IP/VoIP Analysis & Simulation

Protocol Analyzer

PacketScan™ HD - Network Monitoring Appliance

Capture and analyze high speed Ethernet traffic over
1 Gbps, 10 Gbps, 40 Gbps and 100 Gbps networks.

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PacketScan HD - Network Monitoring


PacketScan™ HD is a high density Ethernet monitoring appliance with specialized network interface cards, large storage capacity and protocol analysis software. Customers can choose the specific Ethernet data rate for the network interface cards including 4 x 1 GigE (PKV120), 2 x 10 GigE (PKV122), 2 x 40 GigE (PKV123) and 2 x 40 / 2 x 100 GigE (PKV124) variations. Almost all VoIP and Wireless protocols over IP transport layer can be captured and decoded for troubleshooting network problems.

PacketScan™ HD includes the PacketScan™ software which can provide in-depth real-time and post-process data investigation with its Packet Data Analysis (PDA) feature. The PDA view assists in comparing multiple RTP sessions. The PDA view displays call information in graphical format and tabular format.

PDA feature is available for SIP, H323, MEGACO, MGCP, GSMA, Skinny, and IuCS based calls. PacketScan™ HD can work with NetSurveyorWeb™, a central monitoring system for a comprehensive view of network performance. It features rich graphics, ladder diagrams and CDRs (Call Detail Records).  A web server is deployed in a central location along with an Oracle® database. Multiple PacketScan™ HD probes can be deployed in remote locations across the network to passively monitor VoIP traffic and send data to NetSurveyorWeb™.

GL's FastRecorder™ and PacketExtractor™ applications can capture and record packets on 1, 10, 25, 40, and 100 Gbps networks at wirespeed. The traffic is recorded from the FastRecorder™ application and extracted by the PacketExtractor™ which is then analyzed using PacketScan™ HD. The PacketScan™ HD can contain several terabytes of storage as requested by the customer. The PacketScan™ HD application supports decoding of eCPRI protocol. It also supports eCPRI protocol analysis tool which enables analysis and statistics of eCPRI message types such as IQ Data, Bit Sequence, Generic Data Transfer, Remote Memory Access, One-way Delay Measurement, Remote Reset, and Event Indication.

GL's IP Analytics™ tool along with FastRecorder™ and PacketExtractor™ application ensure Quality of Service (QoS) by analyzing IP-based data streams to meet performance standards. GL's IP Analytics™ offers detailed statistics for various parameters such as Layer 3, COS, Layer 4, IPv4/IPv6 Endpoints, UDP/TCP Endpoints, and conversations, enabling precise analysis of network performance. Capable to compute and visualize network metrics with millisecond precision, including Packet Count, Byte Count, Packets/sec, and Bits/sec, provides real-time insights crucial for optimizing network efficiency.

GL’s PacketScan™ 5G protocol analyzer supports monitoring of 5G networks. It captures, segregates, monitors, and collects statistics on all calls over N1N2, N4, N8, N10, N11, N12 and N13 interfaces of the 5G network. The 5G Protocol Analyzer is an optional module that can be acquired with PacketScan™.

GL’s TCP Analytics application analyzes TCP connections between both internal Local Area Network (LAN) and external Wide Area Network (WAN) computers including servers and clients. The application helps troubleshoot large bandwidth consumption, failed TCP sessions, packet loss, poor TCP throughput, rogue connections, security incidents including exfiltration of files, and more. TCP Analytics (PKV400) is an optional application with PacketScan™ HD - Network Monitoring Appliance.

