After adding SRST functionality the SRST does not work. After reviewing the exhibits, which of the following reasons could be causing this failure?

Scenario: There are two call control systems in this item. The Cisco UCM is controlling the DX650. the Cisco Jabber for Windows Client, and the 9971 Video IP Phone. The Cisco VCS and TMS controll the the Cisco TelePresence MCU, and the Cisco Jabber TelePresence for Windows

DP:

Locations:

CSS:

SRST:

SRST-BR2-Config:

BR2 Config:

SESTPSTNCall:

After adding SRST functionality the SRST does not work. After reviewing the exhibits, which of the following reasons could be causing this failure?
A . Device Pool cannot be default.
B . The Cisco UCM is pointing to the wrong IPv4 address of the BR router.
C . The router does not support SRS
E . The SRST enabled router is not configured correctly.

Answer: A