Tag Archives: Yealink

Yealink Handset Crackling or Buzzing from Handset and Speakerphone

You may occasionally notice that your Yealink phone starts crackling or buzzing.  This has most commonly been observed after the phone has been in operation for sometime without being rebooted or after a firmware update.

Below are some troubleshooting steps that you can try to resolve the buzzing and crackling

  • Try restarting the Yealink Phone (You can either remove the Power or Ethernet Cable if using PoE, alternatively just hold down the X key until you are prompted to restart the phone)
  • Try a Factory Reset on the Phone, ensure that you have all the required settings to reconfigure the device after the factory reset.
  • Update the phone firmware to the latest release and then perform a factory reset prior to configuring or provisioning the phone again.
  • Confirm if crackling or buzzing is just occurring from the handset or also from the speakerphone.  If just the handset exhibits the issue then the cable or handset may need to be replaced.
  • Ensure that the VoIP/SIP Phone System is up to date
  • Ensure that you are using the most appropriate voice Codecs for your phones and the SIP Trunk. (A-law is commonly used in Europe and u-law is generally used in the United States)

Troubleshooting Yealink WF50 Wi-Fi USB Dongle

The Yealink WF50 is only compatible with the following phones

  • Yealink SIP-T27G
  • Yealink SIP-T41S
  • Yealink SIP-T42S
  • Yealink SIP-T46S
  • Yealink SIP-T48S
  • Yealink SIP-T42U
  • Yealink SIP-T43U
  • Yealink SIP-T46U
  • Yealink SIP-T48U
  • Yealink SIP-T52S
  • Yealink SIP-T54S
  • Yealink SIP-T53

The Yealink phone must also be running version 84 firmware otherwise the WF50 USB Dongle will not be detected by the phone.

At time of writing the following firmware should be running on the phone

  • Yealink SIP-T27G requires firmware (Version 84 or later) latest Yealink Firmware is 69.86.0.15 and latest 3CX Firmware is 69.86.0.5
  • Yealink SIP-T41S requires firmware (Version 84 or later) latest Yealink Firmware is 66.86.0.15 and latest 3CX Firmware is 66.86.0.5
  • Yealink SIP-T42S requires firmware (Version 84 or later) latest Yealink Firmware is 66.86.0.15 and latest 3CX Firmware is 66.86.0.5
  • Yealink SIP-T46S requires firmware (Version 84 or later) latest Yealink Firmware is 66.86.0.15 and latest 3CX Firmware is 66.86.0.5
  • Yealink SIP-T48S requires firmware (Version 84 or later) latest Yealink Firmware is 66.86.0.15 and latest 3CX Firmware is 66.86.0.5
  • Yealink SIP-T42U requires firmware (Version 84 or later) latest Yealink Firmware is 108.86.0.70 and latest 3CX Firmware is 108.86.0.72
  • Yealink SIP-T43U requires firmware (Version 84 or later) latest Yealink Firmware is 108.86.0.70 and latest 3CX Firmware is 108.86.0.72
  • Yealink SIP-T46U requires firmware (Version 84 or later) latest Yealink Firmware is 108.86.0.70 and latest 3CX Firmware is 108.86.0.72
  • Yealink SIP-T48U requires firmware (Version 84 or later) latest Yealink Firmware is 108.86.0.70 and latest 3CX Firmware is 108.86.0.72
  • Yealink SIP-T52S requires firmware (Version 84 or later) latest Yealink Firmware is 70.84.0.70 and latest 3CX Firmware is 70.84.0.80
  • Yealink SIP-T53 requires firmware (Version 84 or later) latest Yealink Firmware is 96.86.0.70 and latest 3CX Firmware is 96.86.0.74
  • Yealink SIP-T54S requires firmware (Version 84 or later) latest Yealink Firmware is 70.84.0.70 and latest 3CX Firmware is 108.84.0.80

Firmware can be downloaded directly from Yealink here:

Yealink Support

If you are running 3CX then you can download the latest supported firmware from here:

https://www.3cx.com/support/phone-firmwares/

Change of behaviour with TRAN (Transfer) key after upgrading Yealink T3X and Yealink T2X Firmware to V70

I have noticed a change of behaviour with TRAN (Transfer) key after upgrading Yealink T3X and Yealink T2X to the new V70 firmware along with upgrading 3CX Version 11 to Service Pack 3.

It appears that the default DSS Key Transfer Mode is changed from Attended Transfer to Blind Transfer.  An Attended Transfer was always performed when you used the BLF/DSS Keys to perform the Transfer in previous Yealink firmware versions.  For example A calls B wanting to speak with C, B presses TRAN button and then presses the BLF/DSS Key for C.  In this instance B should be able to speak with C (Attended Transfer) to see if they want to take the call rather than A just being passed straight to C (Blind Transfer).

yealink blind transfer

 

You need to login to the Yealink HTTP Interface and then navigate to Phone->Features->Transfer Settings and Change “Transfer Mode via DSSKey” to “Attended Transfer” by using the drop down menu.

yealink attended transfer

So by changing this simple setting you can restore the Attended Transfer function whilst still taking advantage of the V70 Firmware for your Yealink Phone.

Dial code to set 3CX MyPhone extension status

You can use the following dial codes to change your 3CX MyPhone extension status

The dial codes are as follows:

*30 = Available

*31 = Away

*32 = OutOfOffice

*33 = Custom1

*34 = Custom2 *3

You can just dial *31 to change your status to Away in 3CX MyPhone