What is a possible solution to this problem?

You have received a trouble ticket stating that an executive with an account at a bank cannot
retrieve account information by phone. When the executive calls the bank, the call is answered
and the executive is prompted to enter the account code. However, the bank does not seem to
recognize the DTMF tones and disconnects the call.
What is a possible solution to this problem?

A.
Configure the voice rtp send-recv command in the gateway.

B.
Set the Cisco Unified CallManager service parameter ToSendH225UserInfoMsg to True.

C.
Configure the progress_ind setup enable 3 command under the gateway VoIP dial peer.

D.
Configure the progress_ind alert enable 8 command under the gateway POTS dial peer.

Explanation:
Using thevoice rtp send-recvCommand to Establish Early Two-Way Audio
The voice path is established in the backward direction as soon as the RTP stream is started. The
forward audio path is not cut through until the Cisco IOS gateway receives a connect message
from the remote end. In some cases it is necessary to establish a two-way audio path as soon as
the RTP channel is opened, before the connect message is received. To achieve this, use
thevoice rtp send-recvglobal configuration command you can have a situation where you only
have a 1 way path to listen to announcements, it’s usually used to fix 1-way audio issues when

they’re not supposed to happen intentionally Also helps on DTMF issues