Polycom SoundStructure C16 Design Manual page 577

Telephony Input DTMF
Argument Argument value
Channel Type Virtual Channel
Value Type Floating-Point
Read/Write Mode Read/Write
Phys Chans Analog Telephony Input
Virt Chans Mono, Stereo
System Limits Minimum: -20.0, Maximum: 20.0, Resolution: 0.1
Default 0.0
User Limits No
Supported
Event Source No
Description
This parameter sets the gain (in dB) applied to DTMF tones generated to the local room. To adjust the level
of ring tones, entry tones, and exit tones played back into the local room, use the phone_tone_gain
parameter.
Polycom, Inc.
Gain—phone_dtmf_gain
577