Chapter 5 Registering Nortel 20XX IP telephones 45BCM50 IP Telephone Installation and Configuration GuideTo access the local configuration menu on a 200X IP telephone1 Restart the telephone by disconnecting the power, then reconnecting the power.After about four seconds, the top light flashes and NORTEL NETWORKS appears on the screen.2 When the greeting appears, immediately, and quickly, press the four display buttons, oneat a time, from left to right. These buttons are located directly under the display.Press the button sequence within 1.5 seconds or the telephone does not enterconfiguration mode.• If Manual Cfg DHCP(0 no, 1 yes) appears on the screen, you successfully accessedthe configuration mode.• If any other message appears, disconnect, then reconnect the power, and try to access theconfiguration mode again.3 Enter the network parameters, as prompted.a As each parameter prompt appears, use the keypad to define values.b Use the * key to enter the period in the IP addresses.c Press OK to move forward.d The following table describes the values for each display parameter.Table 10 IP telephone server configurations (Sheet 1 of 2)Field Value DescriptionDHCP 0 or 1 Enter 0 if your network is not using a DHCP server to dispenseIP addresses. (Partial DHCP)Enter 1 if your network does use a DHCP server.If you choose to use a DHCP server rather than allocating staticIP addresses for the IP telephones, skip the remainder of thissection.If DHCP = 0SET IP The set IP must be a valid and unused IP address on thenetwork to which the telephone is connected.NETMASK address>This is the subnet mask. This setting is critical for locating thesystem you want to connect to.Display buttons