Inbound Call center Profit Book

Inbound call center: Why and Why not?
Every successful business reaches a point where they can no longer handle all of their customer requests or calls on their own.
There are many reasons for the same. Some of them are:
1. Too many customers calling at the same time.
2. Customers calling at non-operational hours.
3. You are in an important business meeting.
Now what are the options that you have as a business owner?
1. Have an answering machine or voice mail to greet your customers.
2. Hire more people in your office to attend inbound calls.
3. Outsource your requirement to an inbound call center.