Hello,

I don't know the exact reason why MODEM_DEFAULT_PORT is set to 23, but I wanted to stress the fact that this is among the worst possible choices. Not only is port 23 reserved to telnet (I suppose this was somehow the reason for the choice), which is a bad thing itself, ports below 1024 cannot be bind()ed by anyone but the superuser on UNIX systems.

I guess this ia all well known and I suppose the answer is "just use another port then." However there are games in which you might not be able to enter a colon in the ATDT field (for example I haven't managed to do so in Heroes of Might and Magic), and anyway default values should be sensible values suitable for almost everyone, which 23 certainly isn't.

Therefore I'd suggest a change.

Regards,