Assigning a specific extension to a specific line button

[kent_tcb]

I would like to be able to assign multiple extensions to a eyeBeam client (we are using version 1.5.19.5), but have each extension light up a specific line button when called. So for example, Mary is assigned extension 110 and 111. When someone calls Mary at extension 110, line button 1 lights up. But when someone calls her at 111 button 2 lights up. I hope this makes sense. Thanks in advance!

Kent