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Looking to use a WH62/WH63 series DECT wireless headset work with Yealink EHS35 adapter with T3 series phone?
I bought $800 worth of headsets and adapters since everything on Yealink's site indicated fully supported.
As of 3CX V18 update 6:
Knowledge article on Yealink site
Hopefully 3CX will add this parameter to the template and push quickly to the world.
I used 3CX template syntax so the parameter is only added for the supported T3 series phones.
The EHS35 deficiency with 3CX has been a reported defect in the forums since Nov 2021.
I avoid running unsupported templates. I hate disappointing customers even more.
Here is the bottom of my modified yealinkT4x.ph.xml.
I bought $800 worth of headsets and adapters since everything on Yealink's site indicated fully supported.
As of 3CX V18 update 6:
- 3CX does not support the EHS35 adapter to integrate the Yealink WH62/63 headset family.
- The Yealink phone firmware "supported" by 3CX does support the EHS35 adapter.
- T3 series phone firmware needs to be 124.85.0.0 or newer
