T3-DS3

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T3 and DS3 are terms which in the field of telecommunication are often used interchangeably to describe a 45 mbps (megabits per second) circuit. A T3-DS3 is the equivalent of 28 T1s. People who are more technically inclined will often refer to DS3 when they are talking about the configuration of the circuit, and T3 if they are referring to the physical facilities which carry the circuit. Most people, however, use both terms interchangeably. On this website, these two terms will be used interchangeably. (For more about T3-DS3 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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T3-DS3 Applications

T3 is a relatively large data bandwidth pipe which is commonly used for internet connectivity, voice lines, direct point-to-point connection between two business locations, Multiprotocol Label Switching (MPLS) networking between multiple locations of a business and integrated circuits which combine any combinations of these applications.

T3-DS3 Internet

A T3 data circuit can support up to 600 internet users, depending on application and simultaneous usage. DS3 is also great for facilitating servers which will allow hundreds of simultaneous users to access information from servers.

T3-DS3 Voice

A DS3 voice circuit is excellent for large call centers, or for facilitating the telephone needs of hundreds of occupants of an office complex. T3 voice can be provided either as local voice, for local and long distance calling, or as long distance voice, which provides wholesale per minute long distance prices but does not facilitate local calling. Both long distance and local voice can be integrated into one DS3 voice circuit.

T3-DS3 Private Point-to-Point

DS3 point-to-point circuits are extremely popular for connected two or more business locations. To clarify, with point-to-point a separate circuit is needed for each two locations networked. These circuits can facilitate location to location transfer of large data files, multiple file transfers between hundreds of employees, location-to-location voice traffic and video conferencing.

T3-DS3 MPLS Networking

DS3 MPLS networks are better suited for networking more than two locations than point-to-point circuits. This is because MPLS facilitates any-to-any location networking rather than requiring a separate circuit for each two locations required by point-to-point networks. Also, with Class of Service (CoS) MPLS can prioritize applications. With CoS, applications such as routine data transfer, voice, and video can be efficiently implemented simultaneously over one bandwidth pipe, without interfering with each other. MPLS is a major advancement when compared networks based on point-to-point or frame relay.

T3-DS3 Integrated

One T3-DS3 integrated circuit can accommodate all applications mentioned above on one circuit. For example, with an integrated DS3 circuit, local voice, long distance voice, video, internet and networking can all be facilitated on one circuit.

T3-DS3 and the Need for Build-Out

DS3 requires fiber or other forms of special wiring to reach each business location. This is very important because new customers, or customers considering upgrading from t1, bonded t1, or ethernet over copper, must pay for this wiring (build-out cost) before their building can receive t3 or OC circuits. Buildings which are connected to fiber, and therefore able to receive DS3 are referred to as being “lit”. It is not uncommon for customers to fail to plan for this unexpected upfront cost when planning the installation of DS3. Build-out often costs tens of thousands of dollars.

Alternatives to T3-DS3

There are many alternatives for customers who need less or more bandwidth than can be provided by DS3. If a customer needs between 15 mbps and 35 mbps, then fractional T3 is an excellent choice. If 12 mbps or less are needed, then ethernet or bonded t1 are excellent alternatives. It is important to consider these alternatives if less that 45 mbps are needed because bonded t1, and ethernet are delivered over copper phone lines and therefore do not require expensive build-out costs. Often bonded t1 and ethernet are installed for free. If more than 45 mbps is needed, then OC 3 (155 mbps) is a good alternative. Both fractional DS3 and OC circuits require build-out for buildings which are not lit.

Ethernet over T3-DS3

Larger ethernet circuits can be delivered over DS3. There are at least three advantages of ethernet over DS3. First, ethernet over DS3 can deliver higher bandwidth than a regular DS3 circuit. Ethernet over DS3 can provide up to 88 mbps. Second, ethernet over DS3 can be less expensive per mbps then DS3. An 88 mbps ethernet over DS3 circuit can often be offered for less than $6000 per circuit. Depending on location, $6000 is the average cost for a 45 mbps DS3 circuit. Third, ethernet over DS3 requires much simpler and less expensive hardware for handoff at the customer premise than does DS3.

To check prices and availability for any of the services listed above, please use the pricing tool at the top of this page. Its free, real-time, easy to use and there is no obligation. (Click here to return to top of page)

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 What are T1 MPLS VPNs, and How Might a MPLS VPN Benefit Your Business?

Written by: Dennis Green - Nov 20, 2008

A T1 line is a high speed 1.54 megabit 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. T1 dedicated lines are commonly interchangeably referred to as T1 or DS1. A T1 dedicated circuit is carried through two twisted pairs of copper wires. Virtually, all residences and businesses currently have two pairs of copper wires running to them. T1 lines are capable of delivering 1.54 Mbps simultaneously in both directions, one direction for each pair of copper lines. Because T1 dedicated service is repeater driven (signal is digitally reestablished about every 6000 feet), it is available to virtually every business in the United States. T1 lines are dedicated, in that they are always connected. They are also extremely stable. Most reputable providers include service level agreements which guarantee the reliability of the T1 circuits they offer. There are several types of T1 line. These include: full (1.54 Mbps), fractional (commonly 128 Kbps to 756 Kbps), burstable, integrated (one T1 line comprised of any combination the types of T1 listed here), channelized DS1 (a specific type of integrated T1), point-to-point (direct private T1 connection between to locations), data (internet), local (local phone service), PRI (voice service which includes many added features and direct inward dial (DID) numbers), and frame relay. Each of these types of T1 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 T1 provider and the geographic location of your business. VPN service utilizes major advancements in technology to establish secure private communication channels, for the transfer of data, over shared networks such as private intranets or the public internet. VPN is an acronym for virtual private network. Currently, the most popular and state-of–the-art VPNs are based on MPLS (multiprotocol label switching) technology. MPLS provides any-to-any connectivity over T1 or higher bandwidth. Some providers can provide MPLS over SDSL as well. The best MPLS networks are facilitated within the closed systems of specific tier 1 providers. With this scenario, MPLS networks are as secure as point-to-point private lines. With quality of service (QoS), MPLS networks are extremely well suited for simultaneously facilitating VOIP, priority files, multiple location audio or video conferencing, and/or high quality video transmission. For two location networks, a point-to-point private line continues a bit less expensive than a MPLS VPN. However, point-to-point circuits are not normally managed by providers, so with point-to-point lines, obtaining customer premise equipment, and configuring and maintaining the equipment is commonly the responsibility of the customer. For multiple location networks, two location networks which are more than 1000 miles apart or two location networks which you know will increase in number of locations, an MPLS network can be far more functional, and far less expensive than a network comprised of point-to-point lines. In most cases, full T1 or DS3 MPLS VPNs are provided with all needed hardware and installation, configuration and management of the network by the provider for about the same cost, or just slightly more, per location, than managed internet service. Managed MPLS networks are pretty much turn key for the end user. There are also a variety of options for networking DSL or Cable service as well. As the authorized sales agents for the top 20 telecom providers in the country, we can provide free comparative quotes for completely managed VPNs for any locations in the US, regardless of the bandwidth needed at each location. We can also provide quotes for international VPNs (including MPLS options as well). (Click here to return to top of page)