MySQL : How update record if exists else insert record?

Question

1.all column needed are in same table
2. column are (person_id, telephone_type, telephone_number)
3. table name = phonebook
4. update required match (person_ id, telephone_type)
5. insert required (person_ id, telephone_type, telephone_number)

Any suggestion / answers . Thanks for helping $)

Answer 1

@Serena
how do i check record is exixsted before update. if not existed then, insert the record.

Answer 2

all column are varchar type