DTMF
Press the number block keys on the telephone to generate what are known as dual tone multifrequencies (DTMFs). These are used to transmit specific information to the PBX, provider or destination.
Configuration
Web interface:
Identities > Options for experts
*Details about the settings are in Options for experts
Phone:
Settings > Identities > Options for experts > SIP
*Details about the settings are in SIP
Provisioning:
*Further help in the Auerswald DokuWiki