Distributed Network Surveillance System at Probe Level (NetSurveyorWeb™ Lite)
NetSurveyorWeb™ Lite (PKV169) works with any GL’s protocol analyzer probes as an addon tool, enhancing the capabilities of network surveillance
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NetSurveyorWeb™ Lite
NetSurveyorWeb™ Lite (PKV169) works with any GL’s protocol analyzer probes as an addon tool, enhancing the capabilities of network surveillance for 24/7 availability, real-time and historical storage of CDRs, non-intrusive monitoring, handling larger volume of data at probe level, play voice files, analyze voice/fax traffic, perform critical voice/fax/delay measurements, consolidate different reports, build custom KPIs, filters to quickly drill-down to calls-of-interest, alerting, and reporting.
Overview
For operators looking for cost-effective and simple plug-and-play solution, GL offers NetSurveyorWeb™ Lite (PKV169), an integrated and simplified web-based system that is distributed at probe level. The NetSurveyorWeb™ Lite (PKV169) works with any GL’s protocol analyzer probes as an addon tool, enhancing the capabilities of network surveillance for 24/7 availability, real-time and historical storage of CDRs, non-intrusive monitoring, handling larger volume of data at probe level, play voice files, analyze voice/fax traffic, perform critical voice/fax/delay measurements, consolidate different reports, build custom KPIs, filters to quickly drill-down to calls-of-interest, alerting, and reporting. Both the web-server components and database engine run on the probe system, allowing for easy plug-and-play and simplified deployment process to start monitoring the networks.
The network backbone contains a wealth of information that can be monitored and collected to support diagnostic, troubleshooting, and fraud prevention activities. Few important aspects of network surveillance include, Performance Monitoring, Security, Fraud Prevention, Physical Layer monitoring, Billing Verification, Remote Protocol Analysis, Failure Prediction, Traffic Engineering, Call Quality Monitoring and Troubleshooting.
GL also offers NetSurveyorWeb™ (PKV170) a web based centralized network surveillance system for IP, Wireless, and TDM Networks to support operators and service providers to perform functions such as real-time analysis, historical storage, retrieval, querying, and display of Call Detail Records (CDRs) by non-intrusively connecting to TDM, Optical, or IP networks.
GL’s NetSurveyorWeb™ Lite supports operators, and service providers to perform all the above functions. Below is the list of applications -
- IP Network Monitoring and Surveillance System (passive / non-intrusive) - SIP, RTP, H.323, SIGTRAN, MAP, CAP, INAP, MGCP, MEGACO
- Wireless Network Monitoring and Surveillance System (passive / non-intrusive) – LTE / VoLTE, Diameter, IMS, UMTS, and GSM
- TDM and Optical Network Monitoring and Surveillance System (passive/non-intrusive probes) - SS7, ISDN, CAS, GSM, TRAU
- Digital T1 E1 Line Monitoring, Testing, and Diagnostic System
- Monitoring Speech Activity with Voice and Delay metrics – Voice Band Analysis (VBA) and Delay Measurements
Key Benefits of NetSurveyorWeb™
- Historical data retention up to 9 GB
- All Signaling and call quality shall be measured, reported and provided in a dashboard format.
- Signaling Performance
- Problem alerts and indicators
- Service health
- Call Volume
- Call Duration
- Quantity Vs Time
- Speech Metrics (Active Speech Level, Activity Factor, Noise Level, DC, RMS)
- Traffic Classification (voice, fax, digits, tones)
- Delay Measurements
- Echo Measurements
- Ability to identify and analyze CDR using Key Performance Indicators (KPI’s)
- Ability to listen to the Voice calls
- Set alarm conditions and generate alerts of different types like email alert, visual alert, audible alert, or even log into tables for future analysis
- Reports are displayed both in tabular and graphical formats; customize reports and graphs based on SQL queries
- Graphs provided for Call Completion Ratio, Answer Call, Listening MOS, Conversational MOS, Failure Cause, and Call Duration
- Real-time data displays information such as called number, calling number, source & destination IP address, RTP packet details, call flow graph, frame decodes and more
- Apply single or multiple filters for data analysis; use logical operators between filters
- Ability to export both graphical and tabular reports view as PDF
- Ability to export the call detail records displayed based on time filter or record index as PDF and CSV.
Typical Applications
- Comprehensive analysis from overall network health to detailed protocol monitoring
- Call Detail Records, fraud detection and location, remote protocol analysis and troubleshooting, real-time signaling monitor, traffic optimization engineering, and statistics.
