3.3 Configuring Domain Name System (DNS) DataGetting Started 273.3 Configuring Domain Name System (DNS)DataThe function of a DNS in a VoIP network is to provide telephone number-to-IP Addresstranslations *1. The VoIP Gateway Card has internal DNS capabilities that can contain amaximum of 511 units in the network. DNS is to be owned jointly by all units in the network.Therefore, whenever the DNS is changed, you must update every unit with the latest DNS;otherwise the VoIP communication cannot be established.For example numbering plan, refer to "1.2 Network Devices and Numbering Plan".3.3.1 Creating DNS DataThe MCS permits DNS data to be entered and edited while off-line. Transfer the data over thenetwork to all units only after it is fully configured (instructions will be given in "3.5 TransferringData to the Units").*1 IP address-to-telephone number translation can also be handled by using an H.323 Gatekeeper device. To configure Gatekeeperdevices, refer to the manufacturer's documentation. This manual focuses on the method using the VoIP Gateway Card internal DNScapabilities.1. a. Click "Main" in the Groups WindowPane.b. Click "Tools" "DNS (static transfer)""Edit" from the menu bar.2. In the "Configure DNS setting" dialogue box,click [Add].3. a. Type the Terminal number, Remainingdigits, and Comment.Example for Los Angels extensions (200to 299):•Terminal Number: 352 (i.e., PBXOffice Code + Extension startingdigit)•Remaining digits: 2 (i.e., 00 to 99)b. Under "Unit list", click the desired unit.c. Click [->>] to move the selected unit tothe "Selected unit" area.d. Click [OK].