What do ISDN lines cost?
As in any telephone line, there are two charges. One for local access and another for the transport over the network. Local access typically costs 40 Euro per month per 128k ISDN circuit. Therefore to achieve 384k quality video conferencing, a company would typically spend 120 Euro per month. The transport of ISDN traffic typically costs substantially more than a phone call due to the requirement that the network is digital vs. analog as is used for a phone call. ISDN transport costs have dropped in recent years whereby a typical Fortune 1000 size company is paying about 60 Euro per hour for a 384k domestic ISDN call. International rates are substantially higher and vary by country.
