I've had trouble with the system where if the customer was talking on line 1 and a call comes in on line 2, the customer on the 924 x10 can't transmit. She can still hear. Several months ago I reset the 924 which resolved the trouble, did again today and he trouble remained.. For now I connected x16 in place of x10, calls are fine with x16. Looking in the manual I see an available range extensions. There's just has 8 digital ports. Could I renumber port 1 (x10) as x18 (first ext. if they had an expansion) then renumber port 7 (x16) as x10?

I think they have a service contract, don't know if we have any more 924s. When the purchasing manager is in I want to see if he'll go for giving them an Iwatsu VS or Adix. No voicemail which is good, we only have limited 4VMLs, VMIs etc. in stock.