SIGNALING SYSTEM NO 7 (SS7)
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SIGNALING SYSTEM NO 7 (SS7). Technical seminar SIGNALING SYSTEM NO-7 (SS7). National Institute of Science & Technology. Submitted by : Sunanda Panda Roll No :EC200157246 Under the guidance of N. Shrinivasu. [1]. SUNANDA PANDA. SIGNALING SYSTEM NO 7 (SS7).

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National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

Technical seminar

SIGNALING SYSTEM NO-7 (SS7)

National Institute of Science & Technology

Submitted by : Sunanda Panda

Roll No :EC200157246

Under the guidance of

N. Shrinivasu

[1]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

INTRODUCTION TO SIGNALING SYSTEM

  • PSTN signaling

  • Common Associated Signaling (CAS)

  • Common Channel Signaling (CCS)

National Institute of Science & Technology

[2]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

INTRODUCTION TO SS7

  • Evolution of SS7

  • Features of SS7

  • Functions of SS7

National Institute of Science & Technology

[3]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

SIGNALING ARCHITECTURE

  • SS7 signaling links

  • A—Links

  • B—Links

  • C—Links

  • D—Links

  • E—Links

  • F--Links

National Institute of Science & Technology

Figure : SS7 signaling Links

[4]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

SIGNALING POINTS OF SS7

  • Service Switching Points (SSP)

  • Signal Transfer Points (STP)

  • Service Control Points (SCP)

National Institute of Science & Technology

Figure : SS7 signaling points

[5]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

SIGNALING LINK MESSAGES

  • Message signal unit (MSU)

  • Link status signal unit (LSSU)

  • Fill-in signal unit (FISU)

National Institute of Science & Technology

[6]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

FORMATS OF DIFFERENT SIGNALING LINK MESSAGES

Figure 1:MSU format

National Institute of Science & Technology

Figure 2:LSSU format

Figure 3:FISO format

[7]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

SS7 PROTOCOL STACK

Different layers of SS7 protocol stack

MTP,SCCP,TUP,ISUPTC,OMAP & ASE

Figure :. The OSI Reference Model and the SS7 Protocol Stack

National Institute of Science & Technology

[8]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

MESSAGE TRANSFER PART (MTP)

  • Signaling Link Message

  • Signaling Network

National Institute of Science & Technology

[9]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

ISDN USER PART (ISUP)

  • ISUP message structure

  • Initial address message

  • Address complete message

  • Answer message

  • Release message

  • Release complete messages

National Institute of Science & Technology

[10]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

TRANSACTIONS CAPABILITIES APPLICATION PART (TCAP)

  • Transaction portion

  • Component portion

National Institute of Science & Technology

[11]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

SERVICES PROVIDED BY SS7

  • There are 3 main types of services provided by Ss7 network.

  • The Touchstar

  • 800 services

  • alternate billing services

National Institute of Science & Technology

[12]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

USES AND APPLICATIONS OF SS7

  • Thet use of SS7 is not for call setup and teardown, but rather for accessing databases.

  • Examples of some applications supported by SS7 are:

  • • PSTN and mobile services

  • • ISDN (Voice and Data)

  • • Interaction with Network Databases and Service

  • Control Points for ervice control

  • • Operations dministration and Maintenance of Networks

National Institute of Science & Technology

[13]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

ADVANTAGES OF SS7

  • Faster call set-up

  • Greater trunking (or Queuing) efficiency

  • Information transfer

National Institute of Science & Technology

[14]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

GLOBAL SS7 MARKET OVERVIEW

  • SS7 related equipment

National Institute of Science & Technology

  • SS7 enable equipment

[15]

SUNANDA PANDA


National institute of science technology

SIGNALING SYSTEM NO 7 (SS7)

CONCLUSION

  • • SS7 is the world’s largest data network. It links telcos, cellular long-distance networks nationwide and worldwide.

  • • SS7 interconnects thousands of telephone company providers into one common signaling network.

  • • SS7’ll continue to evolve as new features are added to the Advanced Intelligent Network.

National Institute of Science & Technology

[16]

SUNANDA PANDA


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