Problem with FXO



I have problems in a not central area with the provider of the analog trunk.
I like to know if anyone have an idea how can i make a workaround to solve this. Maybe some feature in the UCM6208 or a black box before the FXO Port.
The Analog Trunk present unstable voltage in Standby like this video
We can make calls normally, but under this state we receive intermitent calls. But if we use in parallel to a regular phone we receive all the call. Its the PBX that its going crazy with this bad FXO and lost calls.
Any idea?


If anyone has a product to fix that, these folks will -


Thank you! I will contact and post any result.