London-based CallNet Plc is offering business and home Net users rock bottom prices for twin-channel, 128kpbs ISDN connections. The deal includes free ISDN installation by BT-approved engineers, a free external ISDN terminal adapter and up to 37 hours free calls per month in a deal which could save some users hundreds of pounds. At £27.25 a month for line rental (not including the bundle of free calls) CallNet Digital is on a par with BT Home Highway and Business Highway. Its per-minute call charges are also just a smidgen under those charged by BT. The snag is that like BT's ISDN offerings, users are tied in to the contract for three years. And with the prospect of broadband ADSL services just around the corner, that may be just too much to bear. ®