The Quadro E1/T1 connects to an traditional enterprise PBX or directly to a high capacity, usually fiber optic T1 (North America and Japan) or E1 (the rest of the world) from the PSTN telephone network. Its primary function is to bridge a portion of traffic of an incumbent proprietary PBX to the Internet.

A Quadro E1/T1 comes equipped with one FXS port for connection of a standard analog telephone or fax machine. In addition, there is one software configurable E1/T1 voice port. Your voice and data traffic are routed through the WAN port to the Internet.

Your company can make as many as 30 simultaneous SIP VoIP calls through a single Quadro E1/T1. The Quadro E1/T1 integrates PBX, security and traffic management functions and supports most signaling protocols including R2, CAS, and CCS (PRI).