Troubleshooting Tools For H.323 Video

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Troubleshooting Tools For H.323 Video

• VRG/DRG Meeting
• Thursday, Dec 2, 2004

Sujay Daniel Info.Sys Network Architect,
NJEDge.Net
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What you need

• Polycom PVX
• Software Codec downloadable at
  http//www.polycomconnect.com/Apps/DCS/mcp?r7003e
  ZS0000003G1803eZS0
• 30-day License XPVX-DEMO-0105
• Key Code X79E-F9A3-6110-0C85-0001
• Ethereal (packet capture utility)
• Free software downloadable at
  http//www.ethereal.com
• Webcam
• Notebook/Laptop PC
• Intel Pentium IV 1.8 GHz or higher
• ViaVideo or DxVA Pentium III 8000MHz
• DirectX 9.0b or later
• Internet Explorer v6.0
• for Webcommander

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Polycom PVX

• Features
• High quality, sharp video with H.264 compression
• CD-like audio quality with Polycoms Siren 14
  audio
• IP network support at call rates up to 2 Mbps
• Call security ensured via embedded AES encryption
  of audio, video and content
• Ability to monitor Call Media Statistics
• Supports DirectX Video Acceleration (DxVA)
• Recommended Cameras
• Polycom ViaVideo
• Polycom ViaVideo II
• Logitech QuickCam Pro 4000
• Logitech QuickCam for Notebooks Pro
• Logitech QuickCam Orbit

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Setting up the Polycom PVX
Enter the IP address of your gatekeeper
Specify an e.164 number for the codec
Make sure the packets are being marked With IP
precedence of 4 for video and audio
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WebCommander
For testing with the portal, add the codec in
WebCommander
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WebCommander
Place the codec in a meeting with another codec
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EtherealCapturing packets

• Click on Start under the Capture menu

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EtherealCapturing packets

• Select the right network interface

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EtherealCapturing packets
If your codec was configured as dial-out in
WebCommander, then click on the Connect button
next to your codec
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EtherealCapturing packets
If your codec was configured as dial-in in
WebCommander, then Click on the Call button
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EtherealCapturing packets
Packets are being captured
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Polycom PVXStatistics Screen
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EtherealStopping the capture
After your test time hang up the codec by
clicking the Hang-up button
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AnalysisChecking IP Precedence
Check if the packets are being marked for IP
precedence of 4
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AnalysisRTP Stream Analysis
Select a video packet In the menu click on
Statistics gt RTP gt Stream Analysis
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AnalysisRTP Stream Analysis
Delay and Jitter values are shown for the
incoming video stream
Packet 318 319 are out of order
Click on the Graph button to display this
information graphically
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AnalysisRTP Stream Analysis - Graphs
Graph of Delay (in ms) v/s time
Graph of Jitter (in ms) v/s time
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AnalysisRTP Stream Analysis - Exporting
To export this information to Excel click on the
Save as CSV button
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AnalysisRTP Stream Analysis - Excel
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AnalysisRTP Stream Analysis Excel Reporting
Bandwidth Graph
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AnalysisRTP Stream Analysis Excel Reporting
Graph of Delay and Jitter
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Thank You
DRG Meeting - Thursday, Dec 2, 2004