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Yealink T40G Administrator's Guide

Yealink T40G
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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones
320
Permitted
Values
String within 511 characters
Default
Blank
Web UI
Features->Forward&DND->DND->DND Authorized Numbers
Parameter
features.dnd_refuse_code
<y0000000000xx>.cfg
Description
It configures a return code and reason of SIP response messages when rejecting an
incoming call by DND. A specific reason is displayed on the caller’s phone LCD screen.
Note: For Yealink IP phones, it works only if “features.dnd.allow” is set to 1 (Enabled).
Permitted
Values
404-Not Found
480-Temporarily Unavailable
486-Busy Here, the caller’s phone LCD screen will display the reason “Busy Here” when
the callee enables DND feature.
603-Decline
Default
480
Web UI
Features->General Information->Return Code When DND
Parameter
features.dnd.large_icon.enable
<y0000000000xx>.cfg
Description
It enables or disables the IP phone to display a large DND icon on the idle screen.
Note: It works only if “features.dnd.allow” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
0
DND Feature Configuration
After you choose a DND mode, you can configure DND feature for all lines or specific lines. It depends on
the DND mode (except T19(P) E2):
Phone (default): DND feature is effective for all lines.
Custom: DND feature can be configured for a specific line or multiple lines.
Note
DND mode is set by the parameter
features.dnd_mode
.
Yealink IP phones also support DND on code and off code to activate and deactivate server-side DND
feature. They may vary on different servers.
Topics
DND in Phone Mode Configuration

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Yealink T40G Specifications

General IconGeneral
SIP Accounts3
Wall MountableYes
Opus CodecNo
Display2.3 inch 132x64-pixel graphical LCD
NetworkDual-port Gigabit Ethernet
PoEYes
Headset SupportYes, RJ9 port
Power AdapterOptional
Voice CodecsG.722, G.711(A/μ), G.729AB, G.726
Local Phonebook1000 entries

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