Internet and Intranet Calling with Polycom PVX
Contents
1. nner 16 1 550 18 Test E A EE E Weve 18 Uni stall 18 Advanced Router LO POLYCOM INC INTERNET AND INTRANET CALLING WITH PVX PVX is an advanced conferencing software application that delivers Polycom s premium quality audio video and content sharing to your PC and standard USB camera PVX brings unprecedented video conferencing technology to your desktop PC with the first software application ever offered by the industry leader Using the industry s highest quality audio video algorithms PVX is the only PC application to offer both secure communications and People Content PVX supports most standard web cams eliminating the need for a separate video camera When used in conjunction with a laptop and portable USB camera PVX provides the ultimate in portability This application note explains how to configure PVX for the broadband connection in your office home office or small business Refer to this document for the system settings that will maximize video conferencing performance without compromising your network security Before You Begin System Requirements C POLYCOM INC Please make sure that your PC meets the minimum system requirements listed in the following table If2. Call Setup WAN LAN 192 168 0 100 TCP 1720 Mit ati day Sun Sun Figure 8 Firewall Rules on D Link Router Set up a DMZ Some users may prefer to set up a PVX computer in a demilitarized zone DMZ A DMZ can be a quick way to configure PVX without opening specific ports individually DMZ is a firewall configuration that opens all of the ports through the router to a specific computer and places the computer outside of the firewall Other devices within the network remain within the protection of the firewall By isolating the computer with open ports DMZ protects the rest of the network from exposure If outside users penetrated the security of the DMZ computer they could not gain access to any other computers on the network However PVX requires only a limited number of open ports so the advantage of opening all ports by running in a DMZ is minimal If you choose to set up a DMZ please refer to your router s user manual for instructions 14 INTERNET AND INTRANET CALLING WITH PVX Configuring Your Connection from the PVX Application If you need to change your connection settings after you finish the setup wizard you can do so through the PVX application To change your connection settings 1 In PVX click a Setup gt Network to open the Network tab 2 On the Network Setup page configure the selections for your connection as fo
3. POLYCOM INTERNET AND INTRANET CALLING WITH PVX AN APPLICATION NOTE October 18 2004 2004 POLYCOM INC ALL RIGHTS RESERVED POLYCOM THE POLYCOM LOGO PVX VIAVIDEO AND PEOPLE CONTENT ARE REGISTERED TRADEMARKS OF POLYCOM INC IN THE UNITED STATES AND OTHER COUNTRIES ALL OTHER TRADEMARKS ARE THE PROPERTY OF THEIR RESPECTIVE COMPANIES INTERNET AND INTRANET CALLING WITH PVX Contents Before YOU 2 2 Walid ale ee ee eh ee ere eee er ee reer Ser 4 Activating Your PVX S oftware heres eid ade etna ented detente 4 Directory Setup mresep aa plete vedas haan pos ad ede bite Maca dag 4 Running the Setup 4 Setup for Calling Within 1 5 Setup for Calling Within a Virtual Private Network VPN 5 Setup for Calling Through a DSL or Cable Modem enna 8 Setup for Calling Through a Network 8 Configuring Your Connection from the PVX 15 Testing and Troubleshooting 15 Software Firewalls cal ne Abad Ad eat eet ae oa es 16 Calling Speed and
4. 6 7 8 Click Apply Repeat steps 4 6 of this procedure for the remaining ports in Table 2 When you have opened and assigned all of the ports in Table 2 review the Port Forwarding page Check that all of the ports are correct enabled and assigned to the correct Server internal Address Port Forwarding Service Name Server IP Address SERVICES fiz fies fo Ad Enable Service Name Start Port Port Server IP Address 1120 1503 1503 192 168 0 2 call setup 1720 1720 192 168 0 2 signalling 3230 3235 192 168 0 2 Add Custom Service Edit Service Delete Service Apply Cancel Figure 6 Port Forwarding on NetGear Router 11 INTERNET AND INTRANET CALLING WITH PVX Linksys Routers The following procedure applies to the Linksys BEFSX41 router The screens and settings may vary slightly for different Linksys models To configure a Linksys router 1 POLYCOM INC In a browser such as Internet Explorer type the address of your router Consult your Linksys user documentation for the IP address Log in to your router setup Consult your Linksys user documentation for the user name and password Locate the Port Range Forwarding page Depending on your router model Port Range Forwarding may be listed in the Advanced or the Applications and Gaming menu On the Port Range Forwarding page enter the following information for the fir
