How to setup Auto-Connect on the Digi Network Terminal Server II

This document is a simple guide as to how set up a port on a Digi Portserver II Network Terminal Server to auto-connect to a host using 'telnet'. It also describes how this auto-connection can take effect, without manual intervention from a terminal keyboard. Please be aware, that if a disconnect is issued to the mvBase line using this port from mvBase, then the connection will terminate. To reconnect the connection, instead of having to stop and restart the mvBase workstation, manual intervention is required, in the form of a terminal power reset, disconnection/reconnection of the cable between the device and the Digi, or any input from a keyboard connected to the terminal on this port.

This is achieved by defining the Digi port type to be an 'Inbound Modem' even when the device being attached is a Terminal (or some other DTE-like device) and not a modem (a DCE device).

We first must set up a user that will be the telnet user name from the point of view of the telnet server on the host system:

• Set user name=dts2

Each port on the Digi needs to have a user name and user id (UID) specified for it. These may be unique or they may be all the same. When connecting to an mvBase Telnet server the UID is ignored, but the User Name is displayed as the 'client name'.

Now set the port configuration information:

• Set port range=2 uid=2 auto=on dest=hostipaddr dport=tcpportno dev=min

And finally the flow control information to allow the DCD signal from the modem to the Digi to be detected correctly:

• Set flow range=2 altpin=on

Below is the Recommended Terminal Cabling:

The recommended cable type is CAT 5 grade 8 wire cable, using RJ45 connectors.