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Unit 4

Signaling System 7 (SS7). Unit 4. Objectives. Describe SS7, its purpose, history, states and signaling Describe what signaling system 7 is. List and explain the SS7 Node types. List the different classes of SSP’s. Describe the differences between CAS and CCS signaling.

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Unit 4

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  1. Signaling System 7 (SS7) Unit 4

  2. Objectives • Describe SS7, its purpose, history, states and signaling • Describe what signaling system 7 is. • List and explain the SS7 Node types. • List the different classes of SSP’s. • Describe the differences between CAS and CCS signaling. • Trace the reasoning why SS7 was developed. • Explain what Point Codes are and why they are used. • Describe the different point code formats. • Explain the protocols in the SS7 upper layer. • Explain the various Intelligent services that are provided to subscribers.

  3. Basic SS7 Device Icons

  4. National and International SSP’s

  5. North American Switch (SSP) Hierarchy

  6. Placement of SCP

  7. Quasi-Associated Signaling

  8. Non-Associated Signaling

  9. Links within a Link Set

  10. A-, B-, and C- links

  11. OPCs, DPCs and APCs Interconnected

  12. The Onion-Like Layers of the ANSI Point Code

  13. ITU Point Code Structure

  14. Normal Retransmission Procedure

  15. Congestion Timer Operation

  16. Call Leg CIC Assignments

  17. Relationship between FEs and PEs in the IN

  18. Originating Switch LNP processing Direct to Recipient Switch

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