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Most of us are familiar with a normal business
or residential line from the phone company. A
normal phone line like this is delivered on a
pair of copper wires that transmit your voice
as an analog signal. When you use a normal modem
on a line like this, it can transmit data at perhaps
30 kilobits per second (30,000 bits per second).
The phone company moves nearly all voice traffic
as digital rather than analog signals. Your analog
line gets converted to a digital signal by sampling
it 8,000 times per second at 8-bit resolution
(64,000 bits per second). Nearly all digital data
now flows over fiber optic lines, and the phone
company uses different designations to talk about
the capacity of a fiber optic line.
T1 pricing depends on who provides it and where
it goes.
A large company may need something more than
a T1 line. The following table shows some of the
common line designations:
DS0 - 64 kilobits per second
ISDN - Two DS0 lines plus signaling (16 kilobits
per second), or 144 kilobits per second
T1 - 1.544 megabits per second (24 DS0 lines)
T3 - 43.232 megabits per second (28 T1s)
OC3 - 155 megabits per second (100 T1s)
OC12 - 622 megabits per second (4 OC3s)
OC48 - 2.5 gigabits per seconds (4 OC12s)
OC192 - 9.6 gigabits per second (4 OC48s)
Let our associates put together a plan for you.
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