5. Address and click OK You must also configure your router before you can make calls with PVX Please continue to the next section Configure Router Port Forwarding INTERNET AND INTRANET CALLING WITH PVX POLYCOM INC Configure Router Port Forwarding This section provides instructions for opening and assigning ports in the most common routers from NetGear Linksys and D Link Most other routers require similar procedures Before you can change your router configuration you must have the following e The IP address of your router Consult your router s user documentation for the IP address Note that many routers use the default address 192 168 0 1 e Your router s administrator name and password Consult your router s user documentation for the user name and password Note that many routers use the default user name admin and password blank or password e The IP address that the NAT has assigned to your computer To obtain the IP address that a NAT has assigned to a specific Windows XP computer click Start gt Settings gt Network Connection gt LAN and select the Support tab The Details window shows the IP address PVX also lists the local IP address in the main window With any router brand or model you will open the ports listed in the following table Table 2 Router Ports to Open PORT FUNCTION TCP or UDP 1720 H 323 Call setup TCP 3230 3235 Signaling and control for audio call
6. Consult your D Link user documentation for the user name and password 3 Select the Advanced tab 4 Click the Firewall button 5 On the Firewall page enter the following information for each port in Table 2 Enabled Click this radio button Name Any unique identifier such as the Function listed in Table 2 Action Select Allow Source Interface WAN Range Start Range End blank Destination Interface LAN Range Start The IP address internal that the NAT has assigned to your computer Range End blank Protocol TCP UDP or for both Port Range The Port listed in Table 2 or the start and ending value of the range listed in Table 2 Schedule Always or select a time for the port to be open POLYCOM INC 13 INTERNET AND INTRANET CALLING WITH PVX POLYCOM INC When you have opened and assigned all of the ports listed in Table 2 review the Firewall Rules list Check that all of the ports are correct enabled and assigned to the correct IP internal Address as shown in the following figure Enabled Disabled Name Signaling for Audio Action Allow Deny Interface IP Range Start IP Range End Protocol Port Range Source WAN Destination 1 192 168 0 100 3230 3235 Schedule Always From time 01 00 01 00 209 Firewall Rules List Apply Cancel Help ActionName Source Destination Protocol
7. screens NAT Detected dialog box If the wizard asks whether to use the external WAN address click No Network Setup page Select Use the PC s Local I P Address Network Setup C Use the External VAN IP Address Use VPN Address or Secondary Network Adapter Use Fixed Ports You also must open 1720 for H 323 1503 for T 120 and port 3603 for the Web interface through your firewall Figure 4 PVX Network Setup for DSL or Cable Modem Setup for Calling Through a Network Router POLYCOM INC Network routers enable multiple computer resources to share a high speed Internet connection such as Digital Subscriber Lines DSL or cable Most routers for Small Office Home Office SOHO networks include a firewall to protect the network by controlling unsolicited traffic from outside the network INTERNET AND INTRANET CALLING WITH PVX POLYCOM INC To allow video conferencing traffic to pass in and out of your local network you must open ports in the firewall or your router will block the request Routers also provide Network Address Translation NAT NAT uses private internal addresses for the devices within the network while using a single external address to communicate outside the network NAT adds an extra level of security by effectively masking the internal network behind a single external address PVX supports video calls behind a firewall order to run PVX thro
