HP Notebook PC - Manual (Page 20)

Getting Started with Your Notebook
Setting Up Your Notebook
Step 3: Connect a phone line
1. Make sure the telephone line is an analog line, sometimes called a data line.
(You must not use a digital line.)
2. Connect the telephone cord (RJ-11) into a telephone jack.
3. Plug the other end of the phone cord into the RJ-11 modem jack on the notebook.
For details about using the modem, including AT commands, see the Reference
Guide on the Documentation Library CD.
12 Startup Guide