Well first I would:
LD 20 <enter>
prt <enter>
dnb (extension of the phone you don't want to ring to)
It will give a TN so do another
prt
tnb
<TN number the system printed in the first step>
Toward the bottom of the print-out you will see Key 0 and it will likely be setup as a MCR.
Null that key by doing:
ld 20
chg
<phone type> 2008, 2216, 3904, 3905, 1140, 1150, etc.
Then enter thru all the prompts until you reach Key
You will enter 0 nul and enter will complete the change. You can then follow the same process again and when you reach Key 0 you type: SCR <extension>
You can find a new extension for your phone (since you will want a new extension assigned) by doing a:
ld 20
prt
ludn
Then find a number listed that is in your current extension ranges. If you need more help please post
