The ISDN to IP Migration for Videoconferencing
Source: TANDBERG, now part of Cisco
Since the release of IP-capable videoconferencing solutions in the mid-1990s, the percentage of video calls hosted over IP networks has continued to grow. In addition, virtually all video systems today include IP network capability, while only a limited percentage support ISDN. For some, the justification for migrating from ISDN to IP for videoconferencing was purely financial as it allowed companies to enjoy a pay-one-price cost structure for unlimited videoconferencing usage. For many others, however, it was the soft benefits of running videoconferencing over IP, such as enhanced reliability and manageability, tighter security, and an improved user experience that prompted the shift. This white paper provides insight into the pros and cons of the four most common network architectures in use today for videoconferencing.