AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 347)

5-70 41-001343-01 Rev 03, Release 3.2.2
Filter Out Incoming DTMF Events
In Release 3.2.2, an Administrator can now enter a parameter in the configuration files to
suppress incoming DTMF playback. This new parameter called “suppress incoming dtmf
playback ” will suppress the playback of both SIP INFO and RFC2833 incoming DTMF tones.
The locally generated DTMF tones will still be played.
Configuring Suppress Incoming DTMF Playback
Use the following procedures to
suppress incoming DTMF playback
on the IP phone.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the section, “Filter Out
Incoming DTMF Events” on page A-182.