Yealink Overrides

Updated at July 15th, 2025

Prerequites

Access to the Manager Portal with Office Manager or greater scope. 

 

Yealink Administrator Guide

Administrator Guide Link

Null Values

You can override any provisioned value by entering %NULL%

I.e. firmware.url.server_type="%NULL%"

Directed Call Pickup

features.pickup.direct_pickup_enable="1"

features.pickup.direct_pickup_code="*35"

Distinctive Ring

The Distinctive Ring feature works by adding a department name to the extension.

account.1.alert_info_url_enable="1"

distinctive_ring_tones.alert_info.1.text "Sales"

distinctive_ring_tones.alert_info.1.ringer="2"

The example above will cause any Yealink phone to use Ringer 2 whenever a call is received from a member of the Sales department.

NOTE: If your department has space(s) in it, do not include the space(s) when adding it to the override. 

Ringer Volume

It is sometimes necessary to lock the ringer volume at the administrative level. To do this, set the value below to 0 through 15, with 15 being the loudest. If any value is set, the rocker switch will not work. You can set this value to %NULL% to restore volume rocker functionality.

force.voice.ring_vol="10"

Wallpaper Sizes

Phone Model Image Format Resolution Single File Size Total File Size
VP530 .jpg, .png, .bmp     1920*1200        
SIP-T29G    .jpg, .jpeg, .png, .bmp     480*272, 1.8MP     <= 5MB      
SIP-T32G     .jpg, .png, .bmp     480*272        
SIP-T38G     .jpg, .png, .bmp     480*272        
SIP-T46G     .jpg, .jpeg, .png, .bmp     480*272, 1.8MP     <= 5MB      
SIP-T46S     .jpg, .jpeg, .png, .bmp     480*272, 1.8MP        
SIP-T48G     .jpg, .jpeg, .png, .bmp     800*480, 2MP     <= 5MB    

 
 
SIP-T48S     .jpg, .jpeg, .png, .bmp     800*480, 2MP     <= 5MB    
<= 20MB
SIP-T52S     .jpg, .jpeg, .png, .bmp     320*240, 4.2MP     <= 5MB      
SIP-T54S     .jpg, .jpeg, .png, .bmp     480*272, 4.2MP     <= 5MB      
SIP-T54W     .jpg, .jpeg, .png, .bmp     480*272, 2MP     <= 5MB      
EXP50 .jpg, .jpeg, .png, .bmp     272*480, 4.2MP     <= 5MB      

Yealink FAQ

Default Wallpaper

phone_setting.backgrounds="Config:Default.jpg"

Wallpaper T46G

phone_setting.backgrounds="Config:t46g.jpg"

wallpaper_upload.url="http://yourdomain.com/images/t46g.jpg"

Wallpaper T48G

phone_setting.backgrounds="Config:t48g.png"

wallpaper_upload.url="http://yourdomain.com/images/t48g.jpg"

Allow Remote Control From IPs

features.action_uri_limit_ip="any"

or

features.action_uri_limit_ip="192.168.0.1"

Programmable Key

(Replace 'X' with the number of the key you are setting)

programablekey.X.type=

programablekey.X.line=

programablekey.X.value=

programablekey.X.xml_phonebook=

programablekey.X.history_type=

programablekey.X.label=

Line Key Types

Line Key Configuration:
(Replace 'X' with the number of the BLF key you are setting & replace 'Y' with the Line Key Type #.)

linekey.X.type = "Y"
linekey.X.value = “(this may vary, depending on the line key type, but usually is an Extension)”
linekey.X.label = "Label"

  • 0-NA 
  • 1-Conference 
  • 2-Forward 
  • 3-Transfer 
  • 4-Hold 
  • 5-DND 
  • 7-Call Return 
  • 8-SMS 
  • 9-Directed Pickup 
  • 10-Call Park 
  • 11-DTMF 
  • 12-Voice Mail 
  • 13-Speed Dial
  • 14-Intercom 
  • 15-Line 
  • 16-BLF 
  • 17-URL 
  • 18-Group Listening 
  • 20-Private Hold 
  • 22-XML Group 
  • 23-Group Pickup 
  • 24-Multicast Paging 
  • 25-Record 
  • 27-XML Browser
  • 34-Hot Desking 
  • 35-URL Record 
  • 38-LDAP 
  • 39-BLF List 
  • 40-Prefix 
  • 41-Zero Touch 
  • 42-ACD 
  • 45-Local Group 
  • 46-Network Group 
  • 49-Custom Button 
  • 50-Keypad Lock
  • 55-Meet-Me Conference 
  • 56-Retrieve Park 
  • 57-Hoteling 
  • 58-ACD Grace 
  • 59-Sisp Code 
  • 60-Emergency 
  • 61-Directory

DND Sync

bw.feature_key_sync="0"

features.dnd.allow = 0

After auto-provision, and it takes effect, the DND feature can't be used even though the user presses the DND softkey on the keypad.
 

