Hi there and welcome
Can you check on the bottom of the base unit for the model please
and also, with which phone provider are you with? eg: AT&T, Verizon?
Your voicemail is performed by Verizon, not on the phone itself
You dial 1.***-***-**** to access your voicemail and follow the prompts on the phone to set it up and retrieve voicemails.
This guide will also lead you through this
If you have any problems, or would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.