Refer to the exhibit.

What must be configured on the HQ Cisco Unified Communications Manager to allow HQ users to dial the SAF learned directory number pattern 3XXX?

A.
Route pattern 3XXX should be configured and made available to HQ users through the phone CSS.

B.
Route pattern 3XXX should be configured and made available to HQ phone users through the phone AAR CSS.

C.
The SAF partition assigned to the SAF learned patterns must be available to the HQ phone users through the phone CSS.

D.
The SAF partition assigned to the SAF learned patterns must be available to the HQ phone users through the phone AAR CSS.

E.
The SAF directory number pattern 3XXX will be made available to all users automatically as soon as the SAF partition is selected.

Explanation:
Incorrect answer: ABD
By adopting the SAF network service, the call control discovery feature allows Cisco Unified Communications Manager to advertise itself along with other key attributes.
Link:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmfeat/fscallcontroldiscove
ry.html