Thanks.
Checked with xfinity, my isp is 1100. I did install an extender my strength on the back camera is 70 although the front camera is 83. Our issue is the back camera blacks out, alarm company indicates its the strength of the signal. Electrical power is excellent. Xfinity suggested a modem upgrade since my current unit is at 800 strength when xfinity is pushing out 1100.
appreciate any help
Xfinity has approved speeds of up to 863 Mbps for this modem model. If you’ve subscribed to a 1100 Mbps plan, please note that this model may not support those speeds as per Xfinity’s specifications. In this case, you may either downgrade your speed plan or upgrade to a modem that is approved for higher speeds.
For more details, please refer to the link below which lists the Xfinity-approved modem models and their corresponding speed plans.
https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2025.03.25%20Full%20List%20of%20Compatible%20Devices.pdf
If you choose a speed plan that your modem cannot support, it may lead to internet connectivity issues.