which of these could be causing this issue?

When the Cisco Jabber usertries to call extension 3501, Cisco Jabber never places the call No
errors or messages are seen and no reordertone is heard. Assuming that the Cisco Jabber calling
search space is configured correctly in Cisco Unified Communications Manager, which of these
could be causing this issue?

A.
CTIforthe end user must be enabled.

B.
Cisco Jabber must be reconfigured for desktop mode.

C.
The username or password is misconfigured in Cisco Jabber.

D.
The Cisco Jabber Advanced Phone Settings are misconfigured.

E.
Cisco Jabber does not have the correct phone button template and hence has not registered to
the Cisco Unified Communications Manager.

F.
The called user presence status is unknown.

G.
The called user has not been added as a contact in Cisco Jabber.