How do I map contact phone fields?

Salesforce Contacts have several standard Phone fields available:

• Phone - This field may also be labeled "Business Phone," as that was its original label before Salesforce changed it. Note: in our field mapping screens, the Phone field is called  Business Phone

• Mobile
• Other Phone 
• Home Phone - This field is not always automatically enabled. It may need to be made available to users via field-level security, even to system administrators.
• Asst Phone

More on standard contact and lead fields