| It is helpful to know that a DS3 connection is | | | | according to the rate and format of the signal and |
| comprised up of two monthly charges. One is the | | | | the equipment providing the signals (T). DS and T |
| local loop and the port charge. The local loop charge | | | | designations are used synonymously. Therefore, DS1 |
| is the cost of the circuit provided by the Local | | | | means T1, and DS3 implies T3. In addition, DS3 |
| Exchange Carrier (LEC) that allows DS3 access into | | | | circuits provide businesses and Internet Service |
| the carrier's network. The loop charge is based on | | | | Providers (ISPs) with up to 45 Mb/s of dedicated |
| the distance from the customer's location to the | | | | Internet connectivity. This is an ideal solution for |
| edge of the carrier's network; the farther the | | | | users who have outgrown their T1 connections and |
| customer is from the network, the more the loop will | | | | are in search of unlimited, high-capacity access. A |
| cost. Nearly every carrier prices loops differently so it | | | | DS3 line actually consists of 672 individual channels, |
| is in your best interest to price DS3 service with | | | | each of which supports 64 Kb/s. DS3 lines are |
| several providers to ensure that you walk away | | | | extremely high bandwidth connections into a carrier's |
| satisfied. | | | | backbone. They typically include SLAs (Service Level |
| A DS3 line is also called a T3 line, which can be | | | | Agreements) that guarantee uptime and |
| confusing to most who are not familiar with internet | | | | performance. |
| lingo. DS3 is a high-speed connection that is capable | | | | DS Internet Access is the ideal solution for |
| of transmitting data at up to 45 Mbps. A DS3 line is | | | | businesses that require high-bandwidth access at a |
| equal to approximately 672 regular voice-grade | | | | reduced price. Whether you host high-traffic Web |
| telephone lines, which is fast enough to transmit | | | | sites, support Web hosting or need high-capacity |
| full-motion, real-time video, and very large databases | | | | bandwidth on an as-needed basis, there's a level of |
| over a busy network. | | | | DS3 service (Full or fractional) that will meet your |
| A DS3 line is installed as a major networking artery | | | | needs. Fractional to full DS3 or T3 circuits run from |
| for large corporations and universities with | | | | speeds of 3 Mbps up to 45 Mbps. |
| high-volume network traffic. Other example | | | | The 28 DS1 signals are multiplexed into seven DS2 |
| applications include large call centers, enterprise wide | | | | signals. Then, the seven DS2 signals are multiplexed |
| VoIP and IP PBX systems, Internet service providers, | | | | into one DS3 signal. Each multiplexing step uses bit |
| research labs, video conference centers and | | | | stuffing to handle the different input frequencies. |
| software development companies. A DS3 is the | | | | Overhead bits provide alignment, error checking, |
| second fastest, non-optical connection offered in | | | | in-band communications, and bit stuffing control |
| North America. A DS3 line is comprised of 28 T1 lines, | | | | information. |
| each operating at total signaling rate of 1.544 Mbps. | | | | For more resource about T3 or even about DS3 Line |
| Digital Signal consists of cataloging digital circuits | | | | and espcially about T3 Line please click these links. |