Understanding Signalling System No. 7 (C7)

2 Day Course
Code PWL071

This course has been retired. Please view currently available Signalling Training Courses.


Hide all

Concepts and Background (5 topics)

  • The functions of signalling systems
  • Access and trunk signalling
  • Signalling system requirements
  • Signalling in the ISDN
  • Signalling system recommendations of the ITU-T

Structure and Architecture (5 topics)

  • Signalling points and control
  • National and international signalling
  • Signalling performance issues
  • Overview of the message transfer part
  • Overview of the user parts

The Signalling Link (5 topics)

  • The physical level and its protocols
  • Signalling unit formats
  • Error detection and recovery operations
  • Flow control and error rate monitoring
  • A comparison with HDLC

The Message Transfer Part (5 topics)

  • Message handling in the network
  • Message routing and load sharing
  • Link and traffic management
  • Flow control and route management
  • Management of the message transfer part

The Signalling Connection Control Part (5 topics)

  • Applications of the signalling connection control part
  • Connectionless and connection-oriented SCCP services
  • SCCP message types and formats
  • SCCP routing and relaying
  • SCCP procedures and management

Transaction Capabilities (6 topics)

  • Applications of the transaction capabilities part
  • TC services and sublayers
  • TC operations and replies
  • Dialogues and dialogue control
  • TC message types and formats
  • The place of ROSE, ACSE and ASN.1

Signalling System User Parts (6 topics)

  • Telephone and ISDN user parts
  • User part message types and formats
  • Basic call procedures
  • Handling of supplementary services
  • End to end procedures
  • User part performance objectives

Applications and Test Methods (4 topics)

  • Overview of the mobile applications part
  • Overview of the intelligent network application protocol (INAP)
  • Other applications
  • The operations, maintenance and administration part (OMAP)


Delegates should have a good understanding of telecommunications principles.

What Our Customers Say

The training was delivered with a high level of expertise and excellence. Instructor was highly knowledgeable.”

Technical Trainer, Aviat Networks

Overall the course was really good, the trainer really understood the material and was very approachable.”

Customer Training Manager, Aviat Networks

Excellent course, informative and well-paced.”

CSE, Cisco

Course was very well outlined. Topics were great and bridged many gaps.”

System Engineer, Cable & Wireless

An excellent intro to video encoding & MPEG transport streams - I would definitely recommend it.”

Broadcast Engineer, Cisco

Definitely an excellent intro. Left me interested in learning more.”

Broadcast Engineer, Eircom

Excellent training course with real examples and practical classroom demonstrations.”

Transport Designer, Orange

Instructor knowledge and experience was excellent.”

Solutions Engineer, Akamai

Excellent course, very clear and well organised. Course content delivery was very good.”

Assistant Engineer, Dhiraagu

Very informative and appropriate.”

Network Support Technician, BT

Course PDF