- Determine actual call signaling routes to verify network functionality under all situations including congestion and loss of SS7 nodes.
- Revenue and billing verification, alarm monitoring, intrusive testing.
- Quality of service measurements, call trace and recording.
NetSurveyorWeb™
PC Requirements |
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License Requirements |
Requires PKV170 + Probe Level Analyzers |
Cables and Accessories |
RJ-45 cables |
NetSurveyorWeb™ Lite
PC Requirements |
|
License Requirements |
Requires PKV169 + Probe Level Analyzers |
Cables and Accessories |
RJ-45 cables |
System Architecture
GL's NetSurveyor™ system has a three tier architecture. The first layer consists of GL's Protocol Analyzer Probes which are capable of tapping into live call traffic and non-intrusively capture signaling message summary and build CDRs. The second layer is the Database Store Layer where the captured data is stored. The last layer is the Data Access Layer where the data presentation logic is contained. Each of these components are briefly explained below.
- Probe computers collecting layer 1 (physical layer), layer 2 (data link layer) and layer 3 (network layer) information. Probes can be T1 E1/T3 E3/ OC-3 STM-1/ OC-12 STM-4/IP.
- Probe computers run protocol analysis applications along with the necessary hardware and software.
- These probes could be controlled locally using the protocol analyzer application or remotely using GL's Client-Server application.
- The analyzer hardware for TDM and optical networks can be connected non-intrusively in Monitor or Bridge Modes, or alternatively the data can be looped through the cards.
- Multiple Link Sets per T1 E1 (through Digital Cross Connect Grooming) - multiple 64 kbps signaling channels per T1 E1 can be monitored simultaneously by grooming through a digital cross-connect - see diagram below.
- Probes non-intrusively monitor physical lines of the network and forwards call detail records (CDRs), protocol summary, frame data in hex dump, and statistics to a central database.
- Probes connect via TCP/IP to ODBC compliant real-time database loader.
- Only precise and filtered data (user selectable) is collected into the centralized database.
Probe Types –
- The PacketScan™ is a feature-robust Windows® based software tool that captures and monitors live IP traffic. In the VoIP world, it can monitor and measure SIP, H323, Megaco, MGCP, T.38 and video calls. In the Wireless network, it can monitor 2G, 3G, and 4G protocols such as GSM, UMTS, GPRS, LTE, SIGTRAN signaling over IP. A number of GL’s PacketScan™ probes are deployed in remote locations across the network to passively monitor VoIP traffic.
- PC based T1 E1 / T3 E3 / Optical probes collect physical and line level status and performance information. The Intrusive and Non-intrusive "probes" for TDM networks are deployed at strategic locations in a network. They can transmit and collect voice, data, protocol, statistics, and performance information. These probes can relay information to a central / distributed Network Management System (NMS).
- Database Loader (Data Layer) – A listener application is co-hosted with the database server (SQL DBMS such as Oracle) running on the Data Layer. Interface between the probes and the database is handled by "Listener". The Listener will listen to the streaming data from connected probes, receives data, and feeds the data to DB server. Multiple probes can be connected via TCP to the Database Loader.
- Provides load statistics and probe layer 2 status
- Central control over probes to suspend or resume loading data to DB from connected probes
- DB stores the data collected by the probes. Records are stored into a relational database (Oracle) using ODBC connection.
- Listener is modifiable and supportable with MySQL.
- NetSurveyorWeb™ Webserver (Data Access Layer) serves for data mining operations. The database could be accessed in real-time over the web using applications such as GL’s NetSurveyorWeb™, or queried by customer applications such as a billing system or accessed by a reporting tool such as Crystal Reports, for aggregation and analysis of historic data. The NetSurveyorWeb™ is a user-friendly web-based client which accesses the results provided by the centralized DB through a web server. As depicted in the screenshot below, users can log into the central system locally or remotely to view the collected real-time and historic data including call parameters, layer 1 status display, as well as layer 2 and 3 analysis. Also available is the ability to filter the call records using a variety of filtering mechanisms including time/date, signaling and traffic parameters.
Voice Quality Analysis (VQT)
In VQT, both the reference and the degraded captures are analyzed by comparing the voice samples using the POLQA (ITU-T P.863), PESQ (ITU-T P.862) algorithms. Various voice quality metrics including MOS, E-Model, SNR, Signal Level, Noise Level, Clipping, Delay, and Jitter and provided.
