Packet Data Analysis (Traffic Analysis Tool for IP)

Overview

Packet Data Analyzer (PDA) is a real-time IP and VoIP analysis tool in MLPPP Analyzer that non-intrusively captures and monitors live IP, VoIP, and IP based Video traffic.

Segregates, captures, and collects statistics on VoIP calls (SIP / H323 / Megaco / MGCP / T.38 Fax).
provides graphical presentation of analysis, including ladder diagrams of protocols
monitors QoS (quality of service) on voice and video calls

Its real-time nature makes it an outstanding tool for live monitoring of VoIP traffic as well as long-term traffic statistics gathering. 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.

		User's Guide
		Analyzer Brochure
		View Presentation

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 (adherence to the protocols specified by the standardizing authority) of the system under test.

Packet Data Analyzer supports the following three views:

Summary View (Call Quality Matrix) displays complete summary of SIP/ H323 /MEGACO / RTP/ 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.

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

Main Features

Supported protocols - SIP (Session Initiation Protocol RFC 2543 and RFC 3261), Megaco RFC 3525, Megaco RFC 3015, MGCP, H323/H225, and RTP.
Full RTP Analysis with audio capture/playback supported for all common codecs.
Support video QoS for H.263+ and H.264 video codec; H.263 provides video capture and video conference monitoring capability, while H264 is an industry standard codec for video compression, the codec offers better compression performance over previous standards
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).
Supports saving the selected calls from traffic analyzer into *.HDL or *.PCAP formats.
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.
Triggered Actions and E-mail Support.
Its ability to monitor / record audio and video data of a session to files (in QuickTime *.qt format), allows user to perform powerful video analysis.
R factors/MOS supported for more audio and video codecs:
- G.711 (µ-law and A-Law - 64 Kbps)
- G.711 App II (A-law and µ-law with Voice Activity Detection).
- G.726 (40/32/24/16 kbps)
- GSM (13.2kbps)
- G729 (8kbps)
- G729B (8kbps)
- G.722
- G.722.1 (24 kbps and 32 kbps Wideband)
- AMR (Wideband codec - 6.60kbps, 8.85kbps, 12.65kbps, 14.25kbps, 15.85kbps, 18.25kbps, 19.85kbps, 23.05kbps, 23.85 kbps)
- AMR (Narrow band codec - 4.75kbps, 5.15kbps, 5.9kbps, 6.7kbps, 7.4kbps, 7.95kbps, 10.2kbps, 12.2 kbps). This is an optional codec, must be purchased as a separate dongle extension).
- ILBC (15.2kbps and 13.33kbps)
- SPEEX (Wideband)
- SPEEX (Narrowband)
- ISAC (An optional Codec, must be purchased as a separate dongle extension)
- EVRC, EVRC0 (Rates - 1/8, ½ and 1). This is an optional codec, must be purchased as a separate dongle extension)
- EVRCB, EVRCB0 (Rates – 1/8, ½ and 1). This is an optional codec, must be purchased as a separate dongle extension)
- EVRC-C (This is an optional codec, must be purchased as a separate dongle extension)
- SMV (Modes - 0, 1, 2 and 3 - Available if licenses are provided or owned, please call GL)
- H.263+ providing video capture and videoconference monitoring capability.
- H.264 is an industry standard for video compression, the codec offers better compression performance over previous standards
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.
Alert Summary tab provides summary of the each alerts that have occurred during the analysis.
Support for H.263+ provides video capture and videoconference monitoring capability.
Provides graphical presentation of analysis, including ladder diagrams of protocols.
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).

Graphs:

Includes host of graphs such as Active calls, Ladder diagram for T.38 traffic, and call signaling, Gap, Jitter, Gap/Jitter Distribution, Wave and Spectral Display for media stream analysis, etc.

