I recently purchased an Arris TM822R modem. Phones are all working, but no caller ID...every call is labeled as "unknown".
Your new modem may not have been properly activated or provisioned. Try calling Xfinity tech support at
If the online activation does not succeed, call customer support: 1-800-COMCAST (1-800-266-2278) or 1-800-XFINITY (1-800-934-6489)
Or Try calling 1-855-652-3446. That is their device activation line.
Hello agisi1, thank you for posting your resolution with us here. I am glad everything is working properly for you, feel free to reach back out to me here if you need anything else. Have a good day.