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Forum Discussion
CM1000 internet speed capped at 20Mbps
Modem will not exceed 20 Mbps. I have power cycled more times than I can count. Tried multiple computers (desktops and laptops). All either less or capped at 20 Mbps. I have cleaned the ethernet p...
So you have tested your PCs directly connected to the CM modem with out any external wifi routers connected?
Be sure the network adapter on our PCs are connecting at 1000Mpbs.
Be sure your using good quality LAN cables. CAT6 is recommended.
Have the ISP check the signal and line quality UP to the modem.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
1. Tested with direct cat 5+6+7 cables, both old and new. Known to go over 600mbps on another modem. I have had my ISP fully troubleshoot testing internet signal from the source, home wires, all the way to the modem and the only fail point was the modem itself not acknowledging the signal.
If a reset doesn't work to help the modem out I would presume the modem is faulty since you tested a different modem on the same line.
- Correct. Late last night on the same PC, using the same Ethernet cable on a different modem I was able to achieve a 960 Mbps speed. I believe the modem is faulty and needs to be replaced.