Dave
I dont know if it was you or somebody else who broke the cardinal rule on Toshiba? Dont mess with program 05 the Flexible Access Code Numbering. (i.e. ext 100) This was a program that even in the Tech Training class the instructor said dont mess with it because somewhere down the road its going to get ya. Unless its a 424i with a E/F processor.
Anyway to remove the ID code icm #65691 redial and icm #65792 redial.
Did you change anything in program 31 for the voicemail ports?
Have to put a testset on the port to see if your sending dtmf to the voicemail and its not hearing it? it could be a rederox problem maybe.