Shanghai New Rock Technologies Inc. Page21/752 Parameter Setting2.1 Login to Web-based Utility2.1.1 Obtain OM IP AddressOM10 and OM20 start DHCP service by default, and automatically obtain an IP address on the LAN;users can use the factory default IP address if it is unable to be obtained (e.g. when connected directlywith a computer).OM100 and OM200 use a static IP address by default.Table 2-1 Default IP Address of OMType Default DHCP Service Default IP AddressOM10 Enabled 192.168.2.218OM20 Enabled 192.168.2.228OM100 Disabled 192.168.2.240OM200 Disabled 192.168.2.240z DHCP Used in NetworkUsers can dial "# #”to obtain the current IP address of the device and version information offirmware using the telephone connected to a FXS port after the equipment is powered on.If the OM is only configured with FXO ports for analog trunks without FXS ports (e.g.OM10-4FXO or OM20-24FXO), users can dial into the OM by connecting a PBX extension lineor CO line to a FXO port, and press "# #" to obtaining the current IP address of the device andversion information of firmware.z Fixed IP Address Used¾ If the DHCP service on the network is not available or the OM is directly connected with acomputer, the OM will use the factory default IP address.¾ A user could fail to log in with the default IP address if the IP address of user’s computerand the default OM IP address are not at the same network segment. It is recommended thatthe IP address of user's computer is changed to be identical with the same network segment.For example, if the OM IP address is 192.168.2.240, it is recommended to set thecomputer’s IP address to any address at the network segment of 192.168.2.XXX.z PPPoE UsedIn “Basic Configuration> Network Configuration”, the OM will automatically obtain the WANaddress returned by access network after PPPoE service is started and user name and passwordare set. Users can dial “# #”on the OM to receive the IP address and version information offirmware.z IP Address Port Configuration of EquipmentIt is typically required to fill in the port when using DDNS since the router possibly maps to adifferent port in port mapping.Normally, it is unnecessary to fill in the port value.