A basic rate interface is an ISDN subscriber line which provides two B channels and one D channel.

Bit rate interface is another name for basic rate interface, or BRI. BRI is used in ISDN configurations for voice-grade telephone operations.

It stands for Basic Rate Interface. In the Integrated Services Digital Network (ISDN), there are two levels of service: the Basic Rate Interface (BRI), intended for the home and small enterprise, and the Primary Rate Interface (PRI), for larger users.

It can do both. In order to use VoIP you have to get a PRI card, which cost used about US$699 (model no. RPTU PRI).

An interface in visual basic is any visual thing. For example, when you're making your forms, that's an interface.