Sunday, August 19, 2012

What is the difference between DS3 and bandwidth T3?


Not to be confused about the difference between DS3 and T3 circuits. These terms are really synonymous. Instead you should focus on what they can do for you ... and the best application scenarios.

Digital Signal (DS) is a classification system for digital circuits according to the rate and format of the signal (DS) and the apparatus provide the signals (T). DS and T designations have come to be used synonymously so that DS1 implies T1, and DS3 implies T3.

A DS3 line (also known as T-3) is an ultra high speed capable of transmitting data at speeds up to 45 Mbps A DS3 line is equal to about 672 regular voice-grade telephone lines, which is fast enough for the transmission full-motion video in real time, and large databases over a busy network. A DS3 line is typically installed as a networking artery for large corporations and universities with high volume network traffic. Other examples of applications of large call centers, enterprise-wide VoIP and IP PBX systems, Internet service providers, research labs, video conference centers and software development company. The DS3 is the second fastest, non optical connection offered in North America. A DS3 line is comprised of 28 T1 lines, each operating report to the total rate of 1.544 Mbps

DS3 circuits provide businesses and Internet Service Providers (ISPs) with up to 45 Mb / s of dedicated Internet connectivity. This is an ideal solution for users who have grown their T1 connections and are looking for unlimited access to high capacity. A DS3 line actually consists of 672 individual channels, each of which supports 64 Kb / s. DS3 lines are extremely high bandwidth connections to the backbone carrier. They typically include SLAs (Service Level Agreements) that guarantee uptime and performance.

The DS3 signal itself is composed of 28 DS1 signals and is constructed using a two-step process multiplexing. In the first place, the signals 28 DS1 signals are multiplexed into seven DS2. Secondly, the seven DS2 signals are multiplexed into a single DS3 signal. Each multiplexing step uses bit stuffing to handle the different input frequencies. Bit airlines provide alignment, error checking, in-band communications, and bit stuffing control information.

Line rate: 44,736,000 b / s
Signals: 7 DS2 signals = 28 DS1 signals

Overhead bits:
Total 56 bits / frame
F-bits (framing) 28-bit /
M-bit (multiframing) 3 bits per
C-bits (stuffing) 21-bit
X-bit (message) 2 bits per
P-bits (parity) 2 bits per
Data bits between the bits in the head 84

A DS3 connection is comprised of two monthly charges: the local network and port charges. 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 at the edge of the network of the carrier, the further away the customer from the network, more cycle cost. Nearly every carrier prices loops differently, it is in your best interest to price DS3 service with several providers to ensure you get the best deal.

DS Internet Access is the ideal solution for companies that require high-bandwidth access at a reduced price. Whether you host high-traffic Web sites, support Web hosting or need high-capacity bandwidth on an as-needed basis, there is a level of DS3 service (Full or fractional) that will meet your needs. Circuits to full DS3 or fractional T3 performed by a speed of 3 Mbps to 45 Mbps

For customers who require a bandwidth of a T1 line can provide but do not yet require the capacity of a full DS3 line, a fractional DS3 connection is the ideal solution. A fractional DS3 is similar to a full DS (T) 3, with only some of the channels turned off. This reduces the total monthly cost and provides additional capacity that can be transformed in a matter of days. Unfortunately, the (T) DS3 loop is still required for this service.

If a full DS3 line is more bandwidth that you really need, you can also get Fractional DS3, which gives you a portion of the full bandwidth DS3 at a lower cost. Of course, DS3 is also available in multiples to increase the bandwidth, similar to the bonded T1 service.

DS3 service can be deployed for a truth range of applications. The most common uses are DS3 point-to-point, DS3 internet, DS3 frame relay, DS3 voice and DS3 VPN. The price for these connections varies widely depending on the carrier, service location and the application for which the connection is used. Visit DS3 Bandwidth Solutions for the current "real time" and rate for the position .......

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