You are a business manager of a commercial company, and you may receive calls from the
customers all the time. One day, when you were having dinner at the office canteen, you
received a call from a customer who wanted to complete a business transaction with you.
With the help of the Cisco Unified Communications System, your current location was
rerouted automatically. Then, you could talk on the phone with your customer on the way to
your office. After you arrived at your office, you transparently transferred the call to the desk
phone and completed the transaction on your computer. Which of the following services can
help you complete the whole process?

A.
location-based services

B.
Intrusion Protection Services

C.
guest access

D.
voice-over-Wi-Fi