On 2019 Aug 04 21:38:22, you wrote to Terry Roati:

 RW> 3141 is only for OS/2 users runing SIO and its VMODEM.EXE driver for 8-bit
 RW> VMODEM-TO-VMODEM communication.

small clarification/correction: 3141 is the IANA assigned port number for
the vmodem protocol no matter what software implements the protocol or what
OS it is used on... the vmodem protocol is a slightly modified form of the
telnet protocol ;)

)\/(ark

Once men turned their thinking over to machines in the hope that this would
set them free. But that only permitted other men with machines to enslave
them.
... One can't proceed from the informal to the formal by formal means.
---