It is hardly ever used nowadays. I only ever go near it to test a modem if I have a problem. The setting for 7 is certainly there though. I can only think that the modem is re-setting it as you suggest. It probably needs 8 to dial out. t is not possible to alter this sort of option in the modem settings, they are usually controlled by the program using the modem, in this case Hyperterminal. Sorry I can't be of any more help.