|
TelecomMedic can
satisfy all of your data needs. We offer data-based solutions and
discounted bundled solutions (with
voice). Our extensive industry
experience has enabled us to partner with virtually every major
provider, and
we pass the savings along to our clients..
Typical
Applications: Small-Mid Size Companies, Application Service Providers,
Growing/Startup ISP’s requiring Web Conferencing, Email Access, VoIP,
E-Commerce Applications, etc.
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.
<BACK TO TOP>
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.
<BACK TO TOP>
Typical
Applications: Many and varied
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 T1 lines--offers 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 T1 can also be used for web hosting, streaming video,
voice over IP (VoIP), video conferencing, and virtual private networking (VPN).
T1 Internet provides companies with dedicated access, allowing use of all
the available bandwidth at the same time. Dedicated
T1 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.
 If
the cost of T1 Internet seems overwhelming, providers offer fractional
T1 or
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. TelecomMedic 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 Access can also be brought in with an
Ethernet 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.
<BACK TO TOP>
 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.
<BACK TO TOP>
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.
-
Medium -
Historically,
a
coaxial
copper
cable,
but
today it
is more
commonly
a
twisted
pair or
fiber
optic
cabling
that
provides
a path
along
which
electronic
signals
travel.
-
Ethernet Segment -
A single shared medium.
-
Station/Node - Devices that attach to
a segment.
-
Frame -
Variably sized chunks of information that the nodes communicate
in.
Frames are
analogous to sentences in human language. In English, there are
rules for constructing sentences: each sentence must contain a
subject and a predicate for example. The Ethernet protocol
specifies a set of rules for constructing frames much like there are
rules for constructing a proper English sentence.
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.
<BACK TO TOP>
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."
<BACK TO TOP>
Typical
Applications:
High traffic web sites, colleges & universities, government offices,
high volume call centers, ISP Backbone
 DS3,
which
stands
for
Digital
Signal
Level 3,
equates
to 28
T1
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
T1
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
TelecomMedic,
so give
us a
call and
we will
ensure
you
receive
the best
possible
advice
and
solution(s).
<BACK TO TOP>
Typical
Applications:
Distributed Networks, Frame & ATM Alternative, Traffic Engineering, Secure
Data & Voice
 Multi-Protocol Label Switching (MPLS) is a
standards-approved technology for speeding up network traffic flow and
making it easier to manage. MPLS involves setting up a specific path for a
given sequence of packets, identified by a label put in each packet, thus
saving the time needed for a router to look up the forwarding address to the
next node.
MPLS is called multi-protocol because it works with
the Internet Protocol (IP), Asynchronous Transport Mode (ATM), and frame
relay network protocols. With reference to the standard model for a network
(the Open Systems Interconnection, or OSI model), MPLS allows most packets
to be forwarded at the layer 2 level (switching) rather than at the layer 3
level (routing).
In addition to
moving traffic faster overall, MPLS makes it easy to manage a network for
quality of service (QOS). For these reasons, the technique is expected
to be readily adopted as networks continue to bundle more and different
mixtures of traffic.
<BACK TO TOP>
|
Internet T1
