DS1 Line

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DS1 line  
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A DS1 line (commonly referred to as T1 line) is a high speed 1.54 megabits per second (Mbps) circuit which is comprised of 24 individual DS-O circuits. Each DS-O circuit has a speed of 64 kilobits per second (Kbps). For perspective, your home telephone line is likely a DS-O line. (For more about DS1 line please click here)

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Coverage Area

Unlike DSL and other broadband technologies that are limited to only densely populated areas, T1 service is available just about anywhere with a phone line. T1, also known as DS1, uses repeaters to boost up the signal strength of the transmission - allowing it to travel up to 50 miles away from the nearest Central Office location.

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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. (Click here to return to top of page)

For details on any T1 related service, click on the service listed below.

Bonded DS1 | Bonded T1 | Bonded T3 | Buy T1 | Burstable T1 | Burstable T3 | Business T1 | Channelized DS1
Channelized DS3 | Channelized T1 | Data T3 | Dedicated Line | Dedicated T1 | Dedicated VPN | DS1 Data
DS1 Line | DS1 Prices | DS1 Providers | DS1 Voice | DS3 Network | DS3 Prices | DS3 Providers | DS3 Quotes
Dynamic T1 | Fractional DS1 | Fractional T1 | Fractional DS3 | Frame Relay Quotes | Frame Relay T1
Integrated DS1 | Integrated T1 | Integrated T1 PRI | Local Voice T1 | MPLS Network | MPLS T1 | MPLS VPN
Multiprotocol Label Switching | OC3 Quotes | OC3 Prices | Point-to-Point Quotes | Point-to-Point T1 | PRI T1
Price T1 | Price T3 | Purchase T1 | T1-T3 | T1 Business | T1-DS1 | T1 Consultation | T1 Data | T1 Dedicated
T1 Frame Relay | T1 Information | T1 Integrated | T1 Los Angeles | T1 MPLS | T1 New York | T1 PRI
T1 Providers | T1 Voice | T1 VOIP | Telecommunication US | T3 DS3 | T3 Cost | T3 PRI | T3 Quotes | T3 Rates
Virtual Private Networks | Videoconferencing T1 | Voice T3 | SIP T1 | Class of Service | Bonded T1 MPLS
Ethernet over Copper | Colocation Services | Fixed Wireless | Ethernet MPLS | Virtual DIDs |

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 Benefits of Dynamic Integrated T1 over Channelized T1

Written by: Dennis Green - Jan 9, 2009


Dynamic integrated T1 provides many benefits over other forms of T1. These advantages include the combination of both phone service, as well as internet service on one T1 circuit for a price which is similar to full internet t1, or a voice t1 circuit. This benefit is especially useful for small to medium sized companies which need both voice and internet t1, but only have the budget for one T1 line. A second benefit of dynamic integrated is that it allows access to all data “channels” at all times, regardless of whether phones are in use or not. With dynamic integrated, the entire T1 (1544 kilobits per second (kbps)) defaults to internet duties. As phones are used, bandwidth is assigned in real-time and with priority to each phone conversation. This prioritization ensures that the quality of voice traffic is not jeopardized by routine data traffic. Once each phone call is ended, the bandwidth allocated to that call is returned in real-time to internet duties, thus increasing the speed of access to and from the internet. Dynamic integrated T1 is the state-of-the-art version of integrated T1. It’s predecessor, channelized t1 was nowhere near as flexible and included much bandwidth wastage. For example, with channelized integrated, each of the 24 channels (64 kbps each) which make up a T1 circuit, is assigned to either voice or internet. I.e. 12 channels assigned as voice lines, and 12 channels (768 kbps) assigned to internet traffic. With this scenario, all data assigned to voice traffic, cannot be accessed for internet usage, without major reconfiguration. For this reason, when phones are not being used, all bandwidth allocated to the phones sits idol. Although dynamic integrated requires on premise equipment worth about $4000, this equipment and installation is provided for only a few hundred dollars by most telecom providers if the customer is willing to commit to a two year contract, and the equipment and installation are usually provided for free if the customer is willing to commit to a three year contract. Other benefits of dynamic integrated often include unlimited local and long distance usage (even in metered areas), up to 5000 minutes of toll free service per month, and online portal access, so that phone features can be accessed and revised in real-time by the customer. Several providers are now offering dynamic integrated t1 on bonded T1 circuits. Also, PRI is now available with dynamic integrated. (Click here to return to top of page)