[Asterisk-Users] ADSI Input from 480 keypad?

[Jimmy]

Setup:
Asterisk 1.0.5
Aastra 480 analog ADSI phone


Is it possible to program a Aastra 480 phone to accept input from the 
keypad in response to a screen prompt?

For example,  the screen says

Enter Password
And Press Ok

I can make the text appear, I can create a softkey that says "Ok",  I
can get a prompt for the input, and the text show up when I type on the
keypad.  But how do I end the input stream, and send the input on it's
way? (i.e. press the "enter" key on a computer)

Thanks for any help.