Classe Audio CAM-200 User's Guide download pdf (Page 165)

Possible Network Configurations

7-3

Internet Problems

Possible Network Configurations

Look at each of the numbered subheadings below and on the next several pages. Find the one

that best applies to your networking equipment or configuration. The instructions under the

subheadings tell you how to configure the VP-200 and/or your network hardware to allow you to

make and receive videophone calls.

1- Local (Home) Router/Gateway

Because some ISPs charge an additional fee for multiple “Public” (also called “Static”) IP

addresses, you might want to buy and install a router for use on your home network. In some

cases, the Sorenson Trainer will have installed a Sorenson Router for you. The purpose of a

router is to “route” (direct) the appropriate data to all of the devices connected to it. Routers are

also capable of acting as firewalls to protect your network from the outside world. Although a

firewall gives your network added security, additional configuration of the router will be required

before you can make videophone calls with the VP-200.

Recommended Procedure

VP-200 Configuration: Select the Automatically obtain IP address checkbox on the

Network Address screen and then restart the Sorenson VP-200. After the Sorenson VP-200

restarts and receives an IP address from the router, look for the IP address that was assigned to

the videophone by calling up the Network Address screen. This address is a “Private” IP

address.

Router Configuration: Enter the IP address assigned to the VP-200 into the “DMZ” area of the

router’s configuration interface. The VP-200 is a perfect use for a DMZ because, unlike a PC, it

does not present the possibility of another person “hacking in” or passing on a virus. You can

find the DMZ area in the “Advanced Settings” section of most routers’ configuration interfaces.

Optional Procedure for Router Configuration: If your router does not have a DMZ option, or if

you do not want to use the option for some reason (perhaps, it’s too complicated), it is also

possible for you to configure the router to manually forward the necessary ports for H.323

communications. The router’s “Port-Forwarding” capabilities are usually found in the “Advanced

Settings” section of the router’s configuration interface. The VP-200 requires that the following

ports be forwarded (inbound and outbound) to the VP-200’s assigned (private) IP address:

Table 6-1: Port-Forwarding Ports

Inbound Ports Outbound Ports

• Ports 15328-15348 (TCP & UDP)

• Port 1720 (TCP & UDP)

• Ports 1024-65535 (TCP & UDP)

• Port 21 (FTP)

• Port 80 (HTTP)

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Classe Audio CAM-200 User's Guide Page 165