VoIP systems

Target audience:

This online course is designed for those who will be responsible for the design or maintenance of Voice over IP (VoIP) telephony systems, particularly those providing a public service over a next generation network.

 

Course prerequisites:

An understanding of the principles and operation of SIP-based Voice over IP systems. It is recommended that the PTT online course "Voice over IP" is studied before attempting this course.

 

Course objectives:
By the end of this course you will be able to:

• describe the components, facilities and operation of Megaco Voice over IP systems that use the gateway control protocol as specified by the ITU recommendation H.248. 
• describe the role and facilities provided by the various SIGTRAN protocols in relation to the transport of signalling messages between a circuit-switched network and a Voice over IP network.  
• describe the role and facilities provided by the SIP-I and SIP-T protocols with reference to the preservation of PSTN signalling information in a VoIP system.
• describe the role of, and compare, User ENUM and Carrier ENUM services, with reference to the translation between E.164 telephone numbers and other addressing formats.
• describe the role of the functional components of an IP Multimedia Sub-system (IMS) and the associated transport control elements of a next generation network. 
• explain the benefits of employing network function virtualisation for the IMS functions.
• describe the role and operation of a PSTN emulation service based on the use of an IMS with reference to access gateways and the access gateway control function. 
• describe the role of a multi-service access node (MSAN) with reference to the integration of voice, video and Internet services to customers.

 

Approximate study time: 7 hours 

 

Delivery platform requirements:
To access the course, a computer/tablet running a browser such as Chrome, Safari, Edge etc. is required. The device should have an active Internet connection and a screen resolution of at least 1024x768.