BROADBAND FAULT DIAGNOSTICS A BEST PRACTICE GUIDE

Broadband Fault Diagnostics – Best Practice Guide3 ONE SHOT CHECK – FAULT TYPESThe One Shot Check (OSC) is a comprehensive diagnostic tool that carries out anextensive series of checks and tests on a broadband circuit. As mentioned in the previoustable, key information is required to run this check regarding the circuit & the type of faultthe End User is experiencing. It is dependant on this Key information to run the correctseries of tests.As well as displaying the results of each individual test, the OSC will provide you with MajorFinding, Result & Recommendations. These give you a clear indication of your nextcourse of action for that particular End User reported problem.Fault TypeCannot ConnectCPE ProblemFreeze FrameIntermittentConnectionIntermittentConnection to SPLow ThresholdBreachedNoSynchronisationWhat does this mean? / When do I use it?Means the End User cannot connect at all but the Modem maybe in Sync (lights are on).End user is reporting a problem with a BT managed Modem orRouter. This should only be used for BT managed Modems /Routers.End user is experiencing problems with their Videostreamservice. Note: This means a video stream customer & shouldnot be used for BTVision.The end user is able to get an IP connection, however thecircuit drops or loses sync afterwards. (The Modem light mayflash). Should be used when an IP connection can be madebut the circuit drops or the circuit loses sync (Modem light mayflash)Should be used when a Datastream connection can be madebut the circuit drops or the circuit loses sync (Modem light mayflash)Should be used on a Broadband Max circuit when the linespeed (downstream line rate) drops at least 30% below thestated (pre determined) minimum acceptable level (maximumstable rate). This is known as the fault threshold rate.Should be used when the circuit cannot sync (Modem lightmay be flashing).No Web PagesPremature QoSsessionTerminationQos SessionPerformanceProblemSlow Speed (EPPfor DSL MAXcircuits, SCR forFixed Rate)Should be used when a connection can be made but the EUcannot display any web pages.This fault type is for a future development and is not currentlyavailable.This fault type is for a future development and is not currentlyavailable.When the End user is complaining of a speed issue and hasrun a BT speedtest on their circuit. The OSC will only “lookback” five days when this fault type is selected so the EU musthave run a speedtest within the past five days of the testIssue 1: 2006© British Telecommunications plcTHIS IS FOR TRAINING PURPOSES ONLY AND IS SUBJECT TO CHANGE BY BTPage 6 of 10