Troubleshooting modem issues - Value Line notebooks
Some of these steps may not apply to your computer. Test the modem after performing each step.
Verify that the modem line is connected to a RJ-11 phone jack
and not to a RJ-45 network port
Verify that the modem line is connected directly to a wall outlet. Eliminate any devices like a Telephone, answering machine, surge protector, or line splitter. Test with another phone cable and a different wall outlet, if available.
Verify the presence of a strong dial tone on the same telephone line that modem is attempting to dial out on by connecting a telephone handset. Note: A no dial tone error message may be due to the software not handling a certain dial tone rather than a specific hardware fault. Around the world there is a variance in the signal quality of the dial tone which causes a report of no dial tone detection. Disable the dial tone detection to correct no dial tone detected by modem error.
Remove and then reconnect the modem card. Note: Click the index link to view installation and removal procedures or movies.
Verify that no other software that accesses COM ports is running when the operating system loads (for example: fax software, synchronizing software for handheld devices, communication software, or external pointing devices that require a COM port).