Course Objectives:
To provide participants with the knowledge needed to understand the EWSD system architecture.
Expected Accomplishments:
- Knowledge of the system units and their functions
- Understanding the basic structure of EWSD software system
- Knowledge of the basic O&M tasks handled by the system
Who can benefit:
Engineers/Technicians interested in understanding EWSD system functioning.
Prerequisites:
Basic understanding of Digital Switching
Systems.
Course Outline:
- Hardware
- EWSD components
- Task Distribution
- InterfacesDigital Line Unit (DLU)
- DLU overview
- System structure
- Emergency service of DLULine/Trunk Group (LTG))
- LTG Functions
- Hardware and Functional types of LTGSwitching Network (SN)
- SN overview
- Switching
- SN versions
- Semi permanent connections
- Structure of SN (B)Coordination
- Coordination tasks
- Message Buffer
- Central Clock Generator
- System Panel
- Coordination ProcessorCCNC
- Common Channel Signaling
System N0. 7 - CCNC overview
- CCNC s
- Software Systems
- Software Architecture
- APS
- Operating system
- Safeguarding Programs
- User software
- Call Processing Programs
- Administrative Programs
- Maintenance ProgramsCall Setup
- Fundamentals of call setup
- Call setup between A-Subscriber and A-LTG
- Evaluation by CP
- Call setup between B-Subscriber and B-LTG
Delivery Method:
Instructor led classes with CBTs.
Related Training:
- Concepts of PSTN Digital
Exchanges. - 30-channel PCM concepts
- Fundamentals of Signalling System No. 7
