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Arris Tm722g Cable Modem Docsis 3.0

4.3 out of 5 stars 433 customer reviews
| 90 answered questions

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  • Certified 1-Year Warranty
  • Works on Comcast's network (and more!)
  • Includes its own internal battery backup in the modem
  • Meets DOCSIS 3.0 specifications as well as backward compatibility with existing DOCSIS 2.0, 1.1 and 1.0 networksr-supplied Ethernet hubs)
  • Unlimited local and nationwide long distance calling
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Product Description

The Touchstone TM722g DOCSIS 3.0 (EMTA) that delivers two lines of primary line Voice over IP (VOIP), Ultra-high speed data access, and two battery pack options to support telephony service during power outages. With DOCSIS 3.0 channel bonding, cable operators can offer data services at speeds greater than 150 Mbps to their subscribers to compete against VDSL and Fiber to the home threats. The TM722g is backwards compatible with legacy DOCSIS 1.0, 1.1, and 2.0 cable equipment and can be deployed without service interruption.

Product Information

Product Dimensions 21 x 4 x 18 inches
Item Weight 2.8 pounds
Shipping Weight 2.6 pounds
Manufacturer Arris
Item model number TM722G/CT
Customer Reviews
4.3 out of 5 stars 433 customer reviews

4.3 out of 5 stars
Best Sellers Rank #116 in Computers & Accessories > Networking Products > Modems
Date first available at Amazon.com June 18, 2011

Warranty & Support

Product Warranty: For warranty information about this product, please click here


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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By T. Pultz on July 4, 2012
These modems are hard to find. I wish I had seen this at Amazon before purchasing it elsewhere because Amazon has the best price. A few weeks ago I searched for the newer TM822G and was hoping to find that but I guess I missed the TM722G if it was available then, which I don't think it was. I ended up purchasing the Xfinity self installation kit from Best Buy for $149.99 and that included the TM722G plus a few misc. cables, backup battery, installation instructions and user guide. The voicemail user guide booklet is nice to have because it explains all the options, but the information could probably be downloaded from Comcast or picked up at the Comcast service center if you choose to purchase this unit from Amazon.

I initially used a rental Comcast TM702G for about a week before deciding to purchse my own modem, so swapping the modems was easy. All I did was call tech support to provide the proper MAC addresses and we got it up and running in about 30 minutes. Although I have not measured any download speeds yet it seems equally as fast as my previous Motorola DOCSIS 3.0.

The TM722G is a much nicer looking modem compared to the older TM702G, and so far it works great and I'm happy with the purchase. The gigabit Ethernet port is nice because I have it connected to a Buffalo Airstation WZR-D1800H wireless gigabit router. The voice quality is perfect and the voicemail system is much better than the T-Mobile at Home service I previously used.

The modem does not generate much heat so it runs nice and cool, which is good because I'm planning to mount it in my Leviton Structured Media Center I'm setting up to feed CATV, Internet and Phone throughout the house.
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I bought this modem to replace my Comcast leased modem and like many others had issues with the installation but was able to get both internet and phone working. Step 5 was key and I couldn't find it spelled out in any of the forums so I wanted to spread the good word.

1. Power down computer, router (if you have one), and old modem.
2. Unplug old modem.
3. Plug in new modem and power up modem, router, computer.
4. Open web browser to access the Comcast "garden" page and activate new modem. This didn't open in internet explorer but chrome worked. This ONLY activated the internet. Phone and backup battery lights did not yet light-up on the new modem.
5. Once internet is working, log into Comcast and online chat with a rep for phone support - I went for "no dial tone" support. Tell them you replaced one Comcast telephony modem with another Comcast telephony modem (in my case, I exchanged for the same exact model) and are getting no dial tone so there appears to be a provisioning problem. Ask them to verify the correct MAC addresses in the system. E, C, MTA, and USB were the various MAC addresses on my modem and only the E MAC address was correctly listed in their system. They'll probably need to do some diagnostics/pinging/resetting along the way but at the end of the call, for the first time in 3 reps, everything was working correctly. I tried 2 phone reps prior to the chat rep. Both claimed there was nothing they could do and would need to send a tech for $40. I've always had better luck with the chat reps, possibly because you can save the transcript, which I do!
6. After you return your leased modem, just make sure to check your bills. I've heard they like to throw the rental back onto your bill. Sad.
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Verified Purchase
I purchased this modem after reading the reviews on Amazon. The reviews regarding other modems were mixed especially when dealing with Comcast. After I got the Arris 722G modem, I tried working with Comcast in providing the S/N and MAC addresses. After 3 hours later, we finally got everything to work. One thing that would've made this experience better would've been if all the Comcast Technical Support personnel had the same troubleshooting process. After going through three support personnel just for the broadband connection, the important thing to keep in mind is to disconnect all the wireless connection and get the cable modem box and telephone service to work first without having the connections go through wireless router or printer/fax devices. Also, Comcast in our area has an issue of not working with one group to get the broadband and telephone service to work simultaneously. Once the cable modem was working, then I had to contact another department to activate the phone service along with the voice mail service. Hopefully, Comcast streamlines this entire process and can work with a single individual or at least easily transfer the current situation of what has transpired with the other departments so that consumers don't repeat the same information over and over again.

Besides, the issues dealing with Comast, Arris TM722G worked fine and no issues. Initially, I was a bit apprehensive since this was a refurbished box. However, it seems to be working fine for now and can get higher broadband speed with a Docsis 3.0 supported modem. Actually, I can see speed difference compared to my previouse Arris 602 modem. Best of all, I don't need to pay Comcast monthly leasing fee for the modem equipment.
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