Do they provide your phoneline also? Or are they just the ISP and is the line operated by another company? Then most likely they'll say it's that company.
I'm afraid that some tech will have to come with another modem to see if it's the modem that needs to be replaced or the line that needs to be repaired.
Kees
When using the telephone, there is a hissing background noise & sometimes a squeal & beeps. The noise goes away when the modem is unplugged from the phone jack.
All phones have filters on them. The modem is plugged into a phone jack that is direct wired to the NID.
This noise started a few months ago after some windstorms.
Technical info:
Westell G90-610015-20 ADSL+ MODEM (3 yrs old & provided by Verizon. I think I own it, not leased. Plugged directly into the electric outlet & phone jack.)
Belkin F7D1301 v1 Basic Wireless Router (2 yrs old)
HP Photosmart Premium C309g-m (3 yrs old)
HP Pavilion BK290AA-ABA s5304y (3 yrs old)
HP G62 Notebook PC (1 yr old)
Verizon DSL
What should be done to get rid of the noise? Thanks.

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