Daylight Saving Time

0 = Disabled 1 = Enabled 2= Automatic

local_time.summer_time="0"

Time Format

0 = 12- Hour Format     1 = 24- Hour Format

local_time.time_format ="0"

Allow Screen Capture via YMCS without Authorization

static.remote_control.1.allow="1"

Jitter Buffer to Fixed

voice.jib.adaptive="1"

voice.jib.min="120"

voice.jib.max="120"

voice.jib.normal="120"

SIP Scanner Protection

features.direct_ip_call_enable="0"

sip.trust_ctrl="1"

sip_trust_ctrl="1" (only for Firmware under v80)

Update Auto Answer Tone

Please see the following guide for the different tones you can set.

voice.tone.autoanswer="1400/500,0/15000"

Increase Time Out for Dial Now Rule

phone_setting.dialnow_delay="x"

  • Acceptable values: 1-14 (seconds)

Increase HTTP/HTTPS File Transfer Timeout

network.attempt_expired_time="<seconds>"

Enable Missed Call Logs

account.1.missed_calllog="1"

Disable Missed Call Notification

phone_setting.missed_call_power_led_flash.enable="0"

Provisioning Guide

Provisioning guide link.

Speed Dial to Voicemail Without Entering PIN

features.enhanced_dss_keys.enable="1"

linekey.X.type="73"

inekey.X.line="1"

linekey.X.label="Speeddial VM"  

linekey.X.value=”5001,Extension,,,PIN#” 

(Replace 'X' with the number of the BLF key you are setting.) The overrides above will let you have a BLF key as a Speed dial to dial into a voicemail box without entering a PIN 

Example: Extension 101 has 1234 PIN, the override will look like this: linekey.10.value=”5001,101,,,1234#

Please note, that some Yealink firmware versions have stopped allowing commas as spacers.
Please refer to the override below:

features.enhanced_dss_keys.enable="1"
linekey.3.type="73"
linekey.3.line="1"
linekey.3.label="Speeddial VM"
linekey.3.value="5001$Cwc$$Cp5$1019$Tdtmf$$Cp5$7538$Tdtmf$"


In this example, the key will be placed on Line 3, 5001, which is used to dial Voicemail with a prompt for extension and voicemail pin. 1025 is the extension we are trying to reach, and 7539 is the voicemail pin.

Substitute the Extension and Voicemail PIN, then save and resync.

Set up Wi-Fi via Override

Via override, you can "pre-install" Wi-Fi SSIDs on Yealink phones once they are provided. Please replace the X with a number; starting at 1, you can set up to 99 SSIDs.

static.wifi.function.enable="1"

Enables the Wi-Fi feature.
static.wifi.enable="1"

This enables Wi-Fi mode.
static.wifi.X.ssid="Wi-Fi SSID"
static.wifi.X.security_mode="WPA/WPA2 PSK"

Permitted values: NONE, WEP, WPA/WPA2 PSK, WPA3-Personal, 802.1x EAP
static.wifi.X.password="Wi-Fi Password"

Change Transfer Mode

By default, the Transfer mode is Attended Transfer. You can change this mode on devices via this override:

transfer.dsskey_deal_type="X"

Replace X with one of the following:

  • 0 - New Call
  • 1 - Attended Transfer (this is the default)
  • 2 - Blind Transfer
  • 4 - Optional Selection

Transfer Call History

Enables or disables the phone from logging the transfer party's phone number in the call history list. :

0-Disabled, the phone will log the transfer-to party's phone number in the call history list.

1-Enabled

features.save_init_num_to_history.enable = 0

Enabling Auto Answer via Override

Please use the following override via the Inventory> Phone Hardware page. You will need to adjust X accordingly to the account this will affect.

account.x.auto_answer="1"
0 = Disabled
1 = Enabled, the phone can automatically answer an incoming call.

NOTE: The phone cannot automatically answer the incoming call during a call or while dialling, even if auto answer is enabled.

Default Directory Key to Remote Phonebook

Issue: Yealink Phones – Directory Key Defaults to Local Directory Only

By default, Yealink phones have the "Directory" programmable key set to open the Local Directory, which is often blank. This behaviour prevents users from easily accessing the Remote Phonebook, even though it's uploaded and available.

Solution: Override Directory Key to Open Remote Phonebook

To make the Directory button open the Remote Phonebook (e.g., "Company Directory") automatically, apply the following configuration overrides:

programablekey.2.type="22"
programablekey.2.line="Company Directory"
programablekey.2.label="Directory"

These overrides can be pushed via the ButtonBuilder.

 


 

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