Knowledge Base

Title Authors Last Update Category
SATA_Protocol_Chapter_11_and_12 IOL

Overview on the device command Layer Protocols.

September 23, 2014 Tutorials
SATA_Protocol_Chapter_8 IOL

Overview of the Chapter 8 OOB and Phy Power States.

September 23, 2014 Tutorials
SATA_Protocol_Chapter_9 IOL

Presenting the topics: 8b10b Encoding, SATA Primitive, ALIGN use in SATA, Hold use, & Cont use.

September 23, 2014 Tutorials
SATA_Use_Cases IOL

SATA uses in the enterprise
SATA uses in personal computing
Device form factors
ODDD, HDD and SSD Devices
Port Multipliers.

September 23, 2014 Tutorials
SATA_Use_Cases_2 IOL

SATA uses in the enterprise
SATA uses in personal computing
Device form factors
ODDD, HDD and SSD Devices
Port Multipliers.

September 23, 2014 Tutorials
SATA_Use_Cases_Presentation IOL

SATA uses in the enterprise
SATA uses in personal computing
Device form factors
ODDD, HDD and SSD Devices
Port Multipliers.

September 23, 2014 Tutorials
SCSI Command Overview IOL

Overview of the basic SCSI information needed to identify each command.

September 23, 2014 Tutorials
Seconds per... Jeff Laird

A spreadsheet to help one develop a sense of time scales

May 9, 2012 White Papers
Simulating Gaussian Crosstalk for DSL Testing Timothy R. Clark

The presence of crosstalk is a major detriment to the performance of Digital Subscriber Line (DSL) transceivers. It is therefore important to test performance under a wide variety of crosstalk scenarios. This thesis presents the development of a crosstalk noise generation system as a tool for DSL performance testing. Where many commercially available solutions are limited to specific testing needs, the system presented here is universal and can simulate virtually any noise scenario conceivable for DSL deployment.
Several requirements for the accurate frequency domain modeling of DSL crosstalk are presented. The time domain properties of crosstalk were also studied with particular attention paid to the amplitude distribution. The importance of a Gaussian amplitude distribution and the limiting effect of a finite-length pseudo-random crosstalk sequence on the "tail" of the Gaussian distribution were investigated. A method of forcing finite-length crosstalk sequences to have a "near-Gaussian" amplitude distribution is proposed.

June 27, 2012 Theses
SIP Trunk Interworking: How the SIP Forum is Improving Interoperability between SIP-PBXs and Service Providers James Swan (UNH-IOL), John Berg (CableLabs), David Hancock (CableLabs)

Interworking issues continue to be an obstacle to achieving scale on SIP Trunk deployments. Due to variances in the SIP profiles supported by different SIP Trunk products, Service Providers and vendors are forced to spend significant time and people resources to identify and resolve interworking issues for each new SIP-PBX/SSP-network combination. The SIP Forum has been actively working on multiple fronts to resolve this interworking roadblock, and to move the rollout of SIP Trunking service toward more of a plug-and-play deployment model.

This session provides a status update on two important SIP Forum initiatives in this area:

1. The SIPconnect 1.1 Recommendation: This recommendation defines a SIP profile for the SIP Trunk interface between a SIP-PBX and Service Provider network. It defines procedures to resolve common interworking issues at the SIP Trunk interface for capabilities such as security, PBX registration, and call features.

2. The SIPconnect 1.1 Interop and Compliance Program: The focus of this program is to encourage the adoption of SIPconnect 1.1 through a series on interop events, and ultimately to develop a rigorous test-platform-based compliance program that will enable vendors to indicate product compliance with SIPconnect 1.1.

July 3, 2012 External Links