Integrated Services Digital Network (ISDN)

ISDN connections are based upon interface type and can vary from a Basic Rate Interface (BRI) to a Primary Rate Interface (PRI) that provide up to 512Kbps and 1.4 Mbps respectively. As circuit-switching technology has evolved, NISN has migrated the majority of its Video Teleconferencing System (ViTS) facilities to PRI interfaces. It is recommended that any new service implementation using ISDN be implemented with a PRI connection.

Regardless of interface type, all Multipoint conference calls are limited to a maximum of 768Kbps.


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