Thu, Sep 10, 2020 1:00 PM
Can I install a new faster non-telephony cable modem for better Internet service and connect my old telephony modem to it somehow for telephone/voice service?
8 m ago
Diamond Problem Solver
9 m ago
Our Internet and Voice service were split by during a service call quite a while ago using an ordinary coax cable splitter. This provides redundancy with an old TG852G just for Voice and a Motorola Surfboard 6580 for higher speed Blast internet and home network management. Even if one service goes out, we still have a fallback. And it's happened often enough to be tested here. Unless a storm drops telephone poles and cell towers all over. Like Isaisis.
The Arris CM1150V looks like a good current one-box solution, but it is pricey.
I just recently tried this, but there's issues with Comcast configuring my modem.
From the logs on the TM822G I was using for voice, it fails when the system tries to configure it.
However, Comcast isn't accepting the issue is on their end at face value (despite the logs indicating the issue).
Since they are in control of the fiirmware updates for the devices, I can't even update it myself.
Good luck and try to get a good technician.
Thanks to those who replied to my initial post. Since then I did an online live chat with Comcast tech support who said I can’t use more than one modem. I then talked in person to a Comcast field tech and by phone to Comcast tech support.
The field tech said he hadn’t configured separate telephony and cable modems for customers but that Comcast techs do it all the time for themselves, with what he called a modem exception in the Comcast system, and separate config files on the two modems so one is configured only for phone and the other is configured only for Internet, and a splitter on the line.
I then reached Comcast tech support by phone after discovering that I first had to go through the IVR system and allow them to reset my modem even though I didn’t need it, and then tell them that didn’t solve my problem. I then got right through by phone, and the rep told me right away that 2 modems are no problem, I just call them when I have my new non-telephony cable modem. They then configure my account for two modems, one for phone (the old modem), the other for Internet, and I schedule a $40 service call for a tech to do the physical setup. It’s a bit disturbing to hear that Comcast couldn’t configure bolohead’s TM822G modem (the same model I have) for phone only. Bolohead should escalate to Level 2 or even Level 3 tech support if necessary if not already done. My experience with Comcast tech support over the last couple of years has been very good unlike the bad old days.
I plan to try this myself and will report whether successful.
Thanks to durgin99 for suggesting the CM1150V (which I think is a Netgear product, not Arris) as a good one box solution (telephony and Internet), but it is pricey at $250 and would defeat the whole purpose of using an existing old but perfectly functional telephony modem for phone only and a good new Internet only DOCSIS 3.1 cable modem such as the Motorola MB8600 ($160) or Arris SB8200 ($149), neither with the defective Intel Puma chipset.
Please update the thread when you are able (or unable) to get your setup working.
Currently, I'm still waiting for a tech call, since my TM822G is failing to be provisioned for voice still.
Report on Installing 2 Modems, 1 for Voice (telephony), 1 for Internet: Success. Briefly: This morning Comcast field technician came ($40 service call) and:
I then tested both my phone (got a dial tone) and my Internet and Wi-Fi service (it worked).
I learned that “boot files” are configuration files that the Comcast system pushes to customers’ cable modems when they connect to the Comcast system and control whether the modem functions (or tries to function) as a telephony only modem or an Internet only modem or both.
“Firmware Name: TS0901103M2AS_112019_MODEL_7_8_PC20CT”
“Firmware Build Time: Wed Nov 20 14:16:51 EST2019”
Copyright notice: “ARRIS Enterprises, Inc. 2019 All rights reserved”
If I can be of further help, please advise.