| Feature |
T1 |
DSL |
| Main
Advantage |
Quality |
Cost |
| Target
Customer |
Organization
with mission-critical need for high-speed connectivity,
including web hosting and company-wide access.
|
Residential
users and small sized businesses requiring cost-effective
alternative for high-speed access. |
| Speed |
384k - 1.5mb (at all times) |
128k - 2.0mb (speeds and synchronous transmission is not guaranteed)
|
| Government
Regulation |
Regulated
-- State and FCC regulations mandate minimum cost escalation,
defined quality levels, and customer service responsiveness. |
Unregulated
-- There are no State and FCC regulations in place.
Circuit cost escalations, defined quality levels, and customer
service responsiveness are at the discretion of Verizon or
other local Bell
and the third party DSL provider.
|
| Service
Level Guarantees |
-
100% connection uptime
- 85ms round trip packet transmission
- 40 business day installation
- Proactive outage notification
|
None |
| Speed
vs. Distance |
Guaranteed
fixed speeds, independent of distance. |
Speed
is dependent on distance from telco central office -
the farther away, the slower the speed. Synchronous
transmission cannot be guaranteed.
|
| Distance
Limit |
No
limitations on distance from CO.
|
Limited
to 3.5 miles from CO. |
| Circuit
Availability |
T1
circuits are widely available. |
Limited
availability -not all towns served.
|
| Physical
Circuit |
T1
circuits are engineered for digital data transmission and may
be delivered via fiberoptic. |
DSL
connections are made from voice-grade copper telephone
circuits. Fiber, bridges or taps on circuit will
prohibit DSL.
|
| Application
Use |
Proven
in mission-critical situations.
|
Unproven
in mission -critical situations. |
| Reliability |
Dedicated
T1 connections are rock-solid and based on proven, mature
technology. High availability and reliability. |
DSL
is a promising new technology. However as with most
technological breakthroughs, there is a lot of pain while the
bugs are being worked out. DSL has the tendency to drop
frequently and is sensitive to weather conditions.
|
| Connection |
T1
service offers private point-to-point dedicated connection
between the customer and Tier 1 backbone network --
there is no middleman. |
DSL
is provided through a third-party vendor and is connected via
a shared, switched ATM network. A number of customers
are aggregated at multiple single connection points (DSLAM in
each DSL Central office). Each aggregation point is a
potential point of failure.
|
| Installation |
T1
circuit installation process is predictable averaging 40
business days. |
DSL
installation is uncertain and can be problematic, ranging from
40 days to 90 days plus. At least 10 percent of orders
will never be installed due to telco issues.
|
| Circuit
Repairs |
FCC
mandates a one-hour repair response from telco providers, once
a trouble ticket on T1 circuits is opened. |
DSL
connections are treated as voice-grade circuits. This
means the telco will not respond to trouble tickets until the
next business day. |
| Pricing |
Ranges from $399 to
$649 PLUS local loop (direct telco
connection from you to UUnet POP) |
Ranges
from $139.99 - $399.00 |
