ONT has started constantly dropping connection to router (CAT5)

[patrickhenrypdx]

My system is Verizon ONT on outside wall->CAT5->personal router (not verizon's).

My system has been essentially faultless for 3 years but over the last month it has begun constantly dropping the connection between the ONT and my router.  Power cycling the ONT always fixes the issue.  Sometimes, but not always, power cycling my router fixes the issue.

When the connection drops, none of my wifi devices get internet.  (I don't have any devices hardwired (CAT5) to my router.)

I've tried two different routers (both of which were known to work well during the 3 years of faultless uptime) but the issue is the same regardless of the router.

Where do I start to figure out what is going on?

tia,

[CRobGauth]

What model ONT do you have?

[patrickhenrypdx · Accepted solution]

@CRobGauth, Verizon came out and replaced the ONT and it appears that the problem is solved.  Thanks for your reply!