4.3 Programming the Virtual Extension Card and IPTelephones4.3.1 Assigning the IP Addressing InformationThe IP address of an IP telephone, the subnet mask address, the default gateway address, and the IP addressof the IPCMPR card (PBX IP address) must be assigned to the IP telephone before it can be used on thenetwork. These IP addressing information can be assigned in the following ways;NoteFor details for the KX-NT400, refer to the Operating Instructions of the KX-NT400.For IP-PTs1. Using a DHCP server when the IP-PT is on the same LAN with the PBXThe DHCP server automatically assigns the IP address of the IP-PT, the subnet mask address, and thedefault gateway address to the IP-PT.The PBX IP address can also be assigned automatically to the IP-PT in process of being registered to thePBX. For details about registering the IP-PT, refer to "4.3.2 Registering IP Telephones".2. Using a DHCP server when the IP-PT is on the remote office LANWhile the DHCP server automatically assigns the IP address of the IP-PT, the subnet mask address, andthe default gateway address to the IP-PT, only the PBX IP address must be assigned manually.Follow the procedure below to assign the PBX IP address.36 Getting Started4.3.1 Assigning the IP Addressing Information