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The Internet is a critical component of most businesses so Internet access needs to be fast and reliable. 


The most popular option for business connections--integrated T-1 Lines--offer reliable, always-on connectivity, featuring 24 individual channels which enable shared Voice & Data on the same lines.

A high speed T1 line offers download and upload speeds that are 30 times faster than traditional dial-up.  This allows companies to efficiently communicate and exchange data with colleagues and clients from anywhere in the world, Business T-1 can also be used for web hosting, streaming video, voice over IP,
videoconferencing, and virtual private networking (VPN).

T-1 Internet provides companies with dedicated access, allowing use of all the available bandwidth at the same time.  Dedicated T-1 can support hundreds of different users on a single line.  Larger companies with 100 or more employees, may want to invest in a high speed T3 line.  Dedicated T3 lines combine the power of 28 individual T1 lines to provide the fastest speeds, although it does cost considerably more than T1's.

If the cost of T-1 internet seems overwhelming, providers offer fractional T1or fractional T3 service.  With a fractional T1 or T3, companies are provided with just a portion of the total bandwidth.  This provides the fast download and upload speeds, but could suffer from backlogs if other companies sharing the bandwidth are also putting a heavy load on the same line(s) at the same time.  Total Telecom assists companies in weighing the benefits and disadvantages of dedicated T1 or T3 vs. fractional lines to figure out what is the optimum solution.

With a business T1 line, reliability is at a premium. Vendors provide service level agreements (SLAs) ensuring that your high speed data line will remain up and running 99.99% of the time.  This guarantee protects your business and can prove costly to ISPs if your service drops below that level.

 Internet service can also be brought in with an Eternet hand off.  This is becoming more and more prevalent in today’s VOIP and data worlds as it can give your company a Layer 2 connection and integrate into your current data equipment without having to convert it from the traditional T1 or T3 equipment interface.

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Ethernet

Typical Applications:  Network Redundancy, DS3 Alternative, Extending the LAN, Dedicated Internet Access

 Ethernet follows a simple set of rules that govern its basic operation.  To better understand these rules, it is important to understand the basics of Ethernet terminology.

 

There are explicit minimum and maximum lengths for frames, and a set of required pieces of information that must appear in the frame.  Each frame must include, for example, both a destination address and a source address, which identify the recipient and the sender of the message.  The address uniquely identifies the node, just as a name identifies a particular person.  No two Ethernet devices should ever have the same address.

 

Ethernet can be used for Point to Point data communications or internet applications and starting at 10Mbps to an ever expanding upper limit.  This is probably the fastest growing segment in the data industry today, due to pricing and ease of use.  Contact us today to learn about all the latest advantages that Ethernet packaged solutions can bring to your business.  

 


 

 Point to Point Circuits

Typical Applications:  Interoffice VoIP, Traditional Analog Voice Channels between Remote Locations, Disaster Recovery, Storage Area Network Implementation (SAN)


A point to point T1 is a dedicated circuit between two separate locations.  It provides 1.544 Megabytes of information between point A and point B.  The cost is based on distance and speed.

 

This type of circuit is always on, and the customer will never pay for usage between the sites.  We like to describe this as "Two Cans and a String."  

 


DS3, which stands for Digital Signal Level 3, equates to 28 T-1 lines or 44.736 million bits per second (roughly 43-45 Mbps upstream/downstream speeds).  DS3s have enough bandwidth to allow very large data transferring over busy wide area networks (WANs) and the capability of handling 672 simultaneous voice conversations.  DS3 typically runs long-haul over fiber optics and then co-axial cable in the last mile, however there are many exceptions to this.  Also, because fiber is only available in limited parts of the US (vs. copper), expensive build-outs are sometimes required for full DS3 access.

In North America, DS3 translates into T3, which is the equivalent of 28 T-1
 channels, each operating at a total signaling rate of 1.544 Mbps.  The 28 T1s are multiplexed through a 1-to-3 multiplexer (M13), and 188 additional signaling and control bits are added to each T3 frame.  As each frame is transmitted 8,000 times a second, the total T3 signaling rate is 44.736 Mbps.  In a channelized application, T3 supports 672 channels, each of 64 Kbps.  In the European hierarchy, a DS3 is in the form of an E3, which runs at a total signaling rate of 34.368 Mbps, supports 480 channels, and is the equivalent of 16 E1s.

