🚀 go-pugleaf

If you have a Bell telephone, you can just unscrew the mouthpiece
of your handset and tie the two output wires (cut and strip) to
the two on the microphone.  I would recommend keeping the output 
volume very low. I think that you can run the two wires from the
earpiece right into the mic of the soundblaster as well. You may
have to throw a resistor or pot in there.
If your phone isn't Bell or easy to unscrew, there are many cheap
phones out for $5 or you can subscribe to Time and cancel after the
first issue and get the phone for free.:>
                                            Rolan Yang
                                         Wasteland Engineer