Call Summary – Signaling Audio and Video QoS Parameters

Call Summary display signaling audio and Video QoS parameters for each SIP/MEGACO/RTP/H.323 calls. The signaling parameters includes information about caller, callee, call id, call status, call start time, stop time, duration of the call, call terminator, call failure reason, session request delay, and session disconnect delay. The audio parameters include the source and destination information displayed in the summary pane in a tabular format. These include TP Channel, Media Type, SSRC value, Packets Count, Missing Packets, Duplicate Packets, Out of Sequence Packets, and more.

Video QoS parameters such as Video Channels, Codec Info, SSRC, Frame Count, Packet Count, Packets Lost, Duplicate Packets, Out of order Packets, Frame Rate, Media Delivery Index (Delay Factor : Media Loss Rate), Average Media Delivery Index are calculated for all video calls. PacketScan™ with Video QoS capability addresses customers long felt need of Video Call Quality in IP networks

Screenshot of Call Summary – Signaling Audio and Video Parameters

Detail View

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

E-Model based Parameters and Additional settings

Users can set E-Model based MOS and R-Factor parameters, VQmon settings, & Dynamic Payload Mapping.

R-Factor Statistics

This displays the R-Factor statistics for the selected RTP session, which includes quality metrics, burst metrics, delay metrics, degradation factor, and jitter buffer statistics.

Triggers and Action Settings

Supports filtering calls based on certain SIP, RTP, Megaco, and H323 parameters followed by a set of actions for the completed calls. The actions include saving call to a file, recording audio to a file, sending an email, generating an alert summary, and viewing custom calls in summary view. It allows users to specify the formats and the type of calls to be saved as *.hdl, or *.pcap, and/or *.wav format.

Screenshot of Triggers and Action Settings

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.

Screenshot of Alert Summary View

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.

Screenshot of Save Call

Analysis of T.38 fax calls

Packet Data Analyzer is capable of capturing and decoding of Fax (T.38 data) calls over VoIP. 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 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 ladder diagram.

Screenshot of T.38 Analysis over IP

Real-Time Digit Capturing

PDA allows 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.

Screen Shot of Real-Time Digit Capturing Window

RTP (Audio) Listen and Record Applications (Play To Speaker & Write To File)

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.

Screen Shot of Play Jitter Options

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)

Screen Shot of Write to File

Record Video

This feature allows the user to record audio and video data of a session to a file in QuickTime format. MLPPP Analyzer can monitor video calls and display both audio and video RTP streams in summary view. Video calls will be marked with symbol "V" at the left corner as shown in the figure below. The recorded video data in Quick Time Format (*.qt) can be viewed by VLC Viewer (3rd party application).

MLPPP Analyzer may be installed in either of the system to record the video data as depicted in the image below.

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+
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 videoconferencing.

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 an industry standard for video compression, the codec offers better compression performance over previous standards.

Registration Summary

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, TTL, expiry time, remaining time, and Registration Request Delay (RRD) and so on 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.

Screenshot of Registration Summary

Include graphs that display the active registration and registration trace message sequences of registered calls at the bottom of the registration summary.

Buyer's Guide:

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 HDT, HDE, HUT, HUE, UTA or UEA depending upon the hardware.

Item No.	Item Description
XX136	PPP and MLPPP Packet Analysis – Real-time Packet Voice, Video, and Fax Analysis
XX135	T1 or E1 MLPPP Analyzer
OLV135	Offline T1 or E1 MLPPP Analyzer
	Related Software
XX020	Record/Playback File Application
XX600	Basic Windows Client/Server Scripted Control Software
XX634	Multi-Channel HDLC Emulation and Analysis & File based High Throughput HDLC Record/Playback
XX635	PPP Emulation and Analysis
XX636	MC-MLPPP Emulation and Analysis
XX640	File based HDLC Record/Playback
	Related Hardware
PTE001	tProbe™ Dual T1 E1 Laptop Analyzer with Basic Analyzer Software
HDT001/HDE001	Legacy HD T1 or E1 (PCI) Cards with Basic Analyzer Software
HTE001	Universal T1/E1 Card with Basic Analyzer Software
UTE001	Portable USB based Dual T1 or E1 Laptop Analyzer with Basic Analyzer Software

* Specifications and features subject to change without notice.

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