8. you can communicate with anyone in your office network Enter this information in the setup wizard screens if you are setting up PVX for calling within your company network Detected dialog box If the wizard asks whether to use the external WAN address click No Select Use the PC s Local IP Address to make Intranet calls Network Setup 555 555 555 555 Use the External IP Address Use VPN Address or Secondary Network Adapter Use Fixed Ports You also must open port 1720 for H 323 port 1503 for 7 120 and 3603 for the Web interface through your firewall If you need to use PVX to make external calls outside of your Intranet please check with your network administrator Calls outside of your Intranet require changes in the firewall settings to allow video through specific ports Network administrators oversee firewall configurations for enabling calls to and from the Internet Setup for Calling Within a Virtual Private Network VPN POLYCOM INC VPN is a private network that uses the public network the Internet for secured communication Many offices use a virtual private network VPN to connect multiple locations such as home offices and remote branch offices With a VPN connection users have full access to their company network whether they are located remotely or at the central offices Calls within your company VPN remain withi
9. your PC does not meet the requirements you will not be able to make PVX calls NOTE If you are running on a laptop PC be sure to have the AC power plugged in before starting Windows to ensure the CPU is running in full power mode Table 1 System Requirements Windows Windows 2000 with Service Pack 4 or later Windows XP with Service Pack 1 or later PC Processor Polycom ViaVideo and ViaVideo 11 camera People Video only 800 MHz Intel Pentium 111 Any Intel Pentium 4 or Intel Pentium e 1800 Athlon XP People Content 1 2 GHz Intel Pentium 4 900 MHz Intel Pentium e 1800 Athlon INTERNET AND INTRANET CALLING WITH PVX Web Cam with PC processing H 263 People Video only 1 0 GHz Intel Pentium 3 1 2 GHz Intel Pentium 4 900 MHz Intel Pentium e 1800 Athlon XPH 264 People Video only 1 5 GHz Intel Pentium 4 e 1800 Athlon People Content 2 0 GHz Intel Pentium 4 1 4 GHz Intel Pentium 2200 Athlon Polycom PVX requires a processor that supports the Intel SSE processor extensions SSE is not supported on the Pentium II family or Athlon CPUs prior to the Athlon XP RAM 256 MB Video Memory 8 MB Hard Drive Space 60 MB available for Polycom PVX software USB Camera USB 1 x or 2 x web cam ViaVideo or ViaVideo 11 supported camera camera is optional for view only calls Spea
10. 128 kbps minimum to connect a call 16 INTERNET AND I NTRANET CALLING WITH PVX It is important to note that high speed DSL and cable services advertise bandwidth rates up to a specific soeed When a DSL or cable service claims connections up to 1 5 mbps for example this connection speed is a maximum and is not guaranteed Moreover most ISPs do not provide bi directional bandwidth in which the upload rate is the same as the download rate With most DSL and cable services downloading is much faster than uploading Downloading speed may be up to 1 5 mbps but uploading speed is typically in the order of 384 kbps for DSL and 256 kbps for cable When you specify a dialing speed for PVX to use on your system PVX uses the same specified rate for both upload and download If any computer in the video conference cannot upload at the speed you specified your calls may suffer from poor video quality or you may not be able to view video at all black screen For best results ask your Internet Service Provider for their upstream speed or their guaranteed bandwidth rate for uploading Start by setting the PVX dialing speed to the minimum rate claimed by your ISP and test your connection with faster settings To change your PVX call speed 1 In PVX click to open Select Speeds the Setup page 2 Select H 323 from the menu on the left of the page 3 the H 323 page select the Dynamic Bandwidth option to minimize the
11. e Address Setup button and select your VPN connection from the Designate Network Adapter list Click OK in Address Setup box and OK in Network Setup If your VPN is not listed in the network adapter list please refer to the user manual for your VPN client to find out how to get the address manually Setup Address Setup Figure 3 Network Setup for VPN POLYCOM INC 7 INTERNET AND INTRANET CALLING WITH PVX C When you connect to your VPN your company s network assigns you an address This is different from the address assigned by your router To make calls through your VPN you must choose the VPN as your network adapter If your VPN is not listed in the network adapter list please refer to the user manual for your VPN client to find out how to find the address Setup for Calling Through a DSL or Cable Modem Use the following instructions for setting up PVX on a computer that accesses the Internet directly through a DSL or cable modem with no network router Calls across the public Internet typically pass through a firewall that protects the computer from unsolicited traffic from the outside Computers connected directly to a broadband modem often use software based firewall If you have firewall software installed on your computer you may need to disable or configure the software See the Testing and Troubleshooting section of this document for more information Enter this information in the setup wizard
