Refer to the exhibit.

IT shows an H.323 gateway configuration in a Cisco Unified Communications Manager environment.
An inbound PSTN call to this H.323 gateway fails to connect to IP phone extension 2001. The PSTN
user hears a reorder tone. Debug isdn q931 on the H.323 gateway shows the correct called-party
number as 5015552001. Which two configuration changes can correct this issue? (Choose two.)

A.
Add port 1/0:23 to dial-peer voice 123 pots.

B.
Ensure that the Significant Digits for inbound calls on the H.323 gateway configuration is 4.

C.
Add a voice translation profile to truncate the number from 10 digits to 4 digits. Apply the voice
translation profile to the Voice-port. The configuration field “Significant Digits for inbound calls” is
left at default (All).

D.
Add the command h323-gateway voip id on interface vlan120.

E.
Change the destination-pattern on the dial-peer voice 23000 VoIP to 501501? and change the
Significant Digits for inbound calls to 4.

Explanation:
Choose the number of significant digits to collect, from 0 to 32. Cisco Unified Communications
Manager counts significant digits from the right (last digit) of the number that is called.
Link: http://cisco.biz/en/US/docs/voice_ip_comm/cucmbe/admin/8_6_1/ccmcfg/b06trunk.html