(Traffic Analysis Tool for Packet over IP)
Packet Data Analysis (PDA) is an outstanding tool for live monitoring of signaling and traffic over IP. Packet Data Analysis (PDA) is distributed with GL’s Packet Analyzers, allowing users to monitor live IP networks including capture, analysis, and reporting of every call in detail. Supported protocols include SIP, MEGACO, MGCP, H.323, SCCP, RANAP (UMTS IuCS), and GSM A.
GL’s Packet Analyzers can capture IP packets over different transmission lines, including IP, T1, E1, T3, E3, and OC-3 STM-1 / OC-12 STM-4. PDA then processes the captured packets, identifies, and segregates calls based on signaling and traffic parameters.
Packet Data Analyzer (PDA) is a real-time IP and VoIP analysis tool in PacketScan™ and MLPPP Analyzer (T1 E1, T3 E3, OC-3 STM-1 / OC-12 STM-4) that non-intrusively captures and monitors live IP, VoIP, and IP based Video traffic.
- Segregates, captures, and collects statistics on VoIP calls.
- Provides graphical presentation of analysis, including ladder diagrams of protocols
- Monitors QoS (quality of service) on voice and video calls
PDA is an outstanding tool for live monitoring of VoIP traffic. It can also monitor, report, analyze, and capture calls for infinite time, limited only by the finite space of your hard disk or network hard drive.
Detailed call statistics such as packet loss, gap, jitter, delay, RTP performance statistics, R-factor & MOS scores, and unparalleled voice band statistics can be monitored simultaneously. Sophisticated filters permit zooming and recording of specific calls of interest. All or filtered traffic can be recorded into a trace file.
Users can listen/record audio and video data of a session VoIP calls in real-time; perform power, frequency, spectral, tone and digit analysis, and video analysis with ease and precision; get an exact picture of QOS (quality of the service) and the technical adherence of the system under test (adherence to the protocols specified by the standardizing authority).
Packet Data Analyzer supports the following three views:
- Summary View (Call Quality Matrix) displays complete summary of VoIP call information in graphical format along with a summary of alerts.
- Detail View (RTP Diagnostic View) displays packet by packet statistics for particular call information in tabular format. This allows the user to have a detail look at the two (or one) RTP sessions that are part of a single call. This distinction assists in any comparisons that are to be made between the two sessions. Here each frame of the selected session is dissected and its contents are displayed in a tabular form for easier viewing and comparisons. Vital aspects from the RTP frame needed for close analysis are included provides in tabular and graphical formats. A host of counters gives the user an instantaneous snapshot of the VoIP traffic on the network
These interfaces allow users to define parameters such as E-Model based MOS and R-Factor score, VQmon settings, & Dynamic Payload Mapping. It also supports real-time digit capturing like DTMF, MF and user-defined digits/tones.
- Registration Summary View displays statistics and status of the SIP registration process, an active registration graph, and registration trace graph of each SIP registration.
Screen Shot of MLPPP PDA
|Packet Data Analysis
- RTP packet statistics for each direction of a call
- Full RTP Analysis with audio capture/playback supported for all common codecs.
- A host of counters gives the user an instantaneous snapshot of the VoIP traffic on the network
- Pictorial representation of the statistics including ladder diagrams for the calls of various protocols.
- Ability to export complete or selected call summary report of PDA in PDF file format
- Ability to export and analyze call detail records of completed calls using advanced ExcelŽ addin.
- These reports can be further analyzed using custom ExcelŽ addin.
- Signaling, audio, and video QoS parameters for each VoIP call
- T.38 Analysis - The application has the call graph and T.38 ladder diagram display. User can decode T.38 frames received over VoIP calls and can have ladder diagram for T.38 traffic flow, reassemble the fragmented data and to identify the T.30 message from it.
- Displays summary of signaling, audio, and video parameters such as Source/Destination Video Channels, Media Type, SSRC, Average Delay/Gap, Packet Counts, Media Delivery Index (MDI- (Delay Factor : Media Loss Rate)), and Frame Rate are calculated and displayed for all video calls.
- Minimum, maximum, and average Round Trip Delay (RTD)
- Inband (DTMF & MF) events, RFC 2833 events, RTP/RTCP packet count and reports per direction
- E-model (G.107) based MOS/R-Factor scores
- Media Delivery Index (Delay Factor: Media Loss Rate) for video calls
- H.263, H.264 codec support
- Jitter, Delay, and Gap for Audio and Video traffic
|Triggers and Actions
- Filter captures based on protocol parameters followed by a set of actions for the completed calls.
|Traffic (Digits, Audio, Video, Fax) Handling
- Segregation of IP traffic, VoIP, and Fax calls
- Extracts fax images in TIFF format for Fax calls
- Audio capture/playback - Listen and Record RTP (Audio) streams
- Record Video and Video QoS Statistics
|SIP Registration Details
- Registration statistics and trace messages depicted graphically.
