The local telco here (BELL) says the same thing when trying to sell a system. They say the 0x32's, 8X24's are all discontinued and no longer supported by Nortel and therefore u must change ure system to a BCM.
Personally, it makes me look better when I can supply all the parts / equipment that the telco says can't be gotten. Annoying having to explain to the customer though that the telco's more or less lieing to them.