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DS1 lines are carried through two twisted pairs of copper wires. Virtually, all residences and businesses currently have two pairs of copper wires running to them. DS1 lines are capable of delivering 1.54 Mbps simultaneously in both directions, one direction for each pair of copper lines. Because DS1 service is repeater driven (signal is digitally reestablished about every 6000 feet), it is available several miles from telephone central offices. For this reason, DS1 can be available to virtually all businesses in the US. DS1 lines are dedicated, in that they are always connected, and are also extremely stable. Most reputable providers include service level agreements which guarantee the reliability of the DS1s they offer. Although, each DS1 circuit has traditionally been capable of providing a maximum 24 phone lines, due to advancement in coding techniques, some are now capable of supplying up to 36 phone lines.
There are several types of DS1. These include: full DS1 (1.54 Mbps), fractional (commonly 128 Kbps to 756 Kbps), burstable (less expensive for companies which normally do not need a full DS1, but at times due to peak work loads, need to burst to full DS1 bandwidth), integrated (one DS1 line comprised of any combination the types of DS1 listed here), channelized DS1 (a type of integrated DS1), point-to-point (direct and constant DS1 connection between to locations), data (internet), voice (telephone), local (local phone service), pri (voice service which includes many added features such as caller ID), and frame relay (bandwidth from a shared network). Each of these types of DS1 has advantages over the others, depending on the specific needs of your company. Also, the availability of each is based on the offerings of each DS1 provider and the geographic location. To check availability and comparative pricing in real-time for your business, please use the pricing tool at the top of this page.
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