Main Features

  • PacketScan™ can monitor up to 2000 simultaneous calls with bidirectional RTP traffic
  • PacketScan™ HD can monitor 20000 simultaneous calls with bidirectional RTP traffic from 1 Gbps to 100 Gbps link rates. Up to 50000 calls can be achieved by scaling with higher configurations
  • Circular buffer with capture and view filters
  • Monitor networks for long time periods spanning weeks or months at a time
  • Users can deploy multiple PacketScan™ HD systems throughout a network and send data to a centralized database for complete network visibility
  • Decrypt and analyze Voice over Long-Term Evolution (VoLTE) calls over Internet secured Protocol Security (IPsec) connection
  • Provides VoNR call statistics such as caller, callee, MOS scores, discarded packets and voice storage
Real-time and Offline Analysis
 Screen Shot of Real-time Analysis
  • Capture and analyze packets at wirespeed. Save the captured trace to a disk
  • Analyze in real-time or analyze recorded trace files off-line
  • Export captured files in CSV or ASCII file format
  • All or filtered traffic can be recorded into a trace file
  • Options to control the saving of trace file - user-defined prefixes, trace file with date-time prefixes, slider control to indicate the total number of files, file size, frame count, or time limit
  • Basic view comprises of – Summary, Detail, and Hex Dump view
  •  Any field from the protocol headers can be added to Summary view, i.e, user-configurable summary fields
  • User can select a frame in Summary View to analyze and decode each frame in the Detail View. Options provided to hide/display, and copy content to clip board
  • The Hex dump view displays the frame information in HEX and ASCII octet dump format
  • Ability to export data to a comma delimited file for subsequent importing into a database or spreadsheet
Call Detail Records
Screen Shot of Call Detail Record and Statistics View
  • Calls and sessions are classified as active, completed or failed giving the user an idea about the calls and its status in the network
  • View call specific information such as duration of the completed call, source & destination addresses, type of call, release cause, conference id, call identifier and more
  • Option to search for a particular call detail record from the captured traces
  • PacketScan™ can work with GL’s VoiceBand Analyzer (VBA) and Call Data Records (CDR) applications to provide useful call detail records. These records can be investigated for bad calls using custom Excel® addins
  • Ability to export completed calls summary report of PDA in CSV file format, and analyze using custom Excel® addins
  • Aggregate statistics can be obtained for any field or parameter in the protocol headers to study the performance of the overall VoIP network
  • Provides frame count, byte count, frames/sec, and bytes/sec etc of any of the protocol fields
Supported Protocols
  • SIP (Session Initiation Protocol) RFC 3261- MAC, IP, IPv6, UDP, TCP, SMPP
  • SIP ED-137 for Air Traffic Monitoring (Ground-to-Air, and Ground-to-Ground)
  • SIP-I, SIP-T
  • 5G N1N2, N4, N8, N10, N11, N12 and N13
  • Message Session Relay Protocol (MSRP) - RFC 4975
  • SCTP and Tunnel Filtering
  • Megaco- RFC 3525, RFC 3015
  • MGCP – RFC 3991
  • H.323/H.225
  • RTP - RFC 3550, RTCP, T.38 and Video
  • SIGTRAN ISDN over IP - Q.931, DASS2 and DPNSS over DUA (ISDN Q.921-User Adaptation Layer)
  • GSM Abis over IP - BTSM, CC, MM, RR, GCC, BCC, SMS
  • GPRS - GPRS-Gb interface (BSSGP, LLC, SNDCP, GMM, SMG)
  • GPRS – GPRS-Gn interface (GTPv2, GTP-IP, GTP-TCP, GTP-UDP)
  • T.38 Fax and Video calls
  • LTE - S1AP, X2AP, NAS, eGTP
  • Diameter – S6a, S6d, Cx, Dx, Zn, Zh, Wx, Gq, Gy, Sh, Dh, Gx, Rf, RO, Wg, Wm, Pr, Wa, Wd, Rx interfaces
  • Skinny Call Control Protocol (SCCP)
PacketScan™ supported Protocols
Supported Codecs Almost all industry standard codecs supported. For more information, please see "Voice Codec" webpage.
As a stand-alone tool
  • Capture calls in real-time for infinite time
  • In-depth real-time and post-process data investigation using Packet Data Analysis feature
  • Monitor adherence to protocol standards and report
  • Flexibility to add any protocol field to the summary view, filtering, and search features
  • Analyze with rich graphics, ladder diagrams, call trace
  • Complex Filtering and Search capabilities to record all or filtered traffic into a trace file
  • Option to create multiple aggregate column groups and prioritize the groups as per the requirement to display the summary results efficiently
