We have a range of extension 800 -850 which can be dial directly from an external number ie 672800 gets you extension 800 and so on but numbers 850 -899 can not if you dial their number (i.e. 672888) you go to the main switch board number. We had BT in and they changed somthing on the meridian and now 889 - 899 now can be dialed from external. Anybody know were I need to look.
Gary
Gary