Not sure if this will help you find what you are looking for but [https://www.nokia.com/en_int/phones/sites/default/files/user-guides/Nokia_3410_UG_en2.pdf|Here] is the pdf for your phone
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Not sure if this will help you find what you are looking for but [https://www.nokia.com/en_int/phones/sites/default/files/user-guides/Nokia_3410_UG_en2.pdf|Here] is the pdf for your phone. [https://answers.microsoft.com/en-us/mobiledevices/forum/mdasha/voice-mail-number/49f8d62e-419f-4e0c-a287-beb967b2621e|This] might also help you find what you need
Not sure if this will help you find what you are looking for but [https://www.nokia.com/en_int/phones/sites/default/files/user-guides/Nokia_3410_UG_en2.pdf|Here] is the pdf for your phone