Hayes Microcomputer Products DIVA T/A ISDN - Manual (Page 79)

DIVA T/A ISDN Modem User’s Guide 79
For Windows 95/98 only. If you use “~” or “&” to separate the
Phone-Numbers, deselect the “Use Country and area code” parameter
on the Properties tab of Dial-Up Networking. Manually enter the
Country Code, Area Code, and PBX Prefix (if required) for both
numbers.
If both B-channels connect to the same number, the number need only
be entered once.
Contact your Internet Service Provider (ISP) if you are not sure
whether you need one or two remote numbers.