|A G.hs Handshaking Protocol Analyzer For ADSL||Matthew Langlois||
A protocol analyzer is a device that non-intrusively monitors bi-directional communications on a link, demodulates the physical layer signals, and captures the raw binary data for subsequent state and timing analysis. There are no commercial products currently available that perform this function for ADSL link initialization procedures. In this project, a MATLAB application was developed that enables capture (via a digital sampling oscilloscope) and protocol analysis of the first segment, known as handshaking, of the ADSL link initialization procedure. The protocols of interest are ITU-T G.994.1 (G.hs), which defines the activation and handshaking procedures used by complaint ADSL equipment, and ITU-T G.992.1 (G.dmt), which defines the physical layer requirements of ADSL equipment utilizing the Discrete Multi-Tone (DMT) line code.
|Theses||December 14, 2001|
|ADSL Systems - An Overview||Praveen Reguraman (UNH-IOL)||
An overview of ADSL systems that includes network architecture, protocol architecture, typical ADSL implementations, RFC1483 bridging, PPP over ATM over ADSL, and PPP over Ethernet over ADSL.
|Tutorials||June 26, 2012|
|ADSL Tutorial||Matthew Langlois (UNH-IOL)||
This tutorial provides an overview of ADSL technology and focuses on the physical layer as defined in ANSI T1.413-1998. From the introduction: "The demand for high-speed data networks in the "last mile" has driven the need for robust, interoperable, and easy to use multi-vendor Digital Subscriber Line (DSL) access solutions. DSL collectively refers to a group of technologies that utilize the unused bandwidth in the existing copper access network to deliver high-speed data services from the distribution center, or central office, to the end user. DSL technology is attractive because it requires little to no upgrading of the existing copper infrastructure that connects nearly all populated locations in the world. In addition, DSL is inherently secure due to its point-to-point nature."
|Tutorials||June 26, 2012|
|DSL Crosstalk Simulation and Calibration||Tim Clark (UNH-IOL)||
The performance of DSL transceivers can be impaired by interference from other transceivers operating over wires in the same binder group. It is therefore important to test DSL transceivers in the presence of crosstalk, which can be simulated in a programming environment such as MATLAB. The simulated crosstalk can then be exported to an arbitrary waveform generator (AWG) for injection onto the line through a high-impedance noise injection circuit. This document describes a method of crosstalk simulation and calibration whereby white gaussian noise (WGN) is passed through a frequency-domain filter that gives the noise the spectral characteristics of crosstalk. The crosstalk is calibrated by measuring its power with a vector signal analyzer (VSA) and adjusting the output level on the AWG to achieve the desired noise power. By using MATLAB to estimate the simulated crosstalk power in the same manner as the VSA, the calibration can be performed in MATLAB without taking actual measurements.
|White Papers||May 11, 2004|
|DSL Physical Layer Testing||Lincoln Lavoie (UNH-IOL)||
An overview to DSL Physical Layer Testing.
|Tutorials||February 24, 2012|
|GPON: Why Conformance and Interoperability Testing are Key||Lincoln Lavoie||
An overview of Gigabit Passive Optical Networks (GPON) conformance and interoperability capabilities. A brief introduction to the power of PONs.
|Tutorials||June 27, 2012|
|Newton||Harry Newton with Ray Horak contributing editor||
From the back cover: "I wrote this book for those of us in the world's most exciting industries - telecommunications, networking and the Internet. I deliberately didn't write a book that only geeks could understand. I wrote a business book that you and I could understand. I explain the technical concepts in non-technical , business language that anyone in business (whether buying, selling or investing) should be able to understand. Some of my definitions are short. Some are encyclopedic. My focus is 720 practical. What the term means. What the technology does. What benefits the technology confers. which pitfalls to watch for. Use this book in your day-to-day business life. Dip into it before a meeting with a vendor, a customer, a broker or a boss. I've got 19 years in this book. My readers and my contributing editor, Ray Horak, have contributed enormously over the years. By now, all of us have made this dictionary pretty darn good. I'm proud of this edition."