12. es Global Directory Service GDS Select Register with this Server if you want to call one another using the directory in PVX GDS is a global address book that Polycom provides on the Internet Internet Locator Server ILS Select Register with this Server if your company has an ILS Enter the name or IP address or the server in the entry field Obtain the name of the server from your company s network administrator In addition to calling one another using the directory you can also make calls using the DNS name your computer name IP address or an H 323 extension by using a Gatekeeper Running the Setup Wizard POLYCOM INC C The first time you start PVX a wizard guides you through the initial setup This section provides additional information you will need on some of the wizard pages to enable calling on the following types of connections e Within an Intranet e Within a Virtual Private Network VPN e Through a DSL or cable modem no router e Through a network router Refer to the appropriate section for your particular connection If you need to change your connection setup after you have finished the setup wizard you can do so through the PVX application For more information refer to Configuring Your Connection from the PVX Application in this application note INTERNET AND INTRANET CALLING WITH PVX Setup for Calling Within an Intranet Intranet calls remain inside the firewall so
13. impact of bandwidth variation 4 Click the call Speed button 5 the Select Speeds page select a Default Call Rate that matches your ISP upstream speed 128 kbps recommended Figure 9 Setting Call Speed POLYCOM INC 17 INTERNET AND INTRANET CALLING WITH PVX Network Issues Test Call Uninstall PVX If your router ports are forwarded correctly but you still cannot view video try setting up your router and PVX in the following order 1 Configure port forwarding on your router 2 Configure the PVX network setup 3 Reboot the router 4 Start PVX PVX may not function properly if more than one network connection is used simultaneously Polycom offers customers global access to a variety of video conferencing equipment Feel free to utilize these numbers to conduct testing of your video conferencing units www polycom com videotest If you need to uninstall PVX insert the installation CD to start the installation wizard From the Welcome page select Remove Advanced Router Setup POLYCOM INC The following ports are for advanced PVX features GMS Ports 21 FTP Software Updates amp Provisioning 80 HTTP Pulling ViewStation VS4000 info 3601 Proprietary Data Traffic GAB data 3603 TCP Pulling ViaVideo info since might be non web server PC 389 LDAP and ILS 1002 ILS GMS listens for connections on ports 80 and 3601 GAB and in the future will listen on por
14. kers or Headphones Headset Headset with microphone Computer speakers external or internal Speakers connected directly to ViaVideo Monitor SVGA 800 x 600 or higher resolution Network Access Broadband 1 64 kbps and above Microsoft Version 6 0 or later Internet Explorer Windows Media Player Version 9 0 or later Microsoft Version 9 0b or later DirectX Software Find out the current version on your computer using the DirectX Diagnostic Tool by clicking Start gt Run and entering dxdiag Download the latest update from http www microsoft com windows Directx POLYCOM INC 3 INTERNET AND INTRANET CALLING WITH PVX Installing PVX For instructions on installing PVX see the software CD packaging Also refer to the PVX Release Notes Activating Your PVX Software Directory Setup When you start PVX the application prompts you to activate your software You can either enter the activation codes or simply click Continue if you prefer to use the evaluation version The evaluation version allows you to make unlimited five minute conferences PVX will prompt you to activate your software every time it starts until a valid activation key is entered If you would like to have a full version please contact Polycom reseller or go to www polycom com to purchase PVX with an activation number When you set up PVX you can choose to register with the following servic
