Unable to hear incoming callers on wireless home phone LVP2

I have had Verizon Wireless home phone for 3 years without any problems until very recently. On several occasions I was unable to hear the incoming caller and they were not able to hear me. The phone rings like normal, they hear a ringing signal on their end but when I pick up, there is no one on the line. They are talking but I can't hear them and they can't hear me. This never happens on outgoing calls.

However, the extremely odd thing is that this only happens with calls from certain carriers. The problem only happens with incoming T-Mobile and AT&T Wireless calls. This issue does not happen with other carriers. While the issue is going on, I am able to receive calls from Verizon Wireless, Google Voice and AT&T landlines with no problem at all. If I reset the device the problem is corrected.

But it must not be the device because clearly people from specific carriers get through while other ones do not. And it must not be the other carrier with since the problem affects several carriers. So what can it be? Could it be some kind of weird Verizon interconnection to other carriers? But then, why does the problem correct itself when I turn the device on and off? Do I need a new SIM card?

Accepted answers

SynthpopAddict

@dm28501
wrote:
But it's extremely odd because it only affects inbound calls from T-Mobile and AT&T wireless customers (incoming calls from AT&T landlines are not affected). And that it only affects the LVP2 and doesn't affect incoming calls to other Verizon devices.

I'm wondering if the problem is because the LVP2 is a device which enables a landline phone to use wireless network technology, but it must be converting something in the signal received in order for the landline phone to work. Without getting too technical...

AT&T and T-Mobile traditionally used GSM technology in their wireless network, while Verizon was the one oddball using CDMA technology in their wireless network. With 4G and 5G technology being the norm now, the GSM and CDMA are becoming less important since it applied to 2G and 3G which are now defunct in the US. But most cell phones manufactured today still support both CDMA and GSM because other parts of the world still use GSM and manufacturers want to make sure their US-version cell phones work with Verizon.

However, if the LVP2 is still "translating" the wireless signal into something different in order to work with a landline phone, then it could be causing a problem when an incoming call is originating from a source which somewhere had GSM tech in it? AT&T landline service doesn't use their wireless network at all which is why the LVP2 doesn't have a problem with it.

All comments

Verizon_Support

We definitely want to help you with your concern regarding your home phone service. Were there any changes made to the device or your account before this started? How long does it stay fixed when you reset the device? ~Peter

dm28501

Thank you for replying. The problem is rare. It has happened maybe 1 to 2x a month over the past 3 months. And when I reset the device, it stays fixed for a few weeks. And if I don't reset the device, the problem does resolve itself within 10-15 minutes. It's not a major issue because it's rare and we can call the person back right away.

But it's extremely odd because it only affects inbound calls from T-Mobile and AT&T wireless customers (incoming calls from AT&T landlines are not affected). And that it only affects the LVP2 and doesn't affect incoming calls to other Verizon devices.

I've tried trouble shooting, having other people call me to see which calls go through. And it's always the same, everyone gets through except for T-Mobile and AT&T wireless customers. We haven't made any change to either the device nor to our Verizon account.

If it happens again, I will trying some trouble shooting again. For example, if I don't pick up on the first ring or if I let it keep ringing, will it go to voicemail? Any suggestions you could give me would be greatly appreciated.

Verizon_Support

We appreciate the additional details. It is definitely unusual as you mentioned. Is this happening with specific numbers or any numbers?

~Freddy

SynthpopAddict

@dm28501
wrote:
But it's extremely odd because it only affects inbound calls from T-Mobile and AT&T wireless customers (incoming calls from AT&T landlines are not affected). And that it only affects the LVP2 and doesn't affect incoming calls to other Verizon devices.

dm28501

That sounds logical. The calls are obviously going through but there is no sound on either end when this issue pops up. So it seems there could be some type of inability to convert the signal back into voice. And maybe it only happens occasionally because the Verizon towers could be busy and somehow processing the call in a different way. Since the issue is relatively new, I suspect it could also be some time of soft ware update either in the device itself or the Verizon towers. At any rate, thanks for your input. Hopefully it will resolve itself.

Verizon_Support

@dm28501
wrote: Thank you for replying. The problem is rare. It has happened maybe 1 to 2x a month over the past 3 months. And when I reset the device, it stays fixed for a few weeks. And if I don't reset the device, the problem does resolve itself within 10-15 minutes. It's not a major issue because it's rare and we can call the person back right away.

Thank you for sharing those additional details with us. Is it every call that is incoming from the other wireless carriers or is it intermittant? How long after the reset does it take for the issue to return? Also, additional troubleshooting steps can be found using the link below.

https://www.verizon.com/support/devices/

-Andi