[GreenKeys] Need Information

[Norm]

I'm looking for some answers on how to insert call sign ID  when transmitting RTTY. My Hal 5000 modem has a CW ID pin on the plug-in socket in back of unit, but in the normal idle state modem unit is sending 2125 Hz and when I use a key one side to CW ID pin other side of key to return grd of unit, and operate key it sends out the 2025 HZ tone.  My next question I have, does the ID have to be CW or can I use  the TTY to identify my call sign.
Any Information would be helpful to me.    
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