|Recommended Textbooks||June 26, 2012|
|Testing the Limits: An IOL Forum for TSN and SPE Validation Updates||Bob Noseworthy||
Join UNH-IOL's Bob Noseworthy in our discussion centered around IEEE 802.1, specific to Time Sensitive Networking (TSN) and IEEE 802.3 Single Pair Ethernet (SPE). Learn about the following IOL updates: 10BASE-T1L and Advanced Physical Layer (APL) work, 1000BASE-T1 validation, plans for MultiGigBASE-T1, TSN test NIC status, validation of Time Aware Shaping, PTP, UNH-IOL BitPhyer based preemption testing, including negative test conditions & IEEE Certification for IEEE 1588 profiles and more. Live discussion as well!
|External Links||December 13, 2021|
|VDSL Modulation Schemes: MCM vs. SCM||Tim Clark (UNH-IOL)||
This presentation provides an overview and comparison of the two proposed VDSL modulation schemes.
|Tutorials||October 2, 2002|
|Why And How To Test IPv6 Interoperability||Timothy Winters||
Check out this podcast as we discuss why testing v6 is crucial, and look at interoperability initiatives including the USGv6 program, a NIST effort to spur v6 adoption. Topics discussed include:
|External Links||August 13, 2018|
|10 Gigabit Ethernet Alliance||10 Gigabit Ethernet Alliance||
Link to the 10 Gigabit Ethernet Alliance main page.
|External Links||June 29, 2012|
|10 Gigabit Ethernet Clause 48 Tutorial||Vinod Venkatavaradan||
Clause 48 overview
|Tutorials||December 12, 2001|
|10 Gigabit Ethernet Clause 49 Tutorial||Sowmya Luckoor||
|Tutorials||October 22, 2001|
|10 Gigabit Ethernet Clause 50 Tutorial||Andy Baldman||
|Tutorials||December 13, 2012|
|10 Gigabit Ethernet Clause 53 Tutorial||Eric Lynskey||
|Tutorials||October 22, 2001|
|10 Gigabit Ethernet Deficit Idle Count Tutorial||Eric Lynskey||
Overview of deficit idle count
|Tutorials||October 22, 2001|
|10 Gigabit Ethernet MAC Tutorial||Rupert Dance||
|Tutorials||October 21, 2001|
|1000-T Jitter Test Channel||Jon Beckwith||
Subclause 188.8.131.52.1 of the IEEE 802.3 Standard defines a test channel to be used in the testing of the jitter on the reference clock of 1000BASE-T devices. The channel consists of two short segments of 120m UTP Category 5 compliant cable, along with one (or two, if necessary) long (the exact length is dependent upon the attenuation of the entire channel) segment of 100m UTP Category 5 compliant cable. The channel is to meet or exceed the insertion loss, crosstalk, and return loss requirements as specified in clause 40.7. The objective of this paper is to outline and describe, in detail, the specifications defined in subclause 184.108.40.206.1 of the IEEE 802.3-2002 standard for the Jitter Test Channel, and observe the results of the testing of a completed test channel. Included are plots, outlining the characteristics of the constructed test channel, along with the limits of each specific test.
|Tutorials||September 24, 2014|
|1000BASE-T Physical Coding Sublayer (PCS) Overview||Bob Noseworthy||
GE 1000BASE-T, Physical Coding Sublayer (PCS) functional basics and overview.
|Tutorials||February 29, 2000|
|1000BASE-T Technology Overview||Adam Healey||
|Tutorials||November 19, 1998|
|1000BASE-X Physical Coding Sublayer (PCS) and Physical Medium Attachment (PMA)||Jon Frain||
A brief tutorial describing the 1000BASE-X PCS and PMA sublayers that are defined in Clause 36 of the IEEE 802.3 Standard.
|Tutorials||April 13, 2012|
|100BASE-TX: Physical Medium Dependent||
An overview of the 100BASE-TX PMD created by the UNH-IOL.
|Tutorials||June 28, 2012|
|10BASE-T Medium Attachment Unit||
An overview of the 10BASE-T Medium Attachment Unit.
|Tutorials||July 5, 2012|
|10Gig Link Fault Signaling||Eric Lynskey||
Short overview of how 10Gig link fault signaling works.
|Tutorials||September 5, 2013|
|40 Gigabit Ethernet and 100 Gigabit Ethernet Technology Overview||John Dâ€™Ambrosia, Force10 Networks, David Law, 3COM, and Mark Nowell, Cisco Systems||
Overview of 40 and 100 Gigabit Ethernet Technology; provided by the Ethernet Alliance, June 2010
|External Links||July 5, 2012|