Troubleshooting - Calls go to a voicemail service, not the built in answering machine.

If you are using a Voicemail service through your telephone service provider and the calls immediately go to voicemail you will need to increase the ring count for voicemail.

Increasing the Voicemail ring count is a feature that is done through the telephone company. For detailed instructions on how to increase the voicemail ring count, kindly get in touch with your telephone service provider.

Also Check

• Make sure the answering machine is turned ON by pressing the [ ANSWER ON ] button till the indicator lights up on the base.
• Adjust the ring count on the answering machine to less than the voice mail (service from your telephone company) ring count.
• If you do not want to use the Voice mail service from your telephone company contact them to turn the service off.

Refer to What is Voicemail service and how to use with a telephone with an answering machine.