routing Analysis
4. Signaling Connection Mode
4. ISUP Signaling
1. ISUP Message Flow;
2. Signaling Units: FISU, LSSU and MSU;
3. ISUP detailed IAM, ACM Analysis;
4. ISUP detailed ANM, REL Analysis;
5. SS7 MTP3 Exercises;
6. ISUP Call Set-up Exercises;
7. ISUP Ethereal Traces Case Analysis;


4. Introduction to SCCP and GT Routing
1. Function of SCCP;
2. Limitation of MTP3;
3. Circuit/ Non-circuit Related Signaling;
4. DTAP Messages
5. BSSMAP Messages
6. SSN Introduction
7. SCCP Addressing
8. GT Routing/ Number Analysis
9. GT Case Studies/ Signal Flow
10. SCCP Messages
11. SCCP Addressing Exercises;
12. GT Routing Exercises;


5. GSM TCAP Layer
1. TCAP Dialogues;
2. TCAP Transaction;
3. TCAP Application: Location Update;
4. TCAP Trace Analysis;
5. TCAP Protocol Exercises;


6. GSM MAP Signaling
1. GSM Functional Services;
2. BSSAP Signaling
3. SCCP Modes
4. BSSMAP Analysis
5. DTAP Analysis
6. MAP Protocol Services
7. MAP Protocol Version
8. MAP Signaling Flow: Location Update
9. MAP Fault Recovery Services
10. MAP Subscriber Data Management
11. MAP Protocol Fall-back
12. MAP Authentication Service
13. MAP Calling Service
14. MAP Supplementary Services
15. MAP Services for SMS
16. SCCP User-Part (MAP) Exercises;


7. Introduction to Mobile Intelligent Network (MIN)
1. IN Protocols (signaling scenarios);
2. INAP – Intelligent Network Application Part;
3. CAP – CAMEL Application Part;
4. CAP/INAP operations.
5. MIN SSP-SCP Communication;
6. BCSM – Basic Call State Model;
7. MIN Service triggering;
8. CAMEL Subscriber data (in HLR and VLR);
9. MIN Signaling Flow