Find the right product for your application with these fast, easy online tools.
Black Box products can be conveniently purchasedthrough a broad range of qualified distributorsand resellers located around the globe.
Black Box is a qualified GSA supplier and acceptsall government purchasing cards.
Meet government requirements with our extensiveline of TAA compliant products.
Save with discounts tailored for first-time buyers,vertical markets, resellers, and more.
Sign up to receive your favoriteBlack Box catalogs free.
Get fast answers from one of our Experts.
Helping you is our priority at Black Box.You can contact us by phone, fax, email, or chat with one of our Experts for immediate assistance.
An Expert will call you within30 seconds. It's live and it'sfree.
Get fast answersfrom one of ourExperts.
Helping you is our priority at BlackBox. You can contact us by phone,fax, or email with one of our Experts for immediate assistance.
Local Sales Calls
1300 73 44 55
International Sales Calls
+61 3 9237 8100
(03) 9764 0673
+61 3 9764 0673
0800 653 219
0800 737 837
We’ll respond in 60 seconds or less!
Answered in 15 minutes or less!
We'll answer within 60 minutes or less!
While there are many applications for basic T1 rate service (1.536 Mbps), some applications require much more bandwidth. One of the most attractive features of T1 is the number of... more/see it nowoptions available to accommodate these kinds of demands. The important thing to remember is that all of these higher-speed services operate with the same consistent framing formats as the standard T1 service.
T1 is a high-speed service with a clock speed of 1.544 Mbps. It’s made up of 24 64-kbps DS0 (Digital-Signal [zero]) subchannels that together can support throughput rates of up to 1.536 Mbps. But there are higher levels of T1 service that are also available. For instance, T1C service doubles the T1 rate. It supports 3.152 Mbps with a total of 48 DS0s for top-speed applications. In a T1C environment, two T1 lines are combined into one using a special T1 mux.
The next-highest level of service is called T2. It offers 6.312 Mbps over 96 DS0s by multi-plexing 4 T1 lines into a single high-speed line.
The next two levels of service are exponentially larger than T2. A high-speed T3 trunk line is 28 times larger than a standard T1 line. T3 brings 44.736 Mbps to a customer site via 672 DS0s. This tremendous capacity is made possible by multiplexing 28 T1 lines or combina?tions of T2 and T1 lines.
Finally, T4 service offers a bandwidth potential of 274.176 Mbps, made up of 4032 64-kbps DS0 subchannels. At 168 times the size of a standard 1.544-Mbps line, T4 service dwarfs T1. The physical connections require multiplexing 6 T3 lines or 168 T1 lines into a single high-speed trunk.
With so many incredibly high-speed T-level service options available, system administrators have great flexibility to configure their operations for maximum efficiency and economy.
It’s important to remember that these various levels of T1 services can be implemented simultaneously within a particularly large enterprise to support complex network configurations.
Of course, this kind of application has the potential to become somewhat overwhelming from a management standpoint. However, as long as you keep track of the individual DS0s, you should always be able to accurately gauge how much available bandwidth you have at your disposal. collapse
If you manage a heavy-traffic data network and you demand high bandwidth for high speeds, Black Box has what you need to send your data digitally over super-fast T1 or... more/see it nowE1 communication lines.
Both T1 and E1 are foundations of global voice communication.
Developed more than 30 years ago and commercially available since 1983, T1 and E1 go virtually anywhere phone lines go, but faster.
T1 sends data up to 1.544 Mbps. E1 supports speeds to 2.048 Mbps. No matter where you need to connect—North, South, or Central America, Europe, or the Pacific Rim—T1 and E1 can get your data there—fast!
Both services provide flexibility for a multitude of applications.
Whether you need to drive a private, point-to-point line or a high-speed circuit; provide corporate access to the Internet or inbound access to your own webserver; or support a voice/data/fax/video WAN that extends halfway around the world, T1 or E1 can make the connection.
Both offer cost-effective connections.
In recent years, competition among telco service providers has led to increasingly more affordable prices for T1 and E1 services. In fact, most companies seriously considering a shift to T1 or E1 find they can negotiate even better rates with just a little comparative cost analysis.
• Trunking of V.90 and ISDN remote connection to a central location.
• Accessing public Frame Relay networks for voice, fax, and data.
• Merging voice and data traffic. A single T1 or E1 line can give you several additional voice and data lines at no additional cost.
• Making LAN connections. If you’re linking LANs, a T1 or E1 line offers excellent performance.
• Sending bandwidth-intensive data such as CAD/CAM, MRI, CAT-scan images, and other graphics with large files. collapse
Digital signal (DS) speeds are used to classify the capacities of lines and trunks as designated by the Trunk (T) carrier systems. The most well-known T carrier system is the... more/see it nowNorth American T1 standard, which was originally designed to transmit digitized voice signals at 1.544 Mbps (DS-1). T carrier systems now carry digital data as well as voice transmissions.
DS-3 lines offer the functional equivalent of 28 T1 channels, operating at 44.736 Mbps (commonly rounded up to 45 Mbps). These lines handle up to 672 voice conversations and are used in high-speed interconnect and DS cross-connect (DSX) applications.
DS-4 offers 274.176 Mbps transmission—the same as 4032 standard voice channels—and has 168 times the capacity of T1. This performance level is generally used for carrier backbone networks.
Products offering DS-3 and DS-4 functionality comply with T3 and T4 standards, respectively, and with Bellcore GR-139-CORE specifications. collapse
Delivering superior technical support is our highest priority. Depending on the products or services we provide for you, please visit your appropriate support area.
Get in touch and stay in touch with Black Box Network Services:
» Contact us
» Get Catalog
» Join our Mailing List to Receive White Papers, Case Studies, and Special Offers
» Follow Us
Black Box Network Services offers comprehensive communications and infrastructure solutions. Find out what we can do for you:
Find high quality products at the right price. Search and buy from our 118,000+ product catalog:
Black Box Network Services is the world's largest independent provider of communications, infrastructure, and product solutions. Learn more about us: