Cox landline dropouts

I began with Cox landline in Gretna, Louisiana--near New Orleans--on October 8, 2013. Every day since then the service drops out at

least six times every 24 hours. Often it drops out as I'm talking with someone. You can imagine the annoyance. I have Cox for

Internet, too--the maximum residential speed. The modem that Cox supplied on October 8 is a Cisco DPO3925. Are other customers having