Polycom SoundStructure C16 Design Manual page 576

Dial Tone Gain—phone_dial_tone_gain
Argument Argument value
Channel Type Virtual Channel
Value Type Floating-Point
Read/Write Mode Read/Write
Phys Chans Analog Telephony Input
Virt Chans Mono
System Limits Minimum: -100.0, Maximum: 20.0, Resolution: 0.1
Default 0.0
User Limits No
Supported
Event Source No
Description
This parameter controls the gain that is applied to the incoming phone signal when dial tone is present.
Examples
Command
set phone_dial_tone_gain
"Phone In"-6
Polycom, Inc.
Response
val phone_dial_tone_gain
"Phone In" -6
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.
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