- Provides the registration summary of each SIP registration including the user agent, registrar, status, registered time, expiry time, time to live, remaining time, and Registration Request Delay (RRD).
- R factors/MOS supported for more audio and video codecs.
For more details visit Supported Codecs
- Supports saving the selected calls from traffic analyzer into *.HDL or *.PCAP formats.
Graphs are provided in The PDA Summary and Detail Views for key values to give a pictorial representation of the statistics, thereby allowing the user to monitor the network with ease; some of the graphs available are – Active Calls, Average Jitter, E-Model MOS/R-Factor/Packets Discarded, RTP Packets Summary, ladder diagram for T.38 based fax calls and call signaling, Gap, Jitter, Gap/Jitter Distribution, Wave and Spectral Display for media stream analysis, VoIP calls, and more.
CDR Report Generation
PacketScan™ provides the ability to generate PDA summary report of selected or all calls as PDF file.
The PDA Summary View can also export all terminated call details as a text file (csv format) during the live capture. This feature requires activating the Export Terminated Calls option from PDA prior to live capturing. This structured text file can be imported easily into Excel® using the custom addin (Excel-Dashboard-Tool-IP.xlsm) to generate different chart types, such as call volumes, call duration, call failure causes, CMOS, LMOS, packet loss, and more.
For more details, refer CDR Analysis Tools webpage.
The PDA also provides the ability to export PDA summary and detail reports of selected or all calls in PDF file format.
- Call Summary displays signaling, audio, and video QoS parameters for each call.
Signaling parameters include Caller & Callee id information, call duration, session information (Establishment Ratio, Establishment Effective Ratio, Session
Defects, Ineffective Session Attempts, Completion Ratio, Request delay, Disconnect delay), and so on.
Audio parameters include media type, packet count, jitter, delay, gap, MOS, R-factor, lost packets, and so on.
Video QoSparameters such as Video Channels, Codec Info, SSRC, Frame Count, Packet Count, Packets Lost, Frame Rate, Media Delivery Index
(Delay Factor : Media Loss Rate), Average Media Delivery Index are calculated for all video calls.
- Detailed statistical information are provided for Inband (DTMF & MF )events, RFC 2833 events, RTP/RTCP packet count and reports per direction,
Duplicate and Missing Packets
- Calculates minimum, maximum, and average Round Trip Delay (RTD) values for SIP calls
- Call Quality Of Service (QoS) for all calls with E-Model based (G.107) Mean Opinion Score (MOS) and R-factor with individual and summary statistics
presented in graphical and tabular formats
- User can get real-time call trace for SIP Sessions and on H225 calls
- Users can set E-Model based MOS and R-Factor parameters, VQMon settings, & Dynamic Payload Mapping.
- The R-Factor and MOS are calculated in summary and detail views depending upon the Jitter Buffer Emulator parameters set in VQMon settings.
- PacketScan™ supports VQMon Standard and VQMon ‘Linear’ or ‘Non Linear’ CME model to calculate Quality metrics.
Triggers and Action Feature
- Supports triggers and action feature to further filter calls based on certain protocol parameters followed by a set of actions for the completed calls. Some of such parameters are MOS, R-factor, jitter, packet loss, duplicate packets, or called / calling numbers.
- The actions include saving a call to a file, recording the audio to a file, sending an email, generating an alert summary, creating Call Detail Records, viewing custom calls in summary view, and extracting fax images from the captured calls in TIFF format.
- Users can specify the file formats of calls as *.hdl, or *.pcap, and/or *.wav format. Call Detail Record outputs 3 CSV files, call master record, call side record, and call events record, along with the voice file recordings for each direction. These files can be used with GL's Voice Band Analyzer, and Call Data Records for further analysis and retrieval of calls of interest
- Alert Summary - Generates alerts when particular vital parameters go beyond a specified value. The Alert Summary provides an active list of the alerts that
have occurred during the test session.
Traffic Handling Features (Fax, Digits)
- T.38 fax calls
PacketScan™ software supports capturing and decoding of Fax (T.38 data) calls over VoIP. PacketScan™ fax decodes can be
viewed in the form of T.38 call graph and call summary with decoded information for all T.38 messages received on the call. The captured fax calls by PacketScan™ can also be analyzed using GLInsight™ by saving the fax calls directly in (*.PCAP) Ethereal file
format. T.38 has been enhanced to reassemble the fragmented data and to identify the T.30 message from it. Identified T.30 message is displayed in the T.38
PacketScan™ also allows users to extract fax image in the TIFF format from the selected fax call in either GL's proprietary *.HDL file format or in Ethereal *.PCAP file format.
- Real-Time Digit Capturing
PacketScan™ provides a means for digit examination and capturing. An easy-to-read window
indicates the direction of the captured digits along with the duration, power and frequencies. DTMF, MF and User-defined
digits/tones are fully supported.
