ISDN DEVICES

Like last year, D-Link wins this time. But unlike GVC, which was the runner-up last time, ZyXel comes in second. 3Com just fails to make the
grade.

In current usage also, D-Link tops, followed by ZyXel. Incidentally, this turns out to be a category displaying very high levels
of brand loyalty. And D-Link seems to be the only brand of consequence in the non-metros.