Yealink SIP-T4X, Administrator'S Manual

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Appendix
295
Parameter-
features.busy_tone_delay
Configuration File
<y0000000000xx>.cfg
Description
Configures a period of time (in seconds) for
which the busy tone is audible on the IP phone.
When one party releases the call, a busy tone
is audible to the other party, indicating that the
call connection breaks.
If it is set to 3, a busy tone is audible for 3
seconds on the IP phone.
Format Integer
Default Value 0
Range
Valid values are:
0-0s
3-3s
5-5s
Example features.busy_tone_delay = 0
Parameter-
features.normal_refuse_code
Configuration File
<y0000000000xx>.cfg
Description
Configures a return code and reason of SIP
response messages when rejecting an
incoming call. A specific reason is displayed
on the caller’s phone LCD screen.
If it is set to 486 (Busy here), the caller’s LCD
screen will display the message ―Busy here‖
when the callee rejects the incoming call.
Format Integer
Default Value 486
Range
Valid values are:
404-No Found
480-Temporarily not available
486-Busy here
Example features.normal_refuse_code = 486