802.1x (EAP) Port-based network access control 87DuplexIn the Network menu, Auto Negotiation mode is the default setting forinitial startup. Typically, the IP Phone 1120E is connected to a networkthat supports Auto Negotiation, and the IP Phone 1120E selects the bestspeed and duplex mode available. There is no intervention required undernormal operation.ATTENTIONNortel recommends that Auto Negotiation mode is used on the network and theIP Phone 1120E. Use Full Duplex mode only when the entire network is runningin Full Duplex mode. Otherwise, a duplex mismatch results.Note: Changing the speed, or the duplex mode, or both on the IPPhone 1120E changes both the LAN Ethernet port and PC EthernetPort interfaces.If the IP Phone is connected to a network configured for Full Duplex modeonly, the IP Phone 1120E cannot automatically negotiate the properconfiguration. Therefore, in this instance, to allow the IP Phone 1120Eto work at the optimum speed and duplex mode, Full Duplex mode mustbe enabled.Ignore GARPGratuitous Address Resolution Protocol (GARP) Protection prevents the IPPhone 1120E with SIP Firmware from GARP spoof attacks on the network.The IP Phone 1120E with SIP Firmware provides the ability to ignore GARPmessages.ProvisioningThe next four menu items apply to configuring the provisioning parameters.Server URLEnter the numeric IP address, name, or URL of the provisioning server inthe Server URL box.ProtocolSelect the protocol used to access the provisioning server, either TFTP,FTP, or HTTP.Device IDEnter the Device ID (User ID) used by the provisioning server forauthentication of the IP Phone 1120E with SIP Firmware.SIP Firmware Release 1.1 for IP Phone 1120E AdministrationNN43112-300 02.03 Standard27 May 2008Copyright © 2008, Nortel Networks.
