T-1 and T-3 Access Lines
T-1 and T-3 Leased Internet Access Lines
T-1 is a leased Internet access service and network-connect technology best suited for large networks where 20 or more users are accessing the Internet at the same time. T-1 is a dedicated phone connection and is about 10 times as fast as Integrated Services Digital Network (ISDN) and has speeds up to about 1.54 Mbps. As many as 24 users, each using 64 Kbps, can use the T-1 service simultaneously. It is an "always on" service.
T-1 can be used to connect a Private Branch Exchange (PBX) to the telephone company's central office (CO). T-1 is frequently used to connect remote Local-area Networks (LANs)
Fractional T-1 . If T-1 seems a good solution for the business, but there are less than 20 users, a portion of a T-1 line may be leased. This keeps expenses down and still gives a premium service.
T-3 is a high-end leased service used by many medium-to-large sized organizations for accessing the Internet and connecting a network to it. A T-3 line can transmit data at up to 44 Mbps. That's extremely fast! It's the equivalent of 28 T-1 lines. As many as 672 users can use the service simultaneously while working at 64 Kbps. T-3 is an excellent solution for businesses with large calling volumes (i.e., calling centers). It is an "always on" service.
T-3 can be used to connect a Private Branch Exchange (PBX) to the telephone company's central office (CO). T-3 is also used to link remote Local-area Networks (LANs).
Fractional T-3. If T-3 is a good solution for a business, but the full T-3 line is not needed, a portion can be leased. This keeps expenses down, allows many users and still gives a premium service.
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