I am not sure what you are trying to pickup as your command 100 register 08 is not sending calls to a overflow point or tafas bells. Let me know where you want the calls to go. Do you want it to automatically switch after a timeout or press the tafas key on the console and send directly?
As far as the extensions go, go to commmand 301-310 depending where ons cards are and see what cos your extensions are in, the go to that cos 121-129 and change register 3 bit "g" to a 1. If this is still not clear let me know.