  • Consolidated interface allows access to all the important settings,  and auto-startup actions; all the configurations done in any of these options can be saved to a file, and later loaded back to perform automated and repeated testing
  • Ability to connect to a central database for remote monitoring. The database may be accessed through a web browser for convenient viewing and analysis
As a Probe with Central Monitoring System - NetSurveyorWeb™ PacketScan™ can send protocol fields, and call detail records, along with traffic summary of captured calls to a central database. NetSurveyorWeb™ displays the data from the database in a simple web-based browser, featuring rich graphics, custom search, report and filter configurations.
As a Single Point Packet over IP CDR Analysis System PacketScan™ HD can work with GL’s VoiceBand Analyzer and Call Detail Records applications to generate call detail records as CSV files and voice files for each direction. The call detail records are used for further analysis using built-in Excel® tools.
Filtering and Search
Screen Shot of Real-time Capture filter
Screen Shot of Offline View Filter
  • Filtering and search capabilities add a powerful dimension to the SIP analyzer
  • Allows the user to automatically create search/filter criteria from the current screen selection
  • Analyze frames of interest, user can select real-time capture filters which also includes protocol filter
  • Isolate required frames from original frames in real-time/offline
  • Set filters on Data Link layer, MAC layer, IP, TCP/UDP and more
  • Any protocol field can be added to the filtering, and search features providing users more flexibility to monitor required protocol fields
  • The offline filter allows filtering based on frame number, time, length, message types, etc
  • User can create their own filters using custom filter option which provides flexibility to the user to check the fields and use the logical conditions more efficiently
Packet Data Analysis
  • SIP, MSRP, RTP, H.323, MEGACO, MGCP, GSMA, IuCS, and Skinny (SCCP) protocols supported
  • RTP packet statistics for each direction of a call
  • Full RTP Analysis with audio capture/playback supported for all common codecs
  • Supports decoding of AMR and AMR_WB codec with IuUP Header
  • Supports decoding of Voice over LTE
  • A host of counters gives the user an instantaneous snapshot of the VoIP traffic on the network
  • Graphical representation of statistics including ladder diagrams of VoIP calls
  • Save calls in HDL, PCAP, or PCAPNG file format for further analysis
  • Ability to export PDA summary and detail reports of selected or all calls in PDF file format
  • Ability to export completed calls summary report of PDA in CSV file format, and analyze using custom Excel® addins
  • The RTCP-XR (Real-time Transport Control Protocol Extended header) VoIP Metrics Report Block 7 provides the information about the voice quality (i.e MOS score) of the opposite traffic channel
  • Provides a complete call flow of a 5G session
  • Generates VoIP Key Performance Indicators (KPI) Reports:
    • Call Success Ratio
    • Calls Per Second
    • Post Dial Delay
    • Error Code Distribution
    • Answer Seizure Ratio
    • Call Duration
  • Creates SIP Registration KPI Reports:
    • Register messages per sessions
    • Registrar(s) distribution
    • Registration(s) vs Deregistration(s) Over Time
    • Error code distribution
Performance Metrics
  • Signaling, audio, and video QoS parameters for each 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 a summary of signaling, audio, and video parameters such as Source/Destination Video Channels, Media Type, SSRC, Average Delay/Gap, Packet Counts, Media Delivery Index and Frame Rate for all video calls
  • Minimum, maximum and average round trip delay
  • Inband (DTMF & MF) events, Outband events as per RFC 2833 or RFC 4733 events, RFC 2833 events, RTP/RTCP packet count and reports per direction
QOS Parameters
  • 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
  • Measure jitter, delay and gap for audio and video traffic
Triggers and Actions
  • Trigger intelligent actions based on signaling and traffic conditions
  • Filter incoming packets based on occurrences of particular signaling or traffic parameters followed by a set of actions for the completed calls
Traffic (Digits, Audio, Video, Fax) Handling
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)


