XR0037
BRI (Basic Rate Interface) ISDN is a digital telephony interface (P/N XR0037) used to connect to the telephony provider, legacy PBX or ISDN telephone sets.
There are two basic configurations for each BRI ISDN telephony interface port – TE (Terminal) – connects to telephony provider and NT (Network) – connects to ISDN phones (requires power supply option) or legacy PBX (as PSTN ISDN trunks).