| What is T1 Line? | | | | In its general aspect, a T1 circuit is an "always on" type |
| Have you heard of the latest internet technology that | | | | of connection and since T1 lines are dedicated circuits, |
| was developed by the AT&T Bell Labs that is being | | | | they cost more compared to ISDN or Frame Relay |
| utilized in North America and Japan? It is described and | | | | circuits which thinks that the customer's connections |
| referred to as a particular type of copper or fiber optic | | | | are shared with other networks. |
| telephone line that has the ability of handling more data | | | | T1 circuits are the first ones which are in a multiplexed |
| compared to that of telephone lines. Have I already | | | | level of digital signaling multiplexing scheme. T1 lines use |
| stirred your curiosity? Lo and behold as we make way | | | | those Stratum 3 Clocks so that it can maintain what is |
| for this latest development, the T1 line. A T1 line has the | | | | referred to as the clocking on the line. The equipments |
| capacity of transmitting 1.544 Mbps and it can also be | | | | that are used in supporting T1 lines estimate its |
| used to send 24 digitized voice channels that can be | | | | synchronization with a T1 based on the data which is |
| used for phone service in commercial buildings and | | | | received over a link; hence T1 communications are fully |
| other establishments. | | | | synchronous all the time due to the frame slips. T1 lines |
| In the past, twisted copper telephone lines were the | | | | should be called rather as pleisiosynchronous |
| standard that lasted for decades. These copper lines | | | | connections. |
| were used for the transmission of voice and data thru | | | | A T1 line's speed can reach up as high as 1.544 Mbps |
| analog signals. As time progresses, the standard also | | | | on the circuit. T1s are the most common high speed |
| was slowly upgrading into fiber optic lines out of | | | | circuit that are being provided by the |
| bundled glass fibers, however, most T1 lines used | | | | telecommunication carriers because T1s can be |
| today are still made of twisted copper. T1 lines created | | | | regenerated and extended to reach any place. T1 lines |
| a 'pipe' which, as I have mentioned earlier, makes it | | | | also handle 24 channels of digital information and must |
| capable f blowing through larger data streams. | | | | keep a certain level of 1s density so that there is an |
| The price, however of this amazing T1 line can be | | | | assurance that the clock is maintained at the circuit's |
| very expensive. But don't you guys fret since it has | | | | both ends. |
| been a tradition in the world of technology that costs | | | | On its electrical aspect, T1 lines use the bipolar signaling |
| can increasingly drop when the demand grows. | | | | method where the voltage states the range between |
| Internet service providers or commonly known as ISPs | | | | +/- 12 volts. Binary zeroes are signaled with zero |
| are very accommodating their clients when they wan | | | | voltage. The binary ones are signaled with the use of |
| to lease T1 lines to provide service to their wide | | | | either a positive or a negative voltage which is |
| network of clients. There are also other multiplexed | | | | referred to as polarity. When the series of 1s are |
| fiber optic lines such as T2 and T3 lines and they has | | | | received on a T1 link, then the voltage changed from a |
| the capacity to transfer data to up to 44.736 Mbps. T3 | | | | positive to a negative voltage. From this alteration of |
| lines are equivalent to having 28 T1 lines and is being | | | | voltage, the receiving equipment can detect and |
| utilized by larger establishments that has higher data | | | | synchronize with the remote equipment's clocking. |
| and voice needs and demands. There are also more | | | | Zeroes are being indicated by the zero voltage on the |
| advance T-standards that are existing but they are | | | | line. |
| not high in use. | | | | Finally, in the cabling aspect, twisted pairs are used |
| Meanwhile, the European Union uses a different and | | | | within the communications network. One pair used for |
| incompatible type of carrier line which is called as the | | | | transmission, and the other is used for the receiving |
| E1 and the E3. E2 lines are available as well but these | | | | part, making four wires for each T1. This permits the |
| types of lines are less common. | | | | T-carrier systems in sending and receiving concurrently |
| In general, T1 lines can not be cost-efficient for | | | | in both directions at a full speed or full duplex. The T1 |
| individual or residential use and in this case, having a | | | | line trunk cables are made in bundles which come off |
| DSL or a cable service could be the better choice. | | | | as 25 pairs of 22 AWG copper wires which are |
| Small businesses and government agencies, on the | | | | especially designed for handling multiple T1s. The trunk |
| other hand - specifically those that are using PBXs can | | | | cables can handle multiple bundles of the 25 pairs and |
| greatly benefit from a T1 line. | | | | the standard method that is being used for the |
| Types of T1 line | | | | carrying transmission is to differentiate transmit from |
| T1 circuits are oftentimes referred to as 'always on' | | | | receive onto each pair into separate bundles to |
