On 01/09/18, Tony Langdon said the following...
 
 TL> I had no problems with Telix, getting it to store a hostname and play its
 TL> little connection tune.

If it's short enough. Telix has a 17-character limit in the phone book so
longer hostnames or IP+port combinations won't fit.

 LT> I was testing DOSBox, and sadly discovered that while the virtual modem
 LT> works on a Windows PC, the modem functionality seems to be crippled on all
 LT> of the Android ports that I've tried.   

Well that's a shame. I wonder why that was omitted. It works in the Linux port
and Android is very closely related...
I have DosBox Turbo on some of my devices so I opened up the .conf by hand.
Sure enough the serial stanza is completely absent, and even if you add it in
manually the application doesn't react to it at all.

--- Mystic BBS v1.12 A38 2018/01/01 (Linux/64)
 * Origin: Subcarrier BBS (1:249/400)