| 1. |
What
is DSL technology? |
|
DSL
(Digital Subscriber Line) is a technology that
brings high bandwidth information to homes and
businesses over copper telephone lines. DSL technology
allows data transmission at speeds much faster
than the best available analog and digital modems.
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| 2. |
What
is a RADSL? |
|
Rate
Adaptive Digital Subscriber Line (RADSL) is a
technology that adapts to the changing line conditions
on the local loops. A RADSL in fact, is able to
adapt to these changing conditions as they are
happening.
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| 3. |
What
are some of the differences between DSL technologies
and ISDN? |
|
DSL
is a technology that is easier to provision at
the Central Office than ISDN is.
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| 4. |
Do I need to be loop qualified to receive DSL service?
|
|
The
shared-network nature of the cable modem technology
is a large security risk since their traffic is
easily intercepted by anyone else in their area.
A cable modem can require extensive premises and
drop cable rewiring and is easily overloaded due
to shared upstream channels with more cable modem
users in your area.
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| 5. |
What
is a IP address? |
|
Just
as each building on a street has a unique address,
so does each computer or server on the Internet.
This "address scheme" allows other computers or
servers to distinguish between every other computer
or server on the Internet. For example a number
such as "63.224.53.1" is the Internet Protocol
(IP) address for a specific computer or server
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| 6. |
What
is a dynamic IP address? |
|
A
dynamic IP address is a temporary address assigned
to the DSL router at the start of a logon session
from a pool of addresses owned by Qwest. This dynamically
assigned address will not change as long as your
DSL router remains connected to the Internet. If
you disconnect your DSL router from the Internet,
that IP address is returned to the Qwest pool for
possible assignment to another customer. When you
reconnect to the Internet, a dynamic IP address
(possibly different than before) is again assigned
to your DSL router. At any point in time, a particular
dynamic IP address from the pool is only assigned
to a single customer, ensuring uniqueness of the
address in the Internet.
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| 7. |
What
is a static IP address? |
|
A
static IP address is a dedicated, unique address
that has been assigned to a given computer or
server for an extended period of time. Static
IP addresses are needed for e-mail and web servers
so that users on the Internet can always access
the same server using the same IP address or domain
name.
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| 8. |
If
I need static IP addresses, how many can I get? |
|
Static
IP addresses come in "blocks," and are governed
by standard IP subnetting rules. Currently, Qwest
offers a block of five (5) usable IP addresses,
which is sufficient for most small and medium
business locations. Qwest does not offer any other
IP address block sizes at this time.
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| 9. |
When are static IP addresses required with Qwest DSL Internet Access? |
| |
The most common situations that require static IP
addresses include: 1) If you are going to be hosting
your own e-mail, web or other type of server, 2)
If you have a dedicated firewall, 3) If you are
going to implement a VPN to enable secure connections
with other sites on the Internet, or 4) If any of
the applications you are using over the Internet
require static IP addressing to function properly.
(Figure 1 depicts a typical static IP addressing
scenario.)
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| 10. |
How
does it work to get a block of 5 IP addresses? Isn't
it really a block of 8 addresses, and if so, why
can't I use the other 3 |
|
Technically, it really is a block of 8 addresses,
and 5 of those addresses are usable for customer
devices. As with any IP subnet, the first and last
IP addresses within the subnet cannot be assigned
to specific devices. In a static IP address scenario,
the DSL router requires one of the usable addresses.
Thus you end up with 5 usable addresses from the
block of 8. As an example, table 1 provides a detailed
breakdown for subnet 63.224.53.0 with a subnet mask
of 255.255.255.248 (a "/29" subnet mask).
| # |
IP address |
Description |
| 1 |
63.224.53.0 |
Reserved—identifies the entire
subnet |
| 2 |
63.224.53.1 |
Available for customer device
#1 |
| 3 |
63.224.53.2 |
Available for customer device
#2 |
| 4 |
63.224.53.3 |
Available for customer device
#3 |
| 5 |
63.224.53.4 |
Available for customer device
#4 |
| 6 |
63.224.53.5 |
Available for customer device
#5 |
| 7 |
63.224.53.6 |
Reserved-assigned to DSL router |
| 8 |
63.224.53.7 |
Reserved-subnet broadcast address |
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| 11. |
Can
I get more than one block of 5 usable IP addresses
for the same DSL connection? |
|
No.
Only one block is available per DSL connection.
If you have more than 5 devices on your LAN, one
option is to use static IP addressing in conjunction
with NAT. Refer to the questions below and Figure
3 for additional details.
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| 12. |
What
is the difference between "public" and "private"
IP addresses? |
|
Simply put, "public" IP addresses can be routed
across the Internet, and "private" IP addresses
cannot be routed across the Internet. The single
dynamic IP address or block of static IP addresses
that Qwest provides to you are public addresses.
They are unique throughout the Internet, and are
accessible from any other user on the Internet.
If you are using NAT, the 10.0.0.x addresses that
the DSL router assigns to your client PCs are private
addresses, and these addresses cannot be routed
across the Internet. The Internet community has
reserved certain IP address blocks for use in private
networks, and the entire 10.0.0.0 network is one
of those reserved blocks.
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| 13. |
What
is a Virtual Private Network (VPN)? |
|
A VPN creates the effect of a private, leased line
network, but without the associated design, deployment,
cost and vulnerability issues. Dedicated circuits
are established between the host location, the closest
Central Office and the subscriber location. Dedicated
circuits are not established between various subscriber
locations. Routing tables are established to route
the data traffic over the high-speed DSL facilities
on a priority basis in order to ensure that the
level of service provided is similar to that offered
by a true private network.
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| 14. |
Why
can't I get service? |
|
Unfortunately, even if Qwest?s Integrated Business
Solutions are available in your area, your telephone
line may not be eligible for service. Technologically,
you must be located within a certain distance from
your Central Office to be able to receive the service.
In addition, bridge taps, loop coils, temperature
fluctuations and other anomalies may prohibit a
location from receiving service. Qwest continues
to strive to be your preferred solutions provider.
Please contact us at 1.877.766.2408 for more information
regarding service in your area
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| 15. |
Do
I need to have an additional line to receive Qwest's
Integrated Business Solution Business Class DSL? |
| |
As your chosen provider for your business needs, Qwest will
secure a second line for your DSL service. There will be no changes to
your current phone line and services nor will there be any additional
charge to you through your current telephone service provider. The
provisioning of the second line is taken care of by Qwest.
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| 16. |
Can
I have more than one domain name supported? |
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Currently, Qwest Integrated Business Solutions does not
support more than one domain name or subdomain names.
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