|"I'm not sure if I'm wiring it correctly. I have cable(my phone is also through cable), and I tried plugging it into the back of the computer, the modem or directly into the wall outlet and it will not work"|
Did you READ the manual for the mutifunction printer/ fax / etc.???
Is your internet connection service and your phone service both being provided via a coaxial cable, not a telephone line?
If yes, does a regular phone work plugged into the telephone wall jack ?
If it doesn't, you can't use the fax feature when the device is plugged into the telephone wall jack - you must have a working (paid for) telephone "land line " connection for it.
If your internet connection service and your phone service are both being provided via a connection to a telephone line, then you must have a DSL or ADSL filtering device between the wall jack and the telephone jack on the mutifunction printer/ fax / etc., otherwise the fax function cannot work.
The telephone jack(s) on the computer is(are) for a dial-up modem,. It may support faxing with it too.
You are supposed to use a DSL or ADSL filtering device between the wall jack and ALL devices connected to the the same telephone line that you get DSL or ADSL internet service from, EXCEPT for the high speed DSL or ADSL modem, or combo router / modem.