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SIP Workbench is a graphical SIP, RTP, STUN, and TURN protocol analyzer and viewer designed to help illustrate and correlate VoIP and IM network interactions. SIP Workbench is a versatile tool designed for protocol developers, system integrators, and end-users to use to visualize, diagnose, and debug complex multi-protocol interactions.

SIP Workbench reads Ethereal/Wiresharp libpcap files and can perform live captures itself. Additionally, it can export SIP, RTP, and STUN information in text-based ladder diagram.

SIP Workbench is a VoIP protocol analysis tools for the Session Initiation Protocol (RFC 3261) supported on Windows (Linux and MacOS coming soon). SIP Workshop works in conjunction with Ethereal/Wireshark and libPCAP to visually display your protocol interactions from network captures.

With SIP Workshop, you can view and diagnose SIP message, STUN, TURN, and RTP from a single convenient user interface. Additionally, you can filter messages base on source/target IP address and method types to reduce "noise" in traces. SIP Workshop supports bookmarks and the ability to export text-based ladder diagrams.

Key Features:

Graphical display of complex interactions
Correlates SIP messaging
Filters large data sets
Decodes STUN and TURN packets
Summaries media
Operates directly from network captures

Benefits:

Saves time
Users can quickly review packet interactions, filter on a particular flow, and identify retransmissions, timing inconsistencies, failed requests, dropped responses, and routing issues. These features allow for quicker diagnosis and resolution of problems.

Facilitates communications
While a troubleshooting a problem, users can export ASCII representations of an interaction, annotate it, and share it with a vendor, system administrator, or developer. Users can export an entire packet capture or a particular flow or the contents of a single message.

Highlights problems
SIP Workbench includes visual indicators representing negative responses, missing responses, media start events, and timing characteristics. Different messages and message types are color coded to highlight and separate potential problems from expected interactions.

Learning tool
Those unfamiliar with SIP, STUN, TURN and RTP benefit from SIP Workbench's intuitive graphical interface that allows users to visualize interactions and compare message flows. Sample captures are also included.

Visual Display

SIP Workbench displays SIP, STUN, TURN and media start events in a color-coded ladder diagram. The diagram identifies the source and target IP addresses and ports, user-agent information, transport types (UDP or TCP), and summary information for the message. SIP markers include the method, response code/text, and sequence numbers; audio markers include the payload type; and STUN/TURN markers include the method type and mapped IP or relay addresses.

When selecting a marker, the user is presented with transactional and session markers to help identify related messages. Time duration is provided for the session.

Correlation
SIP Workbench maintains the relationship of SIP, STUN/TURN, and audio messages in the presentation of data. This feature allows users to ignore and filter uninteresting messages and and the decoded contents of SIP, STUN, and TURN messages.

Network Capture

Users can open libPCAP network captures created by tcpdump and WireShark. SIP Workbench can also capture packets directly for viewing.

UI Customization
SIP Workbench allows users to customize both how and which data are presented. Users can enable/disable all of the visual correlation features and modify the color coding used to display message categories (i.e., request, provisional response, error response, final response, error response, media markers, and related messages).