Yealink SIP-T48G Administrator's Manual page 142

Microsoft Lync Edition Administrator's Guide for SIP-T2_Series and T4_Series IP Phones
486 (Busy Here)

603 (Decline)

Procedure
Return code for refused call can be configured using the configuration files or locally.
Configuration File
Local
Details of the Configuration Parameter:
features.normal_refuse_code
Description:
Configures a return code and reason of SIP response messages when the IP phone
rejects an incoming call. A specific reason is displayed on the caller's phone LCD
screen.
404-Not Found
480-Temporarily Not Available
486-Busy Here
603-Decline
If it is set to 486 (Busy Here), the caller's phone LCD screen will display the message
"Busy Here" when the callee rejects the incoming call.
Web User Interface:
Features->General Information->Return Code When Refuse
Phone User Interface:
None
To specify the return code and the reason when refusing a call via web user interface:
1. Click on Features->General Information.
130
<y0000000000xx>.cfg
Web User Interface
Parameter
Specify the return code and the
reason of the SIP response
message when refusing a call.
Parameter:
features.normal_refuse_code
Specify the return code and the
reason of the SIP response
message when refusing a call.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
Permitted Values
404, 480, 486 or
603
Default
603