Review the port settings. Telnet to the IP address of the unit and login as root:

#> set port ra=*

Any port that is going to have a RealPort device attached, should have:

dev - Needs to be set to rp or prn.
auto - Needs to be set to off

NOTE: You can use the Web Interface to verify the device type as well.

#> set flow ra=*

Any port that is going to have a RealPort device attached, should have all signals off except ixon and ixoff (which can be on or off) and altpin (which should be off for a 10 wire Digi cables and on for anything else).

NOTE: You can use the Web Interface to verify the port setting as well.

#> set auth

Will show settings like the following:

Ind IPaddr          Mask            RealPort  Login  Unrestricted
1   0.0.0.0         0.0.0.0         oooo-ooo -------- oooooooo
                                    o-oooooo -------- oooooooo

* Realport should show the lower case letter o for all RealPort ports. The ports are indicated across in groups of eight -- In the example above, all ports are set correctly in the RealPort column except ports 5 and 10 (which are possibly being used for non-RealPort connections as indicated by the hyphen (-) in position 5 and 10).

NOTE: This can only be verified in the command line.

Check for stuck processes:

At the Digi Device/Terminal Server root command prompt type:

#> who

* If a process (RealPort or otherwise) is running on the port try killing it, type:

#> kill tty=[port_number]

If this does not work, unplug the serial device and reboot the Digi Device/Terminal Server.

* Check the LEDs on the port to see if OFC is on this can be monitored using our DPA Remote software available for download from our web-site for a variety of operating systems:

http://www.digi.com/support/productdetail?pid=2247&type=utilities