Aastra OpenCom 131 User Guide - Page 100
Branch Link, Configurator, Network: Branch
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Configuration Examples Branch Link 8.5 Branch Link You can use the OpenCom 100 to interlink two LANs via ISDN. To do this, you configure two OpenCom 100 systems so that they can dial in to each other. In order for this to work, the two LANs must be configured for different IP address ranges (subnetworks). For at least one of the OpenCom 100 systems, change the prescribed address range for the LAN. In the Configurator, Network: Branch menu you can configure the dial-in settings. The OpenCom 100 will set up a connection whenever a IP data transfer to the other LAN is requested. Note that such a connection is only set up when specific requests are made. These can be for FTP file transfers, e-mails or downloading Web pages. Name resolution via broadcasts is not possible. If you wish to use the LAN-to-LAN link to access files and printers in the Windows network, you need an IP-enabled server that administers the name resolution for the Windows network. As the IP address range, you can select one of the 256 class C subnetworks designed for local LANs. Select a class C sub-network in the range from 192.168.0.0 to 192.168.255.0. OpenCom (IP=192.168.99.254, Net=192.168.99.0) Net S0 OpenCom (IP=192.168.11.254, Net=192.168.11.0) S0 Net PC 1 PC 2 PC 1 PC 2 Net Hub Net Net Hub Net The OpenCom 100 in a LAN-to-LAN link 98