Cisco DPC3208 User Manual page 62

Chapter 5 Troubleshooting the DOCSIS Cable Modem
working here but does not work at other locations in the home, a professional
may need to diagnose and repair a problem with your telephone wiring.
Verify that the telephone company has removed the previous telephone service

from your home telephone wiring.
Your telephone service may not be enabled from your cable telephony service

provider. Contact your cable telephony service provider for more information.
38 4027620 Rev A