Polycom ViaVideo manual Auto discover NAT IP address, NAT outside WAN address, IP Precedence

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Chapter 3

System Information and Diagnostics

Auto discover NAT IP address

Selecting this option activates ViaVideo’s automatic external IP address feature, which discovers your NAT’s external IP address and automatically enters it in the NAT outside (WAN) address field.

NAT outside (WAN) address

Specifies the external IP address used by your NAT. If ViaVideo is unable to discover your external IP address automatically, you can enter it here.

IP Precedence	Specifies the priority given IP packages
	sent by ViaVideo. The default value for
	IP precedence is 5.
Dynamic Bandwidth	Specifies use of dynamic bandwidth
	allocation. ViaVideo’s dynamic
	bandwidth function automatically finds
	the optimum line speed for a call.
	If you experience excessive packet loss
	while in a call, the dynamic bandwidth
	function incrementally lowers the line
	speed until there is no more packet loss.
	After some time with no packet loss, the
	dynamic bandwidth function
	incrementally increases line speed until
	packet loss occurs. At this point, the
	dynamic bandwidth function lowers the
	line speed one increment to ensure
	minimal packet loss with maximum
	throughput.

For more information about configuring your ViaVideo for operation behind a firewall or NAT, see “Network Connection,” on page 63.

© Polycom, Inc.

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ViaVideo User’s Guide

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Contents ViaVideo User’s Guide Page Other Restrictions WarrantyTrademark Information Patent InformationRegulatory Notices FCC Notice Important SafeguardsUnderwriters’ Laboratories’ Statement RADVision StatementContents Network Connection System Information and DiagnosticsAudio Connection Troubleshooting Contents ViaVideo User’s Guide Viii Hardware Requirements System Requirements and InstallationSoftware Requirements Installing SoftwareInstalling Hardware Turn on the Camera Starting ViaVideoViaVideo built-in microphone Initial SetupHeadset with microphone Camera Calibration Using Manual DialingPlacing a Call Info icon Call status light IP address Chapter Using the Address Book or Speed Dialing New entry Edit entry Delete entry On-Screen Remote Control Answering Calls Ending a CallClosing ViaVideo Chapter Calling Features Using ViaVideoHang Up Using the Remote ControlAudio Mute VolumeSnapshot Window Controls Information Screen AccessPicture in Picture PIP Minimize WindowSending Snapshots Re-Size the ViaVideo DisplayLeaving a Callback Message Address Book and Speed Dial Using the Address BookDo This Local Entries Local and Global Address Book EntriesGlobal ILS Server Entries Display Global Address Go to the Directory Services screenRegister This System When Powered On Lock Using Speed DialDelete All Controlling Audio Controlling Audio and VideoVia the On-Screen Remote DialVia the Audio Screen Mute Auto Answer Calls in the Audio screen System Muting VideoChapter Multiple IP Addresses Collaboration and Application SharingChapter Using the System Information Screens System Information and DiagnosticsSystem Information and Diagnostics Diagnostics Network Statistics Video Jitter Advanced StatisticsAudio Jitter Call Status Reset System Camera Calibration Generate Tone Setup General Auto Start ViaVideo When Auto Start ViaVideo is selected323 Auto AnswerShow Animations Show Half-Size Display When Show Half-Size Display isUser Name MailDirectory Services Display Global Addresses Register this system when starting ViaVideoLAN and Internet Default Gateway Wins ResolutionHost Name IP AddressAudio Master Volume Volume ControlWave Volume LineViaVideo Software SoftwarePC Software Dialing Speeds SetupGatekeeper Display IP Dialing Extension 323Multiple IP Addresses Gatekeeper Dialing Speeds Use Fixed Ports Quality of Service and FirewallsNAT outside WAN address Auto discover NAT IP addressIP Precedence Dynamic BandwidthChapter PC with Speakers Audio ConnectionPC with Headphones Headphones Only Headset with Attached Microphone Simple Connection Just a Modem, Thanks Pick Your Connection TypeRouter With Firewall Router With Firewall, Using a DMZRouter With NAT, No Firewall Through a Virtual Private Network Configure Your ConnectionSelect the System is Behind a NAT option Configure your ViaVideo for NATWhen you select Auto discover NAT IP Address, ViaVideo System Information screen Open and Assign Ports in the FirewallRouter With Firewall, Using a DMZ Assign your ViaVideo to the DMZ Through a Virtual Private Network Appendix What’s a Firewall? Is it Safe? Opening PortsPort Number Assignation What’s a DMZ? What’s a Network Address Translator? Appendix Problem Explanation Solution General TroubleshootingInfoDiagnosticsGenerate Audio TroubleshootingWave, and Master Volume ControlsWindows Control Panel Video TroubleshootingBandwidth option InfoSetupH.323QOSInstallation Errors Error MessagesErrors Error Message Explanation SolutionSetupH.323 Gatekeeper settingAppendix C