Supplemental information about devices |
4.1 |
Network | |
This section describes about supplemental information about network. IP address: The IP address required for using the KNS is global IP when making a connection via WAN. In this case, the host PC (transmission side) and a remote PC (operation side) must have one global IP for each own. The user can use the name solved by the DNS if he/she can obtain the global IP. The network deems to be operated by opening the port for external communication even if a global IP is assigned to the WAN and a private IP is assigned to LAN when using a router. The user can use a private IP in LAN. (Network environment with a router is not supported by KENWOOD.) Port: The user must not only assign an address to TCP/IP but also open the port to be used. Although opening a port is not necessary for the network environment in which the modem is directly connected to a PC, the user must open the port normally closed in the personal network when using a network with the firewall function, such as a router. With the ARCP-480 and ARHP-10, the user must open the port 50000 (default) in order to perform command communication. Other ports are required for making voice communication. Refer to the help texts for details. Following is the example to open a port when using a router compliant with Microsoft® NetMeeting®. Only control: Open the port 50000 (default). Port: 50000 Protocol: TCP Direction: Transmission/reception Open the following port when using VoIP at the same time. Port: 1720 TCP direction: Transmission/reception This is an example showing how to open a port when a router supports Microsoft® NetMeeting®. The user may have to open other ports due to a router's setting even if the router is compliant with Microsoft® NetMeeting®. Refer to "7.2 BB router setting example" for other example. High-speed modem: Although Yahoo!BB and Flet's ADSL service providers offers their own modems which do not have the router function, other providers, such as e-Access and ACCA, provide a modem with the router function. Even if the router is built-in the modem, the user must open the port required for using the KNS. When the user cannot open a port, he/she can bridge a router. However, with this method, the security function of the network cannot be secured. (example of connecting to the service available in Japan) The user can use the KNS by opening a port with self-responsibility even if he/she has a mode with router function. Network for multiple dwelling houses:Available in Japan? The LAN for multiple dwelling houses, such as condominiums, are getting penetrated. As for this system, the network connects to Internet with a fiber-optic cable until it is divided into each house with LAN. Since the router function is used in this network, the user must open ports. Although the KNS likely becomes available by opening H.323 and the port for command communication, the KNS may not be available in some cases. Router: Although the network environment with a router is not supported by KENWOOD, we checked how much the KNS works in the network environment with a router. Refer to Link. The KNS may work if a router has a function called "DMZ" or "Virtual computer" and a function called "IP masquerading" or "NAT" and the user can configure these functions. Some routers do not require complicated setting, but the most of routers require the user to make complicated setting. ISP: Although the most of ISPs open all communication ports required for the KNS, occasionally the ports necessary for KNS are closed. In this case, the user must solve the problem by himself/herself by asking his/her ISP. Connection speed: We recommend the user to use 500 kbps or higher broadband Internet connection since long delay may occur due to the telephone line speed such as the modem. (we recommend the user to use broadband Internet connection even though we do not specify certain connection speed.) LAN adapter: KNS must work with a typical home LAN. Performance of the NIC, including all available types of PCI, PCCARD and USB, was tested. | |