SyncWatch Another True Story

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SyncWatch Another True Story. Once Upon a Time in the North…. Scandinavian mobile operator moving to Ethernet mobile backhaul New backhaul network interfacing with DWDM core Backhaul equipment vendor already selected 2G / 3G Base stations in current install base require sync - PowerPoint PPT Presentation

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SyncWatchAnother True StoryChronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

Once Upon a Time in the NorthScandinavian mobile operator moving to Ethernet mobile backhaulNew backhaul network interfacing with DWDM core Backhaul equipment vendor already selected2G / 3G Base stations in current install base require syncPlatform for LTE and future technologies

TDM sync chain to be broken as migration occursFDD mode used to communicate with mobile devicesStable frequency required as reference to base stationsStability required = 16ppb (long term)

Considering options:Symmetricom Grandmaster & TP500 clients orIEEE 1588 solution built in to backhaul network equipment.

.Which option is the right one to use???

?Chronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

????????Setting up the Test EnvironmentEngineering test bed constructedTwo sites selected for packet clock trialsSSU2K, Master Packet Clocks, ClientsMax 6 Ethernet & 2 wave hops between master & clientEmbedded packet clock solution provisioned by vendorPurchased TP5000 & multiple TP500s from Chronos for evaluationChronos to commission and ensure correct operation

TP500SSU2KTP5000 PTP GMMaster Clock

Embedded Client

Native Eth. Radio

Chronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

What do I Need to Test?Initial setup of TP5000 & TP500Ensure all is installed and working correctlyInitial indicators of performance in environment

Suitability of the network & PDV characterisationEffects of changing QoS/CoS or bandwidth settings, etc. can be seen immediately May take time to show effect in clients with OXCOEffects of traffic loading, importantHard data to go back to developers if problems occur

Frequency stability at base station inputs (TP500 & Embedded)Ultimately, this is what mattersBase stations had E1/2.048 MHz input for syncG.823 Sync + 16ppb requirement a non-standards based standardEffects of changes to network PDVLong term stability over weeks of normal operation

How does SyncWatch help the above?

Chronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

The 2230 probe Connections UsedGPRS AntennaGNSS Antenna (e.g. GPS)C: E1/T1E: Freq, 50 ohmG: Ethernet RS-232/Craft I/FDC (-48VDC)B: 64kHz-200MHz 50 ohm/High ZA: E1/T1D: 64kHz-200MHz 50 ohm/High ZDry RelaysUSBF: 1PPSAux outputMgmt EthernetSync inputs Sync output Chronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

5SyncWatch Standalone modeReal time data / analysisLive TIE / MTIE / TDEVOne to one tool with laptopLive reporting of results for immediate interpretationEasy to deploy GPS antennaAUX Out provides PRC reference to PDV tester extremely handy!TimeMonitor Analyzer also useful for PDV data analysis

Provisioning PTP SolutionsTimeMonitor Software

Sync performance datastreamed live toTimeMonitor applicationProbeGPS

PDV TesterAux Out

TP500

Embedded ClientChronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

Live phase data displayed as it is received from probeSimple set-up, connect then hit StartEnter view mode to see MTIE/TDEV while still collecting data from probePhase plots can be imported into TimeMonitor Analyze for full mask based analysis

Phase / MTIE / TDEV View On The FlyStandalone TestingChronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

7

PTP Client Evaluation Setup

TP500 E1 OutSSU2K

GPSTP5000 GMMaster Clock

Test EnvironmentTP5000 and other Master Clock locked to SSU2K3x Network hops until microwave2x Microwave hops then multi-service switchE1s monitored at both PTP clients, reference is GPSNative Ethernet Radio2x Hops MaxEmbedded Client E1 OutMulti-Service Switch

Core InfrastructureChronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

SyncWatch Managed modeOne to many systemSingle server aggregates all sites dataTwo sites in this trial 100s possibleMonitoring and AlertingRelevant exception masks definedIf mask broke, could correlate this back to network eventsLong term performance now being loggedCompared performance of TP500 and Embedded clientsIntegrated with SNMP management system for alert reporting

Long term monitoring of performanceExternal reference

ServerSNMPProbe Fixed & waveNetworkTimeMonitor Software

Probe Probe Probe Probe GPSGPSGPS

Chronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

Server holds performance data for all sites in the trialCustomer evaluated both solutions over 1 monthNormal and exceptional traffic conditionsUsed SyncWatch graphs in their final reportPhase data for broken masksServer / Client Mode

Chronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

10Chronos / Symmetricom Test ResultsTP500 client performed to a high standard, with MTIE well inside G.823 and 16ppb masks.TP5000 was also evaluated and the customer liked the product Plot below taken from Chronos commissioning test, 2 microwave hops

MTIE Plot TP500 4 Hour Commissioning TestChronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

Who was Left Out in the Cold?TP500 outperformed Embedded client under normal operationEven though embedded solution employed transparent clocks at every nodeCustomer decided to go with Embedded Client solution, mainly based on cost, however. They were impressed with the TP5000 and wanted to keep sync master separate from traffic, looking to deploy multiple TP5000sWaiting for v1.2 release as this supports multicast PTP

Customer realised the importance of permanent monitoringOrdered 15x SyncWatch Probe, SyncWatch Server & SNMP optionSyncWatch written in to deployment guidelines and to be installed at newly migrated sites in every regionWorst case sites selected most radio hops from grandmasterG.823 + 16ppb masks configured on SyncWatch Server alarms forwarded to NOC if exception occursPool of SyncWatch probes kept in central location to be used for emergency or ad-hoc testing

Chronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

SyncWatchMonitoring in all Environments

Chronos Technology Ltd, Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD T: +44 (0) 1594 862200, F: +44 (0) 1594 862211