Which statement about AAR functionality is true?
![PrepAway - Latest Free Exam Questions & Answers](https://www.briefmenow.org/img/pa5.jpg)
A.
AAR reroutes calls through the PSTN upon WAN failure.
B.
AAR reroutes calls through the PSTN when Cisco Unified Communications Manager CAC blocks a
call.
C.
AAR reroutes calls through the WAN when the PSTN connection fails.
D.
AAR reroutes calls to another phone number when a Cisco IP Phone unregisters.