Modem
hardwareessential
networking deviceinternet connectionISP equipment
A device that modulates and demodulates signals for data transmission over telephone lines or cable systems.
Examples
Cable modem
Connects to coaxial cable from ISP, provides internet to router
Fiber ONT
Optical Network Terminal converts fiber light signals to ethernet
Common Misconceptions
- •Modem is different from router - modem connects to ISP, router creates local network
- •Combo modem/router units exist but separate devices offer more flexibility
Optimization Tips
Buy your own modem to avoid rental fees
Ensure modem supports your internet plan speed
Restart modem if experiencing connection issues
User Impact
Internet speed
Outdated modem can bottleneck your connection
Reliability
Modem issues affect entire home internet
Troubleshooting
Issue: No internet
Solution: Power cycle modem, check coax/fiber connection
Issue: Slow speeds
Solution: Verify modem compatibility with plan speed
Technical Details
Specification: DOCSIS 3.0 supports up to 1 Gbps, DOCSIS 3.1 supports up to 10 Gbps