Polycom SoundStructure C16 Design Manual page 563

Command
set phone_dial_tone_gain
"Phone In"-6
phone_dial_tone_gain
Argument
Channel Type
Value Type
Read/Write Mode
Phys Chans
Virt Chans
System Limits
Default
User Limits
Supported
Event Source
Description
This parameter controls the gain that is applied to the incoming phone signal
when dial tone is present.
Examples
Response
val phone_dial_tone_gain
"Phone In" -6
phone_dtmf_gain
Argument
Channel Type
Value Type
Read/Write Mode
Phys Chans
Virt Chans
System Limits
Argument value
Virtual Channel
Floating-Point
Read/Write
Analog Telephony Input
Mono
Minimum: -100.0, Maximum: 20.0, Resolution: 0.1
0.0
No
No
Description
Sets the gain of the dial tone heard in the room for the
phone associated with the virtual channel "Phone In" to
-6dB when the phone is taken offhook. Note that the
phone in virtual channel name must be used, not the
phone output virtual channel name.
Argument value
Virtual Channel
Floating-Point
Read/Write
Analog Telephony Input
Mono, Stereo
Minimum: -20.0, Maximum: 20.0, Resolution: 0.1
Command Protocol Reference Guide
Dial Tone Gain
Telephony Input DTMF Gain
A - 47