Looking for adaptor phone line to dsl on my netbook, only have dial up internet.

a POTs (plain old telephone) line should never be connected to a router. that adsl filter does not make a phone line share a data line.
ADSL is a type of internet service supplied over a phone line. think of it as raw (unusable) when its on the phone line. then you use your dsl filter/splitter to feed the raw internet into a special dsl modem and the other port can be used by a standard phone.

you will know a dsl modem when you see it because its uplink or internet port will only be big enough to fit a phone cord into, not an internet cord. these dsl modems then feed usable internet to your routers and all devices on your network. but, like i said before, at this point it is too late for your phone and internet to share the same wire.

OK, thats not entirely true

pin out of RJ45 internet
1=orange/white *
2=orange *
3=green/white *
4=blue
5=blue/white
6=green *
7=brown/white
8=brown

1,2,3+6 are used in a typical network

if your network is typical you can "get fancy" and use 4,5,7+8 for telephone or even put 2 data lines on the same wire (not recommended for long distances). however, this may involve cutting some wires and splicing them together or something.

DSL connection works on the same line provided by company who provides DSL. If dialup line is not provided by DSL company, you can drop dialup line and contact DSL company for DSL connection. If dialup line is provided by DSL company, migrate your internet plan from dialup to DSL by contacting DSL company.

Call your ip internet provider ATT etc.
your dsl is incorrectly wired

if your netbook doesnt have built in dialup modem that mean u cant connect it to a dial up connection. most of netbook in market use wifi as primary connection or sometime comes with built in GSM modem to connect to internet. that meanc the option you can try is to buy a external USB dial up modem 

You would have to purchase a usb modem, similar to:

http://www.avondalesystems.com/images/products/93942447.jpg zoom

Fax Modem Usr5637 56k Usb The USRobotics 56K USB Modem delivers the performance and reliability USRobotics is known for, in a compact,…

If you have dial-up internet, it will happen.

If you have DSL, make sure you have DSL filters installed for each phone.

Sounds like there is a issue with your phone line. The DSL indicator is the phone line. Check to see if you have a dial tone or if a message is on the phone you haven't listen too, if you have message service. Try unplugging all phone connections as and replug them in again. You also might need a filter for your DSL to phone line. Also if you have an alarm that is monitoring your system, you need to by pass alarm and use a filter.

If you have dial up internet, turn off your computer and try it. If you have DSL then a wire has come loose at your phone box. There are 4 wires that come into your house from the phone connection. Phones use 2 of them and DSL uses the other 2.

if you are using dial up, you shud not have a modem.. modem is just for DSL connection
if you have a modem probably you are using a DSL connection

DEFINITION:
dial up - connection using a phone line with internet connection; cannot use fone while on internet

DSL/modem- connection using a modem plugged in with computer and fone line; able to use fone even when on internet.

it sounds like you may not have any dial tone. the hiss [white noise] you are hearing is from the dsl modem.try plugging a regular corded phone into the jack to check for dial tone.if there is none,call your phone company.also try plugging the fax machine into another jack where you know there is dial tone.
good luck
wg