I am not too keen on the idea of having the Cisco DPC3010 dumped on us - this modem has been obsoleted by Cisco. https://www.cisco.com/c/en/us/obsolete/video/cable-modem-model-dpc3010-epc3010.html

I understand this modem was specified because it has the voice gateway and battery system and is free BUT it is still obsolete!!!

If I were to use the Arris SVG2482AC, isn't this the same as the Arris TG2472.  I believe the TG2472 is used by the Cox Contour Panoramic system but I think Arris SVG2482AC is commercial version? The SVG2482AC has a battery backup voice gateway as well

Old Jedi said:

There was another surprising claim in this thread.  When Cox did my conversion to the modem, they disconnected all of my old phone jacks.  The only way I can use a phone is to plug it into the modem.  I lost my fax machine which was not where the modem was, and I had to move my base station for the cordless phones to where the modem was installed.

Your Install was NOT done correctly, call Cox and have them come out and redo the install.  All my jacks are active, I have a FAX, Answering Machine and a Monitored Alarm panel with line-seizure, and everything works exactly the same as when I had the outdoor NIU.

@Old jedi,

We can certainly look into this issue for you. Please send us an email with your account information and a link to this thread to cox.help@cox.com so we can help. 

Thanks,

Allan - Cox Support Forums Moderator.

There was another surprising claim in this thread.  When Cox did my conversion to the modem, they disconnected all of my old phone jacks.  The only way I can use a phone is to plug it into the modem.  I lost my fax machine which was not where the modem was, and I had to move my base station for the cordless phones to where the modem was installed.

I just spoke with the Cox telephone team again (on the phone number they tell you to call for the conversion).

I learned a little bit more:

• They do know your cutoff date for conversion. People in the forum have been unable to get date information from Cox, myself included. I ended up speaking with a supervisor, and she was able to tell me my conversion window, and it's comforting. My conversion wave started in January 2018 and it ends in December 2019 (yes, 2019, not 2018), so at least I know my phone isn't going to get cut off next month and I have some time to figure out wiring issues, etc. The supervisor told me that some Cox people don't know where to look for the information, but it is on your account. So, if you can't get it, ask for a supervisor. That's the most helpful information Cox has been able to give me. Hooray! I thanked the supervisor. 
• I also found out that the conversion deadlines have been extended a few times. My guess is they aren't getting people converted as quickly as they had planned.
• Apparently they do offer a battery for the Arris TM3402. It's also $29.95. The supervisor told me they are required by law to provide a battery backup option for all landline modems.
• She said many landline customers preferred having a separate telephone and internet modem and it's no problem to set it up that way if I want to do that.
• The supervisor also said the modems would handle alarm and fax signals (something most Cox people have avoided answering). I'm starting to believe it might work (as long as it's wired properly). I've been doing some searches on the topic. I don't remember all the technical things I've read about how the calls are handled, but the cable company VOIP systems can have higher quality than what you'd get with a service like Vonage or Ooma. The age of your alarm system might also have an impact. 
• The supervisor said she's only seen one case where a tech wasn't able to convert a residence to the new system. (I'll likely be the second unless I rewire things before the tech arrives). I couldn't get any comment about whether their techs would run wires inside of walls, etc. I'm pretty sure they won't. Maybe I could have the tech come out and see if he's baffled or not.

Anyway...I hope that's helpful information to some people. I'm glad to know I have a little bit of breathing room on the conversion. That will give me some time to figure out what to do with my wiring.

bryaninphx said:

I have never had an Issue with my Cisco DPQ3212 eMTA, I rarely have to reboot it, and that is usually for Internet related issues not phone issues.  I switched from the outdoor ARRIS NIU to the indoor eMTA several years ago.  My entire home-office is on a Tripp Lite 1500VA 900W UPS Battery Back Up this UPS will keep me up for 45mins w/ the PC running (~125W) or several hours with the PC in sleep mode.

Looks like Cox could put the ARRIS TM3402A in to FULL bridge mode.Then you would use LAN / Ethernet port # 1 to connect your own router.  Not sure if Cox is willing to do this or not.

Thank you bryaninphx for your report on converting from the Arris Cornerstone NIU. It's comforting to hear from someone and that it's working well.

My understanding is that if you want to use the TM3402 as your cable modem, you can do so. Although it has 4 ethernet ports on it, only port #1 works, so you need to plug it into a router unless you only have one device.

I was informed today by a Cox DOCSIS Engineer in Atlanta that the ARRIS TM3402A eMTA is a standalone device and does NOT have any router capabilities.  The customer can and does need to use their own router with this device.

EvaFam said:

I'm not Cox, but from what I've heard, you can have the option of using the Cox phone modem as your internet router, or keeping your existing router. I imagine they'd just put in a splitter and connect both devices to cable.

I'm currently contemplating the pros and cons of each approach. One pro is that the routers can be reset individually. Therefore, if your internet is out and you need to reset the router, it doesn't take out your phone, and vice-versa. 

From my experience, I end up power cycling my cable modem many times a year to get the internet to work, and fewer times a year I need to use the automated Cox reset thing. In contrast, my current Cornerstone NIU landline unit never ever has problems and the phone service rarely ever goes out. This is why I cringe to think of moving to Cox's new system: will it be constant resetting of the phone modem to keep my landline running? Much as I'd prefer to have less equipment, I'm leaning toward separate modems for phone and internet in the hopes that the phone system might be more reliable. I just have to figure out where to put yet another piece of equipment (and rewire my house to support the new location...thanks Cox).

I have never had an Issue with my Cisco DPQ3212 eMTA, I rarely have to reboot it, and that is usually for Internet related issues not phone issues.  I switched from the outdoor ARRIS NIU to the indoor eMTA several years ago.  My entire home-office is on a Tripp Lite 1500VA 900W UPS Battery Back Up this UPS will keep me up for 45mins w/ the PC running (~125W) or several hours with the PC in sleep mode.

I already have 5 active Coax outlets, with marginal signals often in the summer, so splitting the Coax again between the eMTA and a separate cable modem is not something I what to do. I could probably get down to 4 active outlets or add an Amp, but that is not my first choice.

If the ARRIS TM3402A eMTA can be used as a WAN port, not using it as a router, that would be a different story.

My question still has not been answered, regarding this, however I don't believe it can be used as a Stand Alone modem, bypassing its router function, someone but please correct me if I am wrong.

EDIT: Comcast will bypass the router function:
Looks like Cox could put the ARRIS TM3402A in to FULL bridge mode.Then you would use LAN / Ethernet port # 1 to connect your own router.  Not sure if Cox is willing to do this or not.