D-Link DPH-80 Manual - Page 61
Using H.323 Protocol
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Using H.323 Protocol IP Phone Configuration Infrastructure Requirements Although the DPH-80 H.323 phone will work in any type of LAN network, a 100mbps, switched network is more suitable for providing good quality voice communications. H.323 phones need a Gate Keeper (GK) to provide the directory function required to make calls. The DPH-80 H.323 phone registers the assigned phone number with the server on power-up. However, the D-Link H.323 phone can work through the phone book without a H.323 GK. To operate properly, H.323 phones require a set of IP parameters for proper functioning such as an IP address, IP mask, gateway address, and DNS server address. These parameters can be configured either statically through a browser or dynamically through DHCP. A DHCP server in the local LAN is required to provide these parameters. The DPH-80 H.323 phone has many configurable parameters. These parameters can be configured through any Java-enabled Internet browser (like Netscape 6.2 or above, IE 5.0 or above). If your LAN network has a firewall and NAT, they should support H.323 for making and receiving calls from outside your LAN network. A TFTP server is required if you want to support remote software upgrades. Please check with your service provider for further information on upgrading your device. 61