Users on your network report fast busy signals when they attempt to place calls.While troubleshooting, you verify that codecs are configured correctly and determine that the network carries up to 200 concurrent calls different times of the day.
Which two actions correct the problem?

A.	Add more Cisco Unified Communications Manager to cluster
B.	Add more DSPs to the NM-HD
C.	Increase the number of sessions to the maximum allowed by system resources
D.	Implement an SRST-CME gateway to improve resource allocation
E.	Add a cisco catalyst switch to the environment to increase port density
F.	Bind the network PRIs to add additional bandwidth