Enable Secure DTMF Cancellation

When you want to completely remove all traces of Dual-Tone Multi-Frequency (DTMF) information that the Oracle® Enterprise Session Border Controller (E-SBC) processes, enable secure-dtmf-cancellation to make the DTMF tones undetectable.

Secure-dtmf-cancellation requires that you also enable dtmf-in-audio. If dtmf-in-audio is not already enabled, you can enable both attributes in the following procedure.

1. Access the codec-policy configuration element.

   ORACLE# configure terminal
   ORACLE(configure)# media-manager
   ORACLE(media-manager)# codec-policy
   ORACLE(codec-policy)# select

2. Select the codec-policy object to edit.

   ORACLE(codec-policy)# select
   <name>:
   1:  name=cp1
   2:  name=cp2
   
   selection: 2
   ORACLE(codec-policy)#

3. Do the following:

   Attributes	Instructions
   dtmf-in-audio	Type enabled.
   secure-dtmf-cancellation	Type enabled.

4. Type done to save your configuration.