Cannot open two simultaneous telnet sessions on Digi Connect SP Python ?

I have a Digi Connect SP Python. I’m trying to access the serial port simultaneously with two applications (telnet) running on two remote computers.
Only the first session is successful, the second one is closed mediately. How can I have multiple applications accessing the serial data?

I don’t see any issues opening two telnet session on a Digi Connect SP device. In fact I opened 4 session without any issues.

You my want to open a support case to further troubleshoot your issue.