1. Solve it on first contact (First Contact Resolution).
2. Own it till resolved, closed when validated by the customer (Total Contact Ownership).
3. Eliminate the problem (Problem Management/Root Cause Analysis).
4. Deflect to another channel (Self-service, email or chat).
5. A balanced approach to measuring performance and cost-effectiveness (Driving Continuous Improvement).
Read his article: First Contact Resolution: The Performance Driver!