Insert data from one DB table to another DB table

Question

I have urgent issue in my application. Can you please help me for the following scenario. 

I have two table with same schema, In different server. I Need to insert into table from one database to another database table based on user criteria. 

Before insert i want to check record is already exists in the designation table or not. 

If the records are exists don't want to insert the records. I need to insert only different records.