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Cox Phone Upgrade Incompatible with Home Security System - Still


It appears that Cox is still doing nothing to address this, as we just had our phone system upgraded by Cox and our alarm system lost connectivity with the alarm company. This is completely unacceptable. To perform a mandatory migration that requires customers to incur additional alarm service costs, not only a one time equipment charge but an additional recurring service charge, because their upgrade orphans the standard POTS connectivity used by all alarm companies (see related 2017 forum post on "Cox Phone Upgrade Incompatible with Home Security System").

To not give a choice - poor customer service issue #1.

To not give notice of the impact - poor customer service issue #2.

To not help provide a resolution that doesn't cost the customer initially as well as continually-forever - poor customer service issue #3.

Time after time Cox continues to lower the bar on customer service and expectations.

  • Hi Chandler Customer,

    I regret to hear that you are experiencing issues beyond the migration. The transformation allowed us to replace outdated equipment and should not have changed your monthly bill. Most importantly the migration allows us to bring new features to your home in the near future.
    Cox sent out various notifications to customers via letters, emails and phone calls advising of the planned migration. We want you to enjoy your services! I would like to review your account and also look into scheduling a technician to work with you in finding a solution. Please send me an email to with your full name and service address. I look forward to hearing from you soon.
  • Cox digital phone works fine with any security system. If your alarm company doesn't know how, I say get a new alarm company. VOIP/SIP has been the standard for almost 2 decades now. It's just a matter of wiring it a bit differently.

    1. They can't give a choice because they can't leave a entire outdated system in place just for a few users.

    2. They did give notice. Do you have a email address on file with them? At-least I got notice.

    3. The solution is very simple. It's usually just a matter of changing where you connect the phone line feeding the system. Before it came from the demarc, now it comes internally from the phone modem. Any security technician not knowing this must not have worked on a system in 15-20 years.

    See this post another user did which breaks down the issue technically. I almost wonder if they made the post because of this post.

  • Seems like it should be up to Cox to make it right, not the alarm company.  With the old wiring, the line went from the demarc to the alarm panel which would have a RJ-31 jack.  The line would go into the alarm system on pins 4 and 5, and come back out on pins 1 and 8 to return to the house wiring connections by the demarc.  By moving the demarc to the modem, wiring for the alarm would need to go on a dedicated pair from the modem back out to the old demarc, then to the alarm and house wiring as before.  As many complaints as there have been on this board it would appear that Cox's installers only know how to install modems and walk away.

  • "Seems like it should be up to Cox to make it right, not the alarm company. "

    This is a horrible idea IMO. Cox technicians know almost nothing about alarms. This is like saying Cox should go out to everyone's house that has a entertainment system and difficulty hooking up their VCR to mini boxes after the encryption transition. Good in principle, but unrealistic and likely to cause more problems then it fixes. Changes in technology occur, and you pay your security company to adapt. 

    "As many complaints as there have been on this board it would appear that Cox's installers only know how to install modems and walk away."

    Yea, that's all they should have to know. Do security system installers know how to install coaxial cabling? No, then why should a Cox technician know about line seizure circuits? Did the security system people also complain when phone companies changed to tone instead of pulse? IMO most of the problems stem from security technicians not understanding the basics you put forth. Not all installers have 40 years experiance like you. I bet most don't even know what a RJ-31 jack is. 

    BTW, who still uses POTS for security? Isn't cellular the norm now?

  • Cox is putting this 'upgrade' forth as a turnkey solution, with as little disruption to the customer's operations as possible.  I've installed small business systems all the way up to PBX's of over a thousand phones, and the idea is to have a boring day on Monday after the cutover, having disrupted the customer's business operations as little as possible.  Alarm lines are usually one of the first considerations.  As many complaints as there are on this board, not one of them are cell line oriented or network related, so Cox needs to get their stuff together and do it right.  It is not that complicated.