| connections. It does not resemble a voice circuit that | | | | decrease cross talks. Every now and then, a few |
| can only yield expenses when a call is placed. With this | | | | extra pair is being added to these bundles for line |
| reason, T1s are sometimes used as private lines or | | | | management functions that include fault location or |
| dedicated data lines because they are always utilized | | | | provisioning. |
| even though the data is being transmitted or not. | | | | Latest Developments on T1 Lines |
| Hence, it can never be used for handling traffic coming | | | | In today's world, being and staying connected is what it |
| from multiple subscribers. | | | | is all about and if by any chance you don't have a |
| However, the most obvious downside of having a T1 | | | | dedicated line, then you will eventually lose all your |
| line is its cost. T1 lines provide very fast and | | | | clients and the worst part is that you will lose your |
| dependable connections, but you will pay for that | | | | money. Prospering companies are all aware of that |
| guaranteed uptime. For a lot of businesses that | | | | fact and they opted to pick a T1 line connection to |
| depend heavily on employee and customer access to | | | | provide them the best quality there is for their |
| data and other applications, I assure you that T1s are | | | | customers. Having a connection is simpler today and is |
| really worth the investment. | | | | way cost effective compared to having an |
| Here are some types of T1 lines that they offer | | | | innumerable cables or phone lines all throughout the |
| depending on what your company suites best. In its | | | | company to have a full coverage. |
| basic sense, T1 lines are used to carry either voice or | | | | Keep in mind that happy employees will produce very |
| data requirements. | | | | efficient workers. However, when they are |
| | | | consistently fooling with trying to stay contact to the |
| 1. Integrated T1's which offer voice and data that is | | | | internet or keeping the circuits with no distractions or |
| carried on the same digital circuit. You have the | | | | disturbance so that they will not miss an important call, |
| freedom in deciding how much of the T1 connection's | | | | this can actually cause an undesirable workplace and |
| 24 channels can be used for voice calls and the | | | | loss of certain amounts of cash for the enterprise. |
| remaining channel can be used for data. | | | | You have to install a real dedicated hardware for your |
| 2. Fractional T1's utilizes only a part of the total | | | | business so that they can perform their jobs efficiently |
| bandwidth for the percentage of a full T1 rate. | | | | and that just includes a good internet connection and a |
| 3. Burstable T1's are the ones that are "pay as you go" | | | | very reliable phone service. Only a T1 line circuit |
| services. This type of T1 line offers a set amount of | | | | connection is something that can give to you. |
| bandwidth at all times, however, it also has the | | | | Small businesses can benefit greatly with its reliability |
| capacity of tapping into a much greater bandwidth at | | | | and dedicated connection. These kinds of circuit also |
| times when there are high traffic spikes. | | | | deliver a lot of channels for your broadband and phone |
| 4. Bonded T1's are the kind that provides a full | | | | usage or oftentimes - in a lot of cases, it can be both. |
| bandwidth coming from multiple T1s all at once making | | | | This DS1 service is very simple and it will not get in the |
| it suitable for a better speed and performance. The | | | | way of the work flow. In addition, it plugs right into the |
| combination of single T1s into a single pipeline permits | | | | central router for your bandwidth service and into the |
| more bandwidth compare to two separate T1 lines. | | | | telephone switch for the telephone usage. |
| Now bear in mind that when you have finally decided | | | | When people speak about these dedicated T1 |
| what type of T1 you are going to avail, then I am | | | | services, they are referring to the uploading and |
| pretty sure that there will always be a contract signing. | | | | downloading rate being identical. And unlike the cable |
| The contract that you will be signing for T1 line access | | | | services and DSL, T1 lines are most likely quicker |
| must be comprehensive, without unwanted surprises | | | | download compared to the upload rate. This kind of |
| or hidden fees - which mean putting all costs, length of | | | | line can transmit data at a speed of 1.544 Mbps which |
| service and the SLA in full detail. | | | | can be 60 times faster than a dial-up modem. This is a |
| The standard contract length for T1 line access is | | | | perfect solution for a workplace with up to 50 workers |
| three years and may include all the set-up fees, | | | | online all at the same time. |
| installation costs as well as equipment rental. Now, if | | | | As for your PBX, this can carry up to 24 digital voice |
| ever you break the contract early, then anticipate | | | | channels to deliver you with uninterrupted talk time |
| forking up several hundreds of dollars up to the | | | | which is actually an ideal solution for businesses that |
| balance that is left on the contract. | | | | use the phone most of the time or even have call |
| How does a T1 line Work? | | | | centers. |