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The TM822G is a terrific Docsis 3.0 modem. I get 8 solid downstream channels and 3 upstream. My service is the Comcast 75 Mbps and I get about 90 Mbps down and 6.0 Mbps up. Installation of the one that I got was problematic for two reasons, both addressable: 1. It was a used modem that had been previously provisioned on the Comcast network, thus the guided provisioning that should have occurred didn't work. When I called Comcast, apparently they couldn't tell that a modem was previously provisioned on their network. So I spent a lot of time with a pleasant Comcast person and then gave up. When I called back and told them it had been previously provisioned, it took a while but it got set up successfully. 2. When I tried to get it working with my router, that didn't work. After numerous attempts on my own, I then spent some time with a not very knowledgeable Comcast person and then gave up. I was about ready to box it up and return it when I came across some notes from the last time that I had problems setting up a new router with my Comcast modem. I followed them to a T and the modem and router connected on the first try. They are at below. (Note: After my initial router set up I have not had to follow these instructions. __________________ To reset Comcast modem/wireless Router connection 1. Unplug the Ethernet cable that connects the Comcast modem and the wireless router. 2. Reset the Comcast modem by using the paper clip to depress the switch in the small round hole on the bottom of the modem. 3. After the Comcast Modem restarts (once two lights come on) immediately plug the Ethernet cable back in. Then wait a few minutes for them to establish communication. Note: This will not work if you let the modem finish its restart or if you plug the Ethernet cable in before it begins its restart.Read full review
Verified purchase: Yes | Condition: Pre-owned
My ISP (WAVE Broadband) would not support the telephony function of the modem, so I never got a chance to try it out. I was told that it would support my internet, but no phone service. Apparently, the only place to get an internet/telephony modem for WAVE is from WAVE.
Verified purchase: Yes | Condition: Pre-owned
Optimum had us down, for only 10 minutes, the largest part of which was the physical cable switching and synchronizing of the new modem, to their system. After that, we were back up, at a 1Gb transfer rate. This is a perfect modem, for those who are tired of paying Optimum that monthly rental fee, for the modem they supply. All you need do is call Optimum, give them the CMAC number, printed on the back of your new modem, then swap the power and data cables, all of which are in identical positions to their old modem. They do the rest, remotely, to activate the new modem.
Verified purchase: Yes | Condition: New
Good modem with VOIP support. It also features and lithium battery backup that can keep it going for hours in case of a sever power failure in the mains. There is nothing wrong with setting up a small air fan near this modem (and/or your wifi router, too). Such fan would keep your Internet/LAN devices working longer AND noticeably more stable.
Verified purchase: Yes | Condition: Pre-owned
It works fine with my internet provider Optimum in NJ. However, sometimes there is a lag or speed reduction that I think it is the Optimum problem not the product issue since I have tested multiple modems with different brands. Optimum has certified only a few brands and models and this modem is one of them. Although it works better than others for continuous and reliable connection, but still it has some issues with Optimum. Nonetheless, this modem works better than rivals with Optimum.
Verified purchase: Yes | Condition: Pre-owned