15. llows If you are setting up this type of connection Do the following INTRANET Select Use PC s Local Address Click Apply VPN Select Use VPN Address or Secondary Network Adapter Click Address Setup If you have already logged on to VPN the Designate Network Adapter lists your VPN connection Select your connection and click OK Otherwise select Manually Enter IP Address and enter the VPN address obtained from your VPN client On the Setup page click Apply DSL or CABLE MODEM Select Use PC s Local Address Click Apply NETWORK ROUTER Testing and Troubleshooting Select Use the External WAN IP Address Enter your external WAN IP address Your external address is the number provided by your ISP Most routers list the external IP address on a router status page Select Use Fixed Ports 3230 and 3235 Click Apply Reboot your router Please refer to the PVX Release Notes for troubleshooting information including audio video camera and calling issues POLYCOM INC 15 INTERNET AND INTRANET CALLING WITH PVX Software Firewalls If your call connects but users cannot view the incoming video black screen please follow these steps 1 If you cannot see another user verify that his or her camera is working 2 If other users cannot see you verify that your camera is working 3 Verify that you have correctly followed the setup instructi
16. n the firewall so you can communicate with anyone in your office network without configuring PVX for connecting externally to the Internet This way users can make calls using the directory and all other communication equipment they have in the office Calls outside of your VPN require changes in the firewall settings to allow video through specific ports Please contact your network administrator Start your VPN client and establish a connection before starting PVX Enter this information in the setup wizard screens INTERNET AND INTRANET CALLING WITH PVX NAT Detected dialog box If the wizard asks whether to use the external WAN address click No Network Setup page Select Use VPN or Secondary Network Adapter Network Setup C Use the PC s Local IP Address Use the External VAN IP Address Use VPN Address or Secondary Network Adapter Use Fixed Ports You also must open port 1720 for H 323 1503 for T 120 and port 3603 for the Web interface through your firewall Figure 2 PVX Network Setup for VPN POLYCOM INC INTERNET AND CALLING WITH PVX When you connect to your VPN your company s network assigns you an address This is different from the address assigned by your router To make calls through your VPN you must choose the VPN as your network adapter After you finish the wizard start PVX and click Setup gt Network to open the Network tab Click th
17. ons 4 Refer to this section for possible causes Many systems run software only firewall packages from Microsoft or other products such as Zone Labs Black Ice Norton Firewall and McAfeee Firewall Firewalls may interfere with video communications connection Windows XP Users with the Windows XP operating system will not be able to place or receive video calls if the Internet Connection Firewall is enabled To correct this Right click My Network Connections Select Network Properties In Local Area Connection Properties select Advanced Ur a Clear the Internet Connection Firewall option Users running Windows XP Service Pack 2 may experience difficulty establishing a connection to incoming calls through a firewall If this occurs do the following Click Start and then choose Settings gt Control Panel Select Windows Firewall Select Exceptions EN Confirm the vvsys exe and Windows NetMeeting check boxes are selected Zone Labs If you are using the free downloadable version of Zone Labs firewall and virus protection turn the software off while using PVX If you are using other Zone Labs products refer to the user documentation for blocking and unblocking ports Calling Speed and Bandwidth POLYCOM INC Bandwidth rate is the connection speed or the number of bits per second of data that can travel through a system or line PVX is capable of up to 2 mbps However PVX requires
