Why not? A number of different approaches for CW over IP exist.
An early implementation has been the CWCom protocol,
which has been the basis for Morse KOB, a ready-to-use software.
Both chat programs have been written for CW exclusively and are compatible. An alternative implementation in C exists as well as a port to the ATMEL AVR Microcontroller.
for Java (i.e. [librxtxSerial.jnilib](http://blog.brianhemeryck.me/installing-rxtx-on-mac-os-mountain-lion/) on OSX) it is even possible to connect to external hardware.
A current list of servers if provided on the [MorseKOB Website](http://mtc-kob.dyndns.org).
## Hardware interface options
A good description on how to build differnt interfaces (telegraph key, sounder or both) is given on the [MorseKOB Website](http://kob.sdf.org/morsekob/interface.htm). Landline telegraphs use "closed circuits" for communications; if you have built one at home, you may also use the [loop interface](http://kob.sdf.org/morsekob/docs/loopinterface.pdf).
> I have been using cwcom to practice sending morsecode, unfortunately my main computer at home is running openbsd and it has gotten harder to gain access to a reliable MS Windows machine. So I wrote my own client that works on openbsd.
> This is written in C and although not tested it should compile under other OS. If any one wants to try it and send me feedback. you can download version 0.01 here http://fernan.bitbucket.org/irmc.tgz
> Les Kerr of https://home.comcast.net/~morsekob/ has been very patient in answering my questions regarding the cwcom protocol and setting up a test server during debugging.
>
> There are few difference between this and the official cwcom client
> 1. It is a command line tool
> 2. It does not send the characters of the message to the receivers screen.
> 3. It does not translate CW for you. You can try fldigi if you just want see the transmission.
> 4. Tone pitch is currently hard coded to 650Hz
> 5. It does not have a way to show you who is listening.
>
> Bugs:
> There are a few that I am working on right now, but feel free to send me feedback if you get a chance to try it out.
A number of different approaches for CW over IP exist. An early implementation has been the CWCom protocol<ref>CWCom, John Samin (VK1EME): http://www.mrx.com.au/d_cwcom.htm</ref>, which has been the basis for Morse KOB<ref>Morse KOB, Less Kerr: http://kob.sdf.org/morsekob/</ref><ref>Morse KOB 4.0, Less Kerr: https://sites.google.com/site/morsekob/</ref>, a ready-to-use software. Both chat programs have been written for CW exclusively and are compatible<ref>Relay server for CW communicator and morse KOB: http://morsecode.dc3.com:7890</ref><ref>Sources for the Relay Server: http://sourceforge.net/projects/morse-rss-news/</ref>. An alternative implementation in C exists<ref>IRMC (Morse KOB): http://fernski.blogspot.de/2013/03/internet-relay-morsecode.html</ref> as well as a port to the ATMEL AVR Microcontroller<ref>MorseKOB for AT Mega: http://fernski.blogspot.de/2013/05/sending-morsecode-via-atmega.html</ref>. Besides a variety of other approaches exist, for example an IRC plugin<ref>CWirc, Pierre-Philippe Coupard: http://myspace.voo.be/pcoupard/cwirc/</ref>, a JavaScript implementation<ref>Burak Kanber: http://morsecode.me</ref>, a bandwidth-eating UDP implementation<ref>Morse over IP, Hans Liss: http://hans.liss.pp.se/node/343</ref>, a chat for iOS<ref>CW with me (iOS), Nick Garner: http://pignology.net/cwwithme.html</ref> or a modulated CW over IP using Mumble<ref>iCW: https://sites.google.com/site/icwoip/</ref>.