5.1 Information about Using an IP NetworkThis section explains common IP network information necessary for setting up networks.5.1.1 Using a VoIP Network with the Control BoxThis Control Box supports SIP (Session Initiation Protocol) devices (Lobby Station, Door Station, and RoomMonitor) and SIP phones for communication on a Voice over Internet Protocol (VoIP) network.Network ParametersYou will need to have the following IP addressing and QoS information to establish VoIP communication onyour network. This information is typically supplied by a network administrator.Consult your network administrator for specific values.Parameter DescriptionIP telephone IP Address Identifies the location of IP telephones on the network. Each IPtelephone must have a unique IP address.Subnet Mask AddressDefines which digits of an IP address are used for the networkaddress and the host address at each network location. The IPaddresses of the IP telephones and the Control Box must fall withinthe same subnet as that of the default gateway (e.g., router) of theLAN.Default Gateway AddressIdentifies the IP address of the primary gateway (typically a routeror similar device) that exchanges IP packets with the othergateways on the VoIP network.IP Address Identifies the location of the Control Box in the network during VoIPcommunications.VLAN IDIdentifies the ID of the logical segment within the corporate LAN,through which voice packets from IP telephones travel. For details,refer to "5.1.3 VLAN (Virtual LAN)".5.1.2 DHCP (Dynamic Host Configuration Protocol) ServerTo establish communication over a VoIP network, IP addresses must be assigned to IP telephones and theControl Box to identify their locations on the network. While these addresses can be assigned manually, it isalso possible to use a DHCP server to automatically assign IP address information. The Control Box has aDHCP Server feature. Therefore, the Control Box can act as a DHCP server or DHCP client depending onits settings. When the Control Box’s DHCP Server feature is enabled, it allows you to centrally manage andautomate the assignment of IP addresses with Web Maintenance Console. For details, refer to "16.2.1Network Service—[2-1] Server Feature—DHCP(LAN)" in the PC Programming Manual.Assign IP addressinformation to an IPtelephoneWhen the mother board isconnected to the network When an IP telephone isconnected to the networkRequest IP addressinformation1Assign IP addressinformation to theDSP card2Request IP addressinformation34Control Box(DHCP Serverfeature enabled)DSP CardIP Telephone5.1 Information about Using an IP Network52 Installation Manual