If you’re moving a DS3 (or any other DS signal) across continents, the standards of the target country rule.  Channels get muxed and demuxed (decoded and encoded), with signaling conventions translated as well.  For example: on the US side, T1s are in multiples of 24 x 64 Kbps circuits (total 1.5 Mbps).  In the UK, it’s 30 x 64 Kbps (total 2 Mbps).  If you were to interconnect to the US at a DS3 level, you would not receive 28 T1s with 6 spare channels.  Instead, you would get multiples of 30 E/T1s.  As they arrived in the UK, they would be muxed and demuxed, along with translated signaling conventions.

Generally, a DS3 line is installed as a major networking channel for large corporations or universities with high volume network traffic.  This is an always-on, high-speed connection that provides a dedicated, stable, and reliable link to the internet
and can support up to 500 or more computer users.

If a full 45 Mbps DS3 isn't quite necessary, then "tiered" and "burstable" speeds are also options to consider.

Tiered is more suitable for clients who expect their bandwidth requirements to increase steadily and/or continually in the near future.  Clients with other access (such as T1 lines
) can rapidly and easily switch their bandwidth to a single fractional DS3.

Burstable is a dedicated Point to Point circuit
from a customer's premises to the telecommunication carrier's network operation center (NOC).  This service is priced in billing tiers of 3 MBps increments from 3 MBps to 45 MBps.  A burstable DS3 customer always have the full bandwidth available over an unshared, non-fractional 45 MBps digital leased line.

Burstable DS3 connections tend to be expensive, sometimes costing as much as a dedicated 45 MBps connection.  Burstable lines can often be found at their lowest price within a collocation facility.  At a collocation facility (or simply referred to as a "colo"), many users share a large OC3 or OC12 pipe.  This set-up provides customers a fixed cost while providing the benefit of being able to burst up to very high bandwidths if necessary.

Companies that require the reliability of a large pipe for bursty traffic but don't have the capital should consider a collocation.  Companies with a steady and consistent volume should consider keeping services in house and going with a T3/DS3 connection. 

 

These types of decisions and comparisons can be made much simpler by talking with one of our experts here at Total Telecom, so give us a call and we will ensure you receive the best possible advice and solution(s). 

 


Internet T1 is the standard for businesses seeking mission critical Internet connectivity. Providing up to 1.54 MBps of dedicated bandwidth, it is able to handle the demands of users operating in an increasingly data-centric world. 

 


 

Integrated T1

Typical Applications:  Replacement of POTS and DSL for Small to Medium size Businesses requiring increased bandwidth, bundled solutions


Integrated T1 (also called channelized T1) is a digital carrier modulation method in which a T1 line is divided into 24 channels, each having a maximum data speed of 64 thousand bits per second (Kbps), and each capable of supporting a unique application that can run concurrently with, but independently of, other applications on different channels.

 

T1 is the most commonly used digital carrier method used in the United States, Canada, and Japan, carrying 24 pulse code modulation (PCM) signals with time-division multiplexing (TDM) at an overall rate of 1.544 million bits per second (Mbps).

 

Integrated T1 has become popular with businesses because of its flexibility.  It allows an enterprise to run several services, such as local telephone,Long Distance Telephone, Internet  and Voice over IP (VOIP) over a single circuit at the same time.  Integrated T1 should not be confused with fractional T1.  A fractional T1 line is leased to a customer at a fraction of the data-carrying capacity of a conventional T1 line, and at a correspondingly lower cost.

 


   

 DSL

Typical Applications:  Small businesses not running VoIP

 Digital Subscriber Line (DSL) technology was originally implemented as part of the ISDN specification, which was later reused as IDSL.  Higher speed DSL connections like HDSL and SDSL are developed to extend the range of DS1 services on copper lines.  Consumer oriented ADSL is also designed to operate on a BRI ISDN line (which itself is a form of DSL) as well as on an analog phone line.

U.S. telephone companies promote DSL to compete with cable modems.  DSL service was first provided over a dedicated "dry loop", but when the FCC required the incumbent local exchange carriers (ILECs) to lease their lines to competing providers such as Earthlink, shared-line DSL became common.  Also known as DSL over UNE, this allows a single pair to carry data via a digital subscriber line access multiplexer (DSLAM) and analog voice via a circuit-switched telephone switch at the same time.

Older ADSL standards can deliver 8 Mbit/s to the customer over about 2 km (1.25 miles) of unshielded twisted pair copper wire.  The latest standard, ADSL2+, can deliver up to 24 Mbit/s depending on the distance from the DSLAM.  Distances greater than 2 km (1.25 miles) significantly reduce the bandwidth usable on the wires, thus reducing the data rate.

 

 

 

 

 

 

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