Reference Guide for the Model RT328 and Model RH348 ISDN Routers

To make a Telnet connection from the LAN, you must know which of the two LAN interfaces (UTP or AUI) is enabled and make sure that the interface is connected to the LAN. The factory default is the UTP interface. You must also set up your workstation to be able to reach the IP address of the router by doing one of the following:

•Set your workstation to an IP address on the currently programmed subnet of the router.

•Add a route to the static routing table of the workstation to indicate that the router can be reached through the local LAN port.

Note: If you change the LAN IP address of the router while connected through Telnet, you lose the Telnet session. You must then open a new Telnet connection to the new IP

address and log in again. If you change the selected LAN interface, you also lose the session and must change the hardware connection to the other Ethernet port.

When using Telnet, consider the following:

•Single administrator

To prevent confusion and discrepancy on the configuration, the router allows only one terminal connection at any time. The router also gives priority to the RS-232 connection over Telnet. If you have already connected to the router through Telnet, you will be logged out if another user then connects through the RS-232 cable. You can use a Telnet connection only after the other administrator has disconnected.

•System timeout

When you are connected to the router through Telnet, there is a system timeout of 5 minutes (300 seconds). If you are not configuring the device and leave it inactive for this timeout period, then the router automatically disconnects you.

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Router Installation and Connection