What is T3 or DS3?

DS3 circuits provide businesses and Internet Service Providers (ISPs) with up to 45 Mb/s of dedicated Internet connectivity. This is an great solution for users who need more than  their T1 connections and are in search of unlimited, high-capacity access. A DS3 line actually consists of 672 individual channels, each of which supports 64 Kb/s. DS3 lines are very high bandwidth connections into a telecom carrier's backbone.  This level of carrier can transport 28 DS1 level signals within its service.  This level of carrier can transport 672 DS0 level channels within its payload. DS3 may also referred to as a T3 Line

A DS3 connection is made up of two monthly charges: the local loop and the port charge. The local loop charge is the cost of the circuit provided by the Local Exchange Carrier (LEC) that allows DS3 access into the carrier's network. The loop charge is based on the distance from the customer's location to the edge of the carrier's network; the greater the distance the customer is from the network, the more the loop will cost. Nearly every carrier prices loops differently so it is feasible to price DS3 service with several internet providers to ensure that you get the best price.

DS3 = Access to the Internet via a dedicated DS3 line at a speed of 44.736 Mbits.

Fractional to full DS3 or T3 circuits run from speeds of 3 Mbps up to 45 Mbps.

A DS3 line includes  of 28 T1 lines, each operating at total rate of 1.544 Mbps.

What is T1 or DS1?

Digital signal 1 (DS1, also known as T1, sometimes "DS-1") is a T-carrier signaling scheme devised by Bell Labs.[1] DS1 is a widely used standard in telecommunications in North America and Japan to transmit voice and data between devices. E1 is used in place of T1 outside of North America, Japan, and South Korea. Technically, DS1 is the transmission protocol used over a physical T1 line; however, the terms "DS1" and "T1" are often used interchangeably. Also, the 24 channels of traffic in a T1 line are sometimes called a T-span.

A DS1 circuit is made up of twenty-four 8-bit channels (also known as timeslots or DS0's), each channel being a 64 kbit/s DS0 multiplexed pseudo-circuit. A DS1 is also a full-duplex circuit, meaning, in theory, the circuit can send 1.544 Mbit/s and receive 1.544 Mbit/s concurrently. A total of 1.536 Mbit/s of [1] bandwidth is achieved by sampling each of the twenty-four 8-bit DS0's 8000 times per second. This sampling is referred to as 8-kHz sampling (See Pulse-code modulation). An additional 8 kbit/s is obtained from the placement of a framing bit, for a total of 1.544 Mbit/s, calculated as follows:

How fast is T1 and other designations?

Some large companies need something more than a T1 line. The following list shows some of the common line speed designations

DS0 – 64 kilobits per second
ISDN – Two DS0 lines plus signaling (16 kilobytes per second), or 128 kilobits per second
T1 Line Internet – 1.544 megabits per second (24 DS0 lines)
DS1 Line Internet – 1.544 megabits per second (24 DS0 lines)
T3 – 43.232 megabits per second (28 T1s)
OC3 – 155 megabits per second (84 T1s)
OC12 – 622 megabits per second (4 OC3s)
OC48 – 2.5 gigabits per seconds (4 OC12s)
OC192 – 9.6 gigabits per second (4 OC48s)

Recent sample of T1 price quotes

Full T1 (1.5 MB) $ 0 2 No $ 391
Local T1 (PRI) $ 0 2 n/a $ 380
Integrated T1 (24 Voice / 1.5 MB) $ 0 3 Yes $ 640
Metro Ethernet (10 MB) $ 0 3 Yes $ 950
Wireless T1 (6MB) $ 0 3 n/a $ 450
Bonded T1 $ 2099 3 Yes $ 799

Full Voice T1 $ 0 3 n/a $ 169

Latest News from the T1 industry.

Recently ShopforT1 our (quoting provider) reached $2,000,000 in monthly billing revenue. Such an achievement not only validates their commitment to excellence, but our commitment to you – our prospective customer. They process massive quantities of orders each month, but at the same time pay meticulous detail to every need of each and every one of our customers. That is how they are able to sign up and retain a vast pool of consumers that include the United States Government, Defense Contractors, Hospitals (including Walter Reed Army Medical Center, home to our recovering troops), Law Offices, Internet Service Providers, Wireless ISPs, State Universities, Web Hosting Companies, and more. When you talk to a ShopforT1 specialist, you do not receive a sales pitch – you tap into years of experience and expertise. Helping businesses find the right T1 line provider at the right price is the ONLY thing they do!

What is Metro Ethernet?

A Metro Ethernet is a computer network based on the Ethernet standard and which covers a metropolitan area. Metro Ethernet can connect business local area networks (LANs) and individual end users to a wide area network (WAN) or to the Internet. Corporations, academic institutions and government offices in large cities can use Metro Ethernet to connect branch campuses or offices to an intranet.

Simply put, metro Ethernet is a direct high-speed data connection to your provider. No loops. No middle men.

How fast is Metro Ethernet?

5 (mbps) to over 1000(mbps) or 1 Gbps

Who needs Metro Ethernet Connections?

Large Corporations, Government Agencies, Universities can use Metro Ethernet to connect branch offices to their Intranet.

Ways to use Metro Ethernet

Private connection between two locations, Reliable office network and Internet connection, VoIP, Streaming video surveillance, Hosting a server at the office, FTP (File Transfer Protocol) applications Audio/Video conferencing Payroll processing,  Sending large files (X-Rays, Blue prints, High-resolution images, video clips) More >>>

Telecom Operators Dial Up Cooperation

China Daily Three telecom operators are researching the possibility of setting up a telecom infrastructure company that would be responsible for construction of base stations for mobile networks. The Ministry of Industry and Information Technology said on Wednesday night that the three telecom carriers - China Mobile, China Unicom and China Telecom - are in discussions to build a collective company. The ministry's announcement came in response to a report from Caijing.com that the carriers are going to lease network resources from a new company. While the ministry said the new company would lead and coordinate construction of telecommunications infrastructure, it did not reveal whether the company would shoulder the responsibility of running and maintaining the network. "Establishing the company is good for saving energy and environmental protection. Also, it will lower the construction cost of the telecom industry. Thus it ultimately benefits telecom service users," the ministry said. China Mobile issued a statement on Wednesday night admitting involvement in the new company's founding. "Related works are underway," it said. China Unicom replied that all parties are still discussing the issue and have yet to reach an agreement. China Telecom, the smallest mobile network operator, said the purpose of launching a new infrastructure company is to promote resource sharing, as well as lower construction and operating costs. China is going to embrace a new wave of base station construction because of the commercial rollout of the 4G network. More >>>

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