PacketScan™ HD - Network Monitoring Appliance
PacketScan™ HD - Network Monitoring Appliance
PacketScan™ HD - 2U Rack Unit


Supported Interfaces

4x 1 Gbps – 850/1310 nm SFP Module; Ethernet/Optical SFP modules
2x 10 Gbps – 10GBASE-SR SFP+; Optical only
2x 40 Gbps – MTP/MPO Connector for CFP2; Optical only
2x 40/2x 100 Gbps – MTP/MPO Connector for CFP2; Optical only

Hardware Filters

Screenshot of Hardware Filters

Supports defining up to 10 filters at Layer 2, 3, 4, and 5

  • MAC: Frames can be filtered out based on Ether Type and FCS Error
  • VLAN 0, 1, 2: Filters frames based on Tag protocol ID, User Priority, CFI, and VLAN ID
  • IPV4: Frames can be filtered based on Source IP Address, Destination IP Address, Protocol Type, Header Length, Differentiated Services, Ds_ECN, DS_CodePoint, Total Length, Check Sum Error, IP Datagram ID, Fragmentation Offset, Flag_DontFragment and Flag_MoreFragments
  • IPv6: Frames can be filtered based on Source IP address, Destination IP address, Next Header, and Payload Length
  • Tunnel Traffic: Tunnel filter provides a method to filter the packets of one protocol within another protocol. GTP, GRE and VXLAN are available tunneling methods. Hardware filters can be applied to Tunnel 1 and Tunnel 2 layers
  • ARP: Frames can be filtered based on Sender MAC Address, Target MAC Address, Sender IP Address, Target IP Address and Option Code
  • TCP: In TCP layer Frames, can be filtered based on source port, destination port and check sum error
  • UDP: In UDP layer Frames can be filtered based on source port, destination port, check sum error, UDP length and payload. For more details, refer to
  • SCTP: SCTP packets can also be filtered based on source port or destination port
  • SIP and RTP: SIP and RTP packets can also be filtered based on source port or destination port




GSM, UMTS, LTE, IMS, SIP, RTP, T.38, RTCP, and much more
(some protocol support requires additional licensing)

Capture Timestamp

Absolute, Relative, Difference, NTP
4 Nano-second resolution

Captured Trace Format

GL’s Proprietary HDL, PCAP, PCAPNG
Frame Decodes can be saved to TXT file format


Hardware Filter at line rate, Application  Level Capture Filter, and Post Processing Filter and Search


4 x 1GigE - 20000 calls with bi-directional RTP traffic
2 x 10GigE - 30000 calls with bi-directional RTP traffic

Extracting/recording voice

  • 2500 simultaneous calls (maximum)
  • Option to record filtered calls of interest only


Retrive Data: Failed
Retrive Data: Failed
Retrive Data: Failed
Retrive Data: Failed
Retrive Data: Failed
Retrive Data: Failed
Retrive Data: Failed
Retrive Data: Failed
Retrive Data: Failed
Retrive Data: Failed


Item No. Item Description
PKV120 PacketScan™  HD – High Density IP Traffic Analyzer w/ 4x1GigE
includes PKV100 – Online (not Offline) for temporary audio codec support

SFP Transceiver for 1 Gbps, Electrical, RJ45 (2)
Ethernet cables (2)
PKV120p PacketScan™ HD w/4 x 1GigE - Portable

SFP Transceiver for 1 Gbps, Electrical, RJ45 (2)
Ethernet cables (2)
Pelican Carry Case (1)
Power Cable with international standards (1)
PKV122 PacketScan™ HDHigh Density IP Traffic Analyzer w/ 2x10GigE
includes PKV100 – Online (not Offline) for temporary audio codec support

Multirate SFP+ (SM or MM) (2)
PKV122p PacketScan™ HD w/2 x 10 GigE - Portable

Multirate SFP+ (SM or MM) (2)
Pelican Carry Case (1)
Power Cable with international standards


PacketScan™ HD w/40/100 GigE

QSFP+ (SM or MM) (2)
Optical cable as required


PacketScan™ HD w/40/100 GigE - Portable

Multirate SFP+ (SM or MM) (2)
Optical cable as required
Pelican Carry Case (1)
Power Cable with international standards (1)

PKV121 PacketScan™  FB - (Offline Analyzer)
PKV123 PacketRecorder™ HD & PacketRePlay™ HD
PKV400 TCP Analytics (Optional with PacketScan™)

Specifications are subject to change without notice.