18. st port in Table 2 Application Any unique identifier such as the Function listed in Table 2 Start The Port listed in Table 2 or the starting value of the range listed in Table 2 End The Port listed in Table 2 or the ending value of the range listed in Table 2 TCP UDP The selection listed in Table 2 Where Table 2 lists both TCP and UDP enter the Application twice once as TCP and once as UDP Address The IP address internal that the NAT has assigned to your computer Enabled Click this box Repeat step 4 of this procedure for the remaining ports in Table 2 When you have opened and assigned all of the ports listed in Table 2 review the Port Range Forwarding list Check that all of the ports are correct enabled and assigned to the correct IP internal Address as shown in the following figure 12 INTERNET AND INTRANET CALLING WITH PVX Port Range Forwarding Port Range Application Start End TCP UDP IP Address Enabled 1720 TCP gt 1921681 100 B235 TCP 12181100 M 3235 UDP 1921684100 M Figure 7 Port Range Forwarding on Linksys Router D Link Routers The following procedure applies to the D Link DI 604 router The screens and settings may vary slightly for different D Link models To configure a D Link router 1 In a browser such as Internet Explorer type the IP address of your router Consult your D Link user documentation for the IP address 2 Log in to your router setup
19. t 3604 ViaVideo and other potentials later H 323 Ports 80 Static TCP HTTP Interface optional 389 Static TCP ILS Registration LDAP 1503 Static TCP T 120 1718 Static UDP Gatekeeper discovery Must be bidirectional 1719 Static UDP Gatekeeper RAS Must be bidirectional 18 INTERNET AND INTRANET CALLING WITH PVX POLYCOM INC 1024 65535 Dynamic TCP H245 1024 65535 Dynamic UDP RTP Video data 1024 65535 Dynamic UDP RTP Audio data 1024 65535 Dynamic UDP RTCP Control Information 3604 GMS Server Discovery Used by ViaVideo Broadcast Accord Polycom Network Systems Additional Ports 5001 Static MGC Manager 5003 can be chosen instead within MGC 21 Static TCP FTP retrieve MGC config Files etc RADVision Additional 1820 Gateway Signaling Call Setup 2720 MCU Signaling Call Setup 19
20. ugh a network router and firewall you must open specific ports for video conferencing You assign the open ports to the internal address as defined by NAT of the computer running PVX This process is known as port forwarding or pinholing This application note provides procedures for port forwarding on the most common routers If you have firewall software installed on your computer in addition to the router firewall you may need to disable or configure the software See the Testing and Troubleshooting section of this document for more information Enter this information in the setup wizard screens Detected dialog box If the wizard asks whether to use the external WAN address click Yes Network Setup page Select Use External WAN IP Address and select Use Fixed Ports 3230 and 3235 Network Setup C Use the PC s Local IP Address 63 87 Use VPN Address or Secondary Network Adapter 3230 3235 You also must open 1720 for H 323 1503 for 7 120 and port 3603 for the VWWeb interface through your firewall Figure 5 PVX Network Setup for Calling Through a Router Verify that the External WAN IP Address is the correct number provided by your ISP Most routers list the external IP address on a router status page If you need to change the address finish the wizard start PVX and click e Setup gt Network to open the Network tab Enter the correct External WAN IP
21. video TCP and UDP and data FECC 1503 T 120 Data collaboration TCP optional NetGear Routers The following procedure applies to NetGear MR814v2 and RP614v2 routers The screens and settings may vary slightly for different NetGear models The procedures assume that your router is correctly configured and connected to the Internet and that your network is operational To configure a NetGear router 1 In a browser such as Internet Explorer type the IP address of your router Consult your NetGear user documentation for the IP address 10 INTERNET AND INTRANET CALLING WITH PVX 5 POLYCOM INC Log in to your router setup Consult your NetGear user documentation for the user name and password From the Advanced menu on the left of the page select Port Forwarding On the Port Forwarding page select Add Custom Service On the Ports Custom Services page enter the following information for the first port in Table 2 Service Any unique identifier such as the Function listed in Table 2 Name Starting The Port listed in Table 2 or the starting value of the range Point listed in Table 2 Ending The Port listed in Table 2 or the ending value of the range Point listed in Table 2 Server IP The IP address that the NAT has assigned to your Address computer NetGear routers automatically pass TCP and UDP traffic through the same port You do not have to designate TCP or UDP when you open ports
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