Which three services can be provided by Cisco ISR G2 access routers? (Choose three.)

A.
Cisco WAAS engine

B.
NX-based services

C.
video control unit services

D.
IP telephony with SIP trunking

E.
zone-based firewalling

F.
integrated video conferences

Explanation:

http://www.cisco.com/en/US/prod/collateral/routers/ps10537/white_paper_c11-636065.html