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LAN Analyzer and Protocol Decoder - CommView

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Introduction
About CommView
What's New
Using the Program
Overview
Selecting Network Interface for Monitoring
Latest IP Connections
Packets
Logging
Viewing Logs
Rules
Advanced Rules
Alarms
Reconstructing TCP Sessions
Reconstructing UDP Streams
Searching Packets
Statistics and Reports
Using Aliases
Packet Generator
Visual Packet Builder
NIC Vendor Identifier
Scheduler
Using Remote Agent
Using RPCAP
Capturing Loopback Traffic
Port Reference
Setting Options
Frequently Asked Questions
VoIP Analysis
Introduction
Working with VoIP Analyzer
SIP and H.323 Sessions
RTP Streams
Registrations
Endpoints
Errors
Call Logging
Reports
Call Playback
Viewing VoIP Logs
Working with Lists in VoIP Analyzer
NVF Files
Advanced Topics
Capturing High Volume Traffic
Working with Multiple Instances
Running CommView in Invisible Mode
Command Line Parameters
Exchanging Data with Your Application
Custom Decoding
CommView Log Files Format
Sales and Support

NVF Files

Note: The VoIP analysis module is only available to VoIP license users or evaluation version users who selected VoIP evaluation mode.

VoIP analyzer allows you to save one or several VoIP data objects to a container file in NVF format. Unlike common capture files, NVF doesn't contain captured data packets. Rather, this is a set of VoIP object(s) stored in a single file. NVF files are instrumental when you want to save a VoIP call with all the related streams for future analysis.

VoIP objects that can be saved to NVF files are:

· SIP Sessions
· H.323 Sessions
· RTP Streams

To save an object to a NVF file, select one or several objects in the VoIP analyzer lists, right-click to open the context menu, and select the Save Objects As… menu item.

SIP or H.323 sessions and respective RTP streams (if any) will be saved to a file. However, if you choose to save the RTP stream, the respective parent SIP or H.323 sessions will not be saved.

You can load the saved NVF file into VoIP Log Viewer window.