Branch Link - Aastra OpenCom 100 Series Mounting And Commissioning User Manual

Configuration Examples

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 pre-
scribed address range for the LAN.
OpenCom OpenCom
(IP=192.168.99.254, (IP=192.168.11.254,
Net=192.168.99.0) Net=192.168.11.0)
Net S S Net
0 0
PC 1 PC 2 PC 1 PC 2
Net Hub Net Net Hub Net
The OpenCom 100 in a LAN-to-LAN link
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.
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