ATM is another (new) technology that was designed to get better utilization
of a circuit in certain situations. It accomplishes this by enabling
a single circuit to carry different types of traffic. The goal of
ATM is similar to that of Frame Relay, but ATM tries to accomplish
a little more, and uses a different approach than Frame Relay.
Like
Frame Relay, ATM allows customers to share a single circuit. ATM also
supports a concept called Quality of Service (QoS) which allows for
finer control of information transfer than Frame Relay. But this comes
at the cost of some efficiency.
Also
like Frame Relay, ATM enables the user to have some amount of capacity
dedicated to them, while sharing the rest of the capacity of the circuit.
This means that if somebody is not using their share, then you might
be able to use their share. The amount of capacity that is dedicated
to the user is called the Specified Bit Rate (or SBR). The capacity
available beyond the SBR is called the burst rate.
As mentioned
in our T1 Overview section, a T1 circuit consists of 2 components
for recurring charges:
The
local loop is a telco supplied wire that is the T1. The Internet port
is the connection of that wire to the Internet. When pricing T1 based
services, it is important to understand what is included in the pricing
and what is not (so you can compare "apples to apples").
For
an ATM circuit, the telco supplies the T1, and NetIn.com supplies
the Internet port. The prices we listing in this page are ballpark
prices based on averages. Our prices include only our setup and Internet
port charges. The cost of the T1 local loop will come from the local
telephone company.
ATM
Connection -128k SBR/256k BR
| |
Setup
Charge |
Monthly
Charge |
| Month
to month |
$100 |
$250 |
| 3
yr contract |
$100 |
$225 |
| 5
yr contract |
$100 |
$215 |
Overview
HDLC
Frame
Relay 
ATM