Polycom ViaVideo manual Quality of Service and Firewalls, Use Fixed Ports

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Chapter 3

System Information and Diagnostics

We recommend that you select line speeds that you know your network can handle. If you are not sure which line speeds are best, contact your network administrator.

ViaVideo provides ultra-low speeds, 80 and below, to provide for connection over very low bandwidth networks, such as dial-up modems. Although the low transfer rate results in blocky image transmission, audio quality is not affected.

Quality of Service and Firewalls

In this screen, you can configure your quality of service, Network

Address Translator (NAT), and firewall options.

Use Fixed Ports	Specifies the fixed ports assigned to
	ViaVideo when working with a firewall.

System is behind a NAT Alerts ViaVideo to use the IP address that appears in the NAT outside (WAN) address field as its external IP address. When using a Virtual Private Network (VPN) for your network connection, make sure that System is behind a NAT is not selected.

ViaVideo User’s Guide

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Contents ViaVideo User’s Guide Page Warranty Other RestrictionsTrademark Information Patent InformationImportant Safeguards Regulatory Notices FCC NoticeUnderwriters’ Laboratories’ Statement RADVision StatementContents Audio Connection System Information and DiagnosticsNetwork Connection Troubleshooting Contents ViaVideo User’s Guide Viii System Requirements and Installation Hardware RequirementsInstalling Hardware Installing SoftwareSoftware Requirements Starting ViaVideo Turn on the CameraInitial Setup ViaVideo built-in microphoneHeadset with microphone Placing a Call Using Manual DialingCamera Calibration 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 Ending a Call Answering CallsClosing ViaVideo Chapter Using ViaVideo Calling FeaturesUsing the Remote Control Hang UpSnapshot VolumeAudio Mute Information Screen Access Window ControlsPicture in Picture PIP Minimize WindowRe-Size the ViaVideo Display Sending SnapshotsLeaving a Callback Message Using the Address Book Address Book and Speed DialDo This Local and Global Address Book Entries Local EntriesGlobal ILS Server Entries Register This System When Powered On Go to the Directory Services screenDisplay Global Address Delete All Using Speed DialLock Controlling Audio and Video Controlling AudioVia the On-Screen Remote DialVia the Audio Screen Muting Video Mute Auto Answer Calls in the Audio screen SystemChapter Collaboration and Application Sharing Multiple IP AddressesChapter System Information and Diagnostics Using the System Information ScreensSystem Information and Diagnostics Diagnostics Network Statistics Audio Jitter Advanced StatisticsVideo Jitter Call Status Reset System Camera Calibration Generate Tone Setup Auto Start ViaVideo When Auto Start ViaVideo is selected General323 Auto AnswerShow Half-Size Display When Show Half-Size Display is Show AnimationsUser Name MailDirectory Services LAN and Internet Register this system when starting ViaVideoDisplay Global Addresses Wins Resolution Default GatewayHost Name IP AddressAudio Volume Control Master VolumeWave Volume LinePC Software SoftwareViaVideo Software Gatekeeper SetupDialing Speeds 323 Display IP Dialing ExtensionMultiple IP Addresses Gatekeeper Dialing Speeds Quality of Service and Firewalls Use Fixed PortsAuto discover NAT IP address NAT outside WAN addressIP Precedence Dynamic BandwidthChapter Audio Connection PC with SpeakersPC with Headphones Headphones Only Headset with Attached Microphone Pick Your Connection Type Simple Connection Just a Modem, ThanksRouter With NAT, No Firewall Router With Firewall, Using a DMZRouter With Firewall Configure Your Connection Through a Virtual Private NetworkWhen you select Auto discover NAT IP Address, ViaVideo Configure your ViaVideo for NATSelect the System is Behind a NAT option Open and Assign Ports in the Firewall System Information screenRouter With Firewall, Using a DMZ Assign your ViaVideo to the DMZ Through a Virtual Private Network Appendix What’s a Firewall? Port Number Assignation Opening PortsIs it Safe? What’s a DMZ? What’s a Network Address Translator? Appendix General Troubleshooting Problem Explanation SolutionAudio Troubleshooting InfoDiagnosticsGenerateVolume Controls Wave, and MasterVideo Troubleshooting Windows Control PanelInfoSetupH.323QOS Bandwidth optionError Messages Installation ErrorsErrors Error Message Explanation SolutionGatekeeper setting SetupH.323Appendix C