Thanks for reaching out to us through Cox Forums. We can certainly investigate this issue. I understand that we’ve reset the modem, have you connected your phone directly into the back of the modem to test the line? If there is still an issue with being heard with a direct connection to the modem, we may need to schedule a technician to further investigate the issue.
Ask Cox to send an in-house Cox tech or contract tech from another communications company to come and test your line and the Cox equipment at the pole with proper testing equipment. I had a phone issue that was only solved after a faulty tap was replaced at the pole.