Multiple T1 Line Business
The advantages of using point
to point T1 private lines for interconnecting business locations.
By: John Shepler
What's the best way to interconnect multiple
business locations? Private T1 lines are far superior to "best
effort" digital lines such as DSL or Cable connecting to
the Internet, and even dedicated Internet connections. Why? Because
you have exclusive use of the network.
Advantages of Network Interconnectivity
Say your organization has a main office and a dozen substantial
locations for retail sales, design, warehousing, manufacturing,
medical or business services. It's vital that all locations are
interconnected on a real-time basis with dependable bandwidth
to share files and perhaps telephone communications. Within a
building or small campus, everyone is on the same Local Area
Network. It makes no difference if they are in side by side offices
or on different floors. On the network, everyone is right next
door. Wouldn't it be perfect if that network included all locations?
LAN Extension Using T1 Lines
T1 point to point private lines give you the ability to extend
your network across town or even internationally. These are also
known as WAN or Wide Area Network connections to complement your
local or LAN connections. What distinguishes T1 lines for this
purpose is proven reliability, guaranteed service, almost universal
availability, and exclusive fixed bandwidth. These "transparent"
data pipes give you the ability to engineer your network to run
exactly that way you want.
Proven Reliablity Bandwidth Technolgy
T1 lines are a proven technology. Developed in the 1950's for
use by the telephone companies themselves, the T1 line is the
basic digital line service for business applications. It has
a fixed 1.5 Mbps bandwidth in each direction. That bandwidth
can be allocated to network data, converged VoIP and computer
data, or segregated into 24 individual standard telephone channels.
If you need more bandwidth, T1 lines can be bonded to create
typically 2x to 9x the individual line capacity. Usually higher
bandwidth needs that these are assigned to DS3 circuits at 45
Mbps for cost reasons. However, in remote locations where there
is no installed DS3 service, it might be cheaper to install multiple
bonded T1 lines to get the required bandwidth.
Private Line vs VPN
What is a private line? It's essentially a T1 line that connects
directly point to point from one business location to another.
It's called a private line to distinguish it from an Internet
connection, which is shared by multiple users outside of your
organization. Can you use Internet connections to link your operations?
Sure. Generally this is done by using VPN or Virtual Private
Network software that encrypts your data to create secure private
"tunnels" within the Internet. If your primary use
is Internet access and have occasional need to send files between
locations, this might best way to go. Order an Internet T1 line
for each location and set up a VPN for your organization's private
Where Internet VPNs Fall Short
What an Internet connection doesn't do is guarantee your bandwidth
between locations. Your T1 lines will always run at 1.5 Mbps,
but the rest of the Internet is truly a public thoroughfare.
Congestion occurs and things slow down at random. There is no
ability to engineer QoS or Quality of Service for voice or video.
For email or non-time critical data exchanges this may not matter.
It's critical for high quality phone service and real-time applications
such as remote control or simulation.
Private Lines Give You Control
A private T1 line between locations is an empty pipe until you
fill it. It's perfect for interconnecting PBX telephone systems
or local area networks. You have complete control of priority
for different types of services, so you can ensure real time
video conferencing that doesn't break up or VoIP phone calls
that aren't garbled or dropped.
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