As per the figure above, the reference & degraded voice captures of 8 sec duration are created in each direction of data flow i.e., IP to TDM or TDM to IP and are sent to VQT for processing. GL's Voice Quality Testing (VQT) software supports the next-generation voice quality testing standard for fixed, mobile and IP-based networks using POLQA (ITU-T P.863), PESQ (ITU-T P.862), and analytical results such as MOS, E-Model, Signal Level, SNR, jitter, clipping, noise level, and delay (end to end as well as per speech utterance) are generated for each call direction.
For more information, refer to Voice Quality Testing.
Voice Quality Analysis using VQT
Voice Band Analyzer (VBA)
NetSurveyorWeb™ Lite application works with Voice Band Analyzer (VBA) application to analyze monitoring voice band traffic over variety of networks including VoIP, TDM, 2-Wire and Wireless and provide useful metrics that are of interest to service providers.
The VBA built-in algorithms include ITU-T P.56 Active Voice Level analysis, Line Echo (Hybrid) analysis, and licensed modules include 2-Wire Echo Analysis, Traffic Classifier and Fax analysis. Other analysis modules such as ITU-T P.561, P.562, and P.563 can also be hosted as plug-ins.
The VBA application operates on previously captured files, making it a near-real time (as opposed to a strictly real-time) tool. It supports A-Law, μ-Law, 16-bit PCM (Intel), 16-bit PCM (Motorola), MS Wave, G.726 (40 Kbps, 32 Kbps, 24 Kbps, and 16 Kbps), and G.722 (64 Kbps) file formats.
- Speech Metrics measured in accordance with ITU-T P.56 Method B
- Active Speech Level (ASL in dBm)
- noise level (NL in dBm)
- speech activity factor (AF in %)
- power measurements (RMS, dRMS in dBm, DC Level in %FS)
- clipped samples
- DC level
- detail voice band events occurrence during the call including reporting of traffic as tones (ring, busy), digits (DTMF, MF, MFC-R2), fax tones, modem signals, and more
- Hybrid Echo analysis module for Line Echo measurement. It outputs
- Echo Return Loss - ERL (dB)
- Echo Delay (ms)
- Echo Dispersion (ms)
- Traffic Classifier to detect, classify, and display the amount of traffic - whether its Fax, Voice, Digits , Tones, or Silence present in the network
- FaxScan™ used to analyze voice band traffic files for Fax traffic on 2-wire or 4-wire captures. It outputs fax signaling frames in a log file and Fax image in TIF format
- Tone Decoder can detect and decode the following different types of phone tones -
- DTMF, MF
- Caller ID, Caller ID - Call Waiting
- Paging Tones
- Teletype (TTY)
- Frequency-Shift Keying (FSK)
- Specific Area Message encoding (SAME)
- Visual Message Waiting Indication (VMWI)
- Special Information Tone (SIT)
- Silence, ring-back, busy tones or any Custom Tones from the PCM wave file / wave streams
Voice Band Summary
VBA Call Graph and Voice Band Events
The Speech Level module with VBA analyzes the captured voice files and produces the following statistics according to ITU Standard P.56. These measurements help detect call anomalies and detect impairments in voice channels in near real-time and thereby quickly remove or rectify the impairing channel from the live network.
The Traffic Classifier module with VBA analyzes the captured files and categorizes the call as voice, fax, and modem data. It outputs the amount of Fax, Voice, Digits, Tones, Silent and Idle traffic present in the network and provides statistics. Traffic Classifier allows Idle Code settings for signaling bits and options to detect DTMF, MF, MFR2-fwd, MFR2-bkwd digits, and Tones (Dial/Ring/Busy).
The Fax Traffic module with VBA process WinPCAP, 2-Wire and 4-Wire voice band capture files to analyze the T.38 packets, T.30 frames. It provides detail decode of a Fax call with TIFF image, and call-flow indicators for complete analysis of fax call. The 2-wire captures are indicated by a single input file, which is presumed to contain the traffic in both directions, as might be captured from a subscriber line. The 4-wire traffic is captured with two input file one containing “east bound” traffic and the other containing “westbound” traffic.
The 2-Wire Line Echo Analysis module with VBA can measure hybrid line echo generated using the captured files at both end points, and generate Echo Return Loss (ERL), Echo Delay, and Echo Dispersion measurement values.
The Tone Decoder module within VBA features a highly efficient FFT module, which can convert a raw captured file to spectrum data. With this module, the VBA can monitor the signal arriving at the receive end, detects, and decodes the tone type as DTMF, MF, Frequency-Shift Keying (FSK), Teletype (TTY), Special Information Tone (SIT), Specific Area Message Encoding (SAME), Voice Mail Waiting Indication (VMWI), Paging Tones, or any Custom Tones from the captured PCM wave file or wave stream. The module also detects and decodes the Type 1 Caller ID, Type 2 Caller ID - Call Waiting (CID-CW), silence, ring-back, busy or other phone tones.
Delay Measurement (OWD)
NetSurveyorWeb™ Lite also works with Delay Measurement tools to analyze captured voice traffic and provide precise one-way delay metrics. For a given call which traverse through Gateway, traffic is sampled at both TDM and IP analyzer at the same point of time running in the same server. These captured segments of SIP and ISDN calls will be saved in *.pcm formats. These samples will be given to delay measurement module which compares the samples based on the timestamp and provides the delay metrics.
Delay KPI
Average Delay In and Out
The below KPI shows average delay for In and Out direction. It is categorized as <51 sec, between 51-100 Msec, between 101-150 Msec, and greater than 150 Msec.
Main Features
Web Based UI |
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Call Detail Records |
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Filter & Search Calls of Interest |
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Key Performance Indicators (KPI’s) |
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| Physical Layer Monitoring |
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Alerts and Indicators |
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KPI and Reports
| Protocol Type | Supported KPI | Screenshots |
|---|---|---|
VoIP SIP (SIP and H.323) |
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SIP KPIs |
SS7 |
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 SS7 KPIs |
T1 E1 Layer 1 |
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T1 E1 KPIs |
ISDN |
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 ISDN KPIs |
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 LTE KPIs |
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GSM |
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GSM A |
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TRAU |
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IuCS |
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IuPS |
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VoIP SIGTRAN |
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Functions
Call Data Records (CDR) View
The real-time data view provides visibility into each individual call. Each call can be investigated based on call control, signaling and traffic parameters. Flexible filtering can help organize and identify “Calls of Interest”. The CDR view includes the following.
Frame Summary
Frame summary view provides summary of signaling data along with the decodes in the form of Hexdump.
Traffic Summary
This option is currently available only for IP calls. Each call can be expanded to reveal per stream RTP statistics. The RTP/audio parameters such as SSRC number, payload type, total packet count, missing / duplicate / reordered / discarded packet count or %, conversational/R-Factor , listening MOS/R-Factor, cumulative packet loss, Max/Min/Average values of Gap, Min/Max/Average values of jitter, Min/Max/Average values of RTD, and average inter arrival jitter are displayed.
Graph View for each call
This call flow graph allows easy verification of the messages exchanged and the status of the call.
Users can also select any messages and observe the corresponding decode message details in the decode view.
Merge View
This feature display Call Data View, Ladder diagram, and Decode message detail of the selected message in a single view.
Also, CDR view provides flexible options to hide the Detail View, Graph View, or Decode View as required in order to view the information properly.
Navigation and Search Tools
Navigate through records easily using Previous and Next Hour, Day, Month, and Year options as required. A particular call of interest can be searched using the Quick Search option.
Whitelist
User can configure the list of interested calling/called number to mark them as Whitelist and perform the action such as saving the trace file on the probe. This information is sent to the database and can view the Whitelisted calls separately in the NetSurveyorWeb™ and also download the trace file in *.hdl format.
Export PDF
Provides an ability to export current call data records view in PDF as well as CSV file formats. In addition, call data records along with the associated call-flows can also be exported in PDF formats.
Filter CDR
The call records can be filtered using Date/Time Filter criteria or by defining custom filter profiles. The Date/Time filter displays the call records based on Minutes, Hours, Days, and user-defined date range. The Display All option displays all the available call records. The Custom Filters provide options to filter call records based on various call control, signaling and traffic parameters.
Custom filter profiles can be saved and loaded with the click of a button. Single or Multiple Custom filters can be applied to perform deep inspection. Edit & update already existing custom filter profiles. Also provides logical operations to apply between parameters within a filter or multiple filters.
Call Flow
The call flow provides visibility into each individual call. The call flow is depicted through graphical and tabular view which allows verification of the status and the messages exchanged in a call between the Called and the Calling numbers.
SIP Call Flow
Selected Call Trace Download
The user can download the selected call trace in the *.hdl format.
Download the Selected Call Trace
Alarm Settings
Trigger alarms and alerts whenever calls-of-interest occur, a network link failure is detected, or regularly at scheduled intervals. Directly access the pre-configured filter profiles or the KPI profiles to trigger alarms and alerts either when the custom filters conditions are passed, or send the pre-defined KPI report hourly, daily, monthly or yearly. Alert actions can be defined based on the output of the alarm conditions such as like email alert, visual alert, audible alert, SMS alerts, exporting data, setting alarm severity, or even log into tables for future analysis. Alarm Severity type can be set as Minor, Major, or Critical.
Flexible options are provided to save alarm filters as profiles, add, edit or delete the existing alarms, selection of user KPIs, and selection of Custom filters. Schedule alarms and alerts for hourly, daily, monthly, or yearly.
Email / SMS Alerts: Sends Email alerts for alarms. When the alarm condition set by the user is true then the data will be sent as an Email attachment in the PDF format for the given Email address. In case of SMS, a simple text message will be sent to the registered mobile.
Audible Alerts action will beep once for the particular time.
Graphs & Reports
Report provides an overall summary of the captured traffic over the entire network with the help of useful graphs. Such as Link Message Counters, Call Completion, Disposition Count, Billing Duration, and Message Counters
Reports are also available in the form of Bar Graph, Pie Chart, Dot Graph, or tabular format for each of the plotted graph.
Report Configuration
NetSurveyorWeb™ allows users to add new KPIs and customize the reports using Report Configuration feature. Generates customized reports and graphs based on SQL Queries.
Add / Import KPIS
This feature allows user to Add / Import the required KPI to the existing KPI group. This will avoid the user from creating the new KPI as it is readily available. Also, the add option will update the added KPI whenever the user who created this KPI does any modification. The import option will give full permission to the user to edit the KPI as required.
Resources
Please Note: The XX in the Item No. refers to the hardware platform, listed at the bottom of the Buyer's Guide, which the software will be running on. Therefore, XX can either be ETA or EEA (Octal/Quad Boards), PTA or PEA (tProbe Units), XUT or XUE (Dual PCIe Express) depending upon the hardware.
| Item No. | Item Description |
| PKV169 | NetsurveyorWeb™ Lite – Probe Level WebServer, PacketScan™, and Oracle 11g Express Edition; |
| PKV170 | NetsurveyorWeb™ (Perpetual License, Unlimited Users/Nodes) – Includes Oracle 11g Standard Edition One and Standard Server-Grade Computing Platform |
| Options with NetSurveyorWeb™ (PKV170) | |
|---|---|
| PKV172 | ISDN Call Detail Record (CDR) Option for Network Surveillance - requires PKV170 |
| PKV175 | T1 E1 Physical Line Monitoring Option for Network Surveillance - requires PKV170 |
| PKV173 | SS7/SIGTRAN Call Detail Record (CDR) Option for Network Surveillance - requires OLV120 or PKV106 at the central site |
| PKV174 | GSM (TDM or IP) & TRAU Call Detail Record (CDR) Option for Network Surveillance - requires OLV150 and OLV153 at the central site. |
| PKV176 | VoIP (SIP, MGCP, Megaco etc.) Call Detail Record (CDR) Option for Network Surveillance - requires PKV101 at the central site |
| Related Software | |
| XX100 | Real-Time ISDN Protocol Analyzer |
| OLV100 | Offline / Remote ISDN Analyzer |
| XX120 | SS7 Analyzer Software |
| OLV120 | Offline / Remote SS7 Analyzer - requires PKV170 |
| XX150 | T1 or E1 Real-time GSM Protocol Analyzer |
| OLV150 | Offline / Remote GSM Analyzer - requires PKV170 |
| XX153 | T1 E1 Real-time TRAU Protocol Analyzer TRAU Traffic Playback TRAU Toolbox™ |
| OLV153 | Offline / Remote TRAU Analyzer - requires PKV170 |
| PKV100 | PacketScan™ - (Online and Offline) |
| PKV101 | Offline / Remote PacketScan Analyzer - requires PKV170 |
| PKV106 | Offline / Remote SIGTRAN Analyzer - requires PKV170 |
| PKV171 | Network Surveillance Agent Toolkit |
| XX092 | CAS (Channel Associated Signaling) Analyzer |
| XX100 | T1 or E1 Real-Time ISDN Protocol Analyzer |
| XX110 | E1 Real-Time V5.x Protocol Analyzer |
| XX120 | T1 or E1 Real-Time SS7 Protocol Analyzer |
| Related Hardware | |
| FTE001 ETE001 |
QuadXpress T1 E1 Main Board (Quad Port– requires additional licenses) OctalXpress T1 E1 Main Board plus Daughter Board (Octal Port– requires additional licenses) |
| PTE001 | tProbe™ Dual T1 E1 Laptop Analyzer with Basic Analyzer Software |
| XTE001 |
Dual T1 E1 Express (PCIe) Boards (requires additional licenses) |
| TTE001 | tScan16™ T1 E1 Boards |