Audio Handling Features
- Play to Speaker
Play To Speaker application allows the user to play the RTP streams of a call to the PC speaker using a soundcard. A host of options such as Jitter Buffer
settings, As Is, Audio Mixing and so on are available for users to play a live call in real-time or play captured voice files.
- Write To File
Similar to Play to Speaker application, various options are provided for the user to save the captured file in a required format, and use the files with voice
quality analysis software to investigate more about the quality of voice in the network. This application write or records the RTP stream to a file in *.wav
format. (Examine both directions using Waveform Viewer)
- Save Call
Supports Save Call feature to save a particular call either in GL’s proprietary *.HDL file format or in Ethereal *.PCAP file format. Call Summary
details could also be saved for a particular call and this will be saved as a *.rtf file. This allows the users to get data from real-time traffic locations for detailed
analysis of a flawed call.
Acts as a Probe in Network Monitoring System
GL's Network Monitoring System uses probes with PDA to prepare and send detail packet statistics, call quality measurements, and Call Data Records (CDRs) to a centralized database. Later these records can be viewed remotely using a web client with graphical and historical reports. For more details, click Packet Monitoring and Surveillance System.
Record Video and Video QoS
Real-time audio/video monitoring of RTP streams using Audio Playback, Record Video, and Write to File features.
This feature allows the user to record audio and video data of a session to a file in QuickTime (*.qt) format. PacketScan™ can
monitor video calls and display both audio and video RTP streams in summary view. The recorded video data in Quick Time Format (*.qt) can be viewed by
VLC Viewer (3rd party application).
Record video option is available for both Auto Detected RTP Calls and SIP Calls. Supported Video Codecs are:
- H263++ CIF 190 kbps
- H263++ CIF 350 kbps
- H263++ CIF 512 kbps
- H263++ QCIF 128 kbps
- H263++ QCIF 64 kbps
- H263++ QCIF 80 kbps.
*Note that Video recording is supported only for H263+ codec. However, video QoS statistics is available for all codecs.
H.263 is a video codec designed by the ITU-T as a low-bitrate encoding solution for video capture and videoconferencing. H.263 provides video capture
and video conference monitoring capability, while H264 is an industry standard codec for video compression.
QCIF - Quarter Common Intermediate Format, a videoconferencing format that specifies data rates of 30 frames per second (fps), with each frame
containing 144 lines and 176 pixels per line.
CIF - A video format used in videoconferencing systems that specifies a data rate of 30 frames per second (fps), with each frame containing 288 lines
and 352 pixels per line.
H.264 is the latest video coding standard of the ITU-T Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG). H.264
is an industry standard for video compression, the codec offers better compression performance over previous standards.
It has demonstrated the significantly improved coding efficiency, lower compressed bit rate for the same image quality, substantially enhanced error
robustness, and increased flexibility and scope of applicability relative to its predecessors;
Wide application of H.264 includes;
- Mobile TV broadcasting
- Internet video
- Video conferencing
Support Video QoS for H.263+ and H.264 video codec; Video Statistics such as Source/Destination Video Channels, Media Type, SSRC, Average
Delay/Gap, Packet Counts, Codec Type, Missing Packets, Delay, Gap, Video Frame Count, Out Of Sequence count, Duplicate Packets count, Media Delivery Index
(MDI- (Delay Factor : Media Loss Rate)), and Frame Rate are provided for each video session. PacketScan™ with Video QoS capability addresses
customers long felt need of Video Call Quality in IP networks.
Media Delivery Index (MDI) measurement is used as a diagnostic tool or as a quality indicator for monitoring a network intended to deliver applications such
as streaming media, MPEG video, Voice over IP, or other information sensitive to arrival time and packet loss. Media Delivery Index (MDI) can be used to monitor
both the quality of a delivered video stream and to show system margin for IPTV systems by giving an accurate measurement of jitter and delay at network
level (Internet Protocol, IP), which are the real causes for quality loss. The Media Delivery Index is typically shown as two numbers separated by a colon the
Delay Factor (DF) and the Media Loss Rate (MLR).
Packet Data Analysis is enhanced to display the SIP registration information in tabular as well as graphical format in Registration Summary. This interface
displays the SIP registration information in a tabular format which includes user agent, registrar, registered time, status, time to live (TTL), expiry time, remaining
time, Registration Request Delay (RRD) and Registration attempts for each user agent. In addition, it displays the active registration graph of the entire
registration summary and provides the trace display of each registration.
Include graphs that display the active registration and registration trace message sequences of registered calls at the bottom of the registration summary.
The registration statistics display the count of the total, completed, failed, & active registrations along with registration and de-registration packet count.
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),
UTA or UEA (USB Units), HUT or HUE (Universal Cards), and HDT or HDE (HD cards) depending upon the hardware.
* Specifications and features subject to change without notice.
Back to PacketScan™