T-1's T-1s are the backbone of digital service today. A T-1 is a standards-based transmission format. It processes voice or data digital signals over telephone facilities. Many businesses may use a T-1 to connect their PBX system to the public switched network to bridging, or routing between LAN networks, or as transmission devices between microwave stations. T-1s are popular for several reasons. One being that a T-1's circuit size. It can …showed first 75 words of 787 total…

…showed last 75 words of 787 total…service unit, DACS, host computers, bridges, routers, gateways, repeaters, and signal transfer points. T-1s are vital to world of telephony. They eliminate the middle ground for many different telephone applications. T-1s are very versatile, they may carry analog signals, utilized for voice or data, can be configured for ISDN service, and can also carry video signals. A T-1 is excellent for providing wide band telephony which may make it obsolete in the future.