ISDN Purchasing Advice — Louis Lee <[email protected]> offers some advice from his experience as a major ISP network engineer in purchasing ISDN equipment for companies.
Try to obtain demo models of the routers for which you are shopping. You’re going to live with this router a long time, so make sure you’re comfortable with its configuration interface.
Ask your ISP’s support team about which model to buy. Most technical support representatives can be very frank about equipment they’ve encountered. At the very least, they can tell you what has been known to work well with their equipment.
Consider purchasing the ISDN router with administrative support from your ISP if you are willing to assume a small security risk.