Introduction:

Good traffic engineering is not only an essential element of a network’s initial design but also critical to its smooth, ongoing operation. However, even a simple question such as “how to measure the amount of traffic” defies an easy answer! As this course makes clear, a good part of the challenge is in posing the right questions. Upon completion of this course, you will be able to ask the right questions, make viable conjectures, and find practical means of confirming or refuting those conjectures. This will allow you to make proper use of the teletraffic models such as Erlang-B and Erlang-C as well as other, potentially better, models. While correct usage of such models is key to the design and ongoing optimization of any communications network, this course will focus heavily on the issues specific to mobile communications. This will enable you to use and expand the various models to account for new networks, growing network demands as well as operational optimization, such as considering handover regions and location area boundaries

Audience:

Engineers new to the field of telecommunications, telecommunications management, commercial or enterprise oriented networks for both voice and/or data. An electrical engineering degree or equivalent background is desired, but not required.

Prerequisites:

You should have some familiarity with communications engineering as well as a general understanding of data networking and the IP protocol concepts. For those unfamiliar with IP, the course can be extended to three days to include a review of the IP background.

Customize it:

This 2-3-day Traffic Engineering course will be customized to your needs and specifications. Eno.com will assist you in identifying those needs and specifications. A word to the wise, there are many vendors of wireless training. They will typically have a broad and general course, one size fits all, already developed and just put your organization’s name on the title slide. This minimizes their effort and time investment. At Eno.com, every course is made to your exact and exacting specifications. We help you ensure what you are getting is what you really need even if at the beginning you weren’t too sure of what that was. We fit the class to your needs. We never fit you into our “standard”, one size fits all, class.

Objectives:

At the end of this course, the participants will be able to understand traffic engineering for both voice and data networks, use of the Erlang B, extended Erlang B, and Erlang C formulae, accounting for randomness, implications of service type to bearer path characteristics and therefore bandwidth requirements, traffic engineering for data networks, and traffic simulation theory.

Course Outline

Telecommunications Overview Brief history of telecommunications Telecommunications systems What is capacity? What is capacity planning and why is it performed? What are trunks? What is multiplexing? What are trunk groups? What are switches? What is a class 5, a class 4 switch? Overview of packet data networks What is a router? What is a bridge? What is a host? Telecommunications Transport Technologies Overview of the T-Carrier system Overview of the optical carrier system Ethernet ATM Frame Relay Services Requirements Services definitions and traffic types generated Voice and data challenges Real time versus non real time applications Store and forward/buffering Synchronization, delay, jitter Voice Traffic Engineering Overview What is an Erlang? Basic queuing theory Randomness Erlang B Extended Erlang B Erlang C Basic exercises in using Erlang tables Erlang efficiency curves, and relation to trunking Optimization exercises for trunk utilization Traffic Engineering Exercises (Traffic, Blocking, Lines) Data Traffic Engineering Overview Services definitions Traffic signatures Real time versus non real time Bandwidth calculators Impact of transmission networks to service assurance Correcting for different transmission mediums to meet bandwidth requirements Impact of buffers Buffer analysis and planning Traffic Engineering Exercises (Services mix, rate of arrival, bandwidth calculations) VoIP/Data Engineering Overview What is VoIP? How does VoIP differ from other applications? What are the services requirements of VoIP? What other applications are similar to VoIP? Non-similar? Traffic simulators overview Traffic simulator output and meaning Impact of network design, optimization and planning Buffer analysis Final bandwidth calculations Traffic Engineering Exercises (class of service, QoS, services mix, rate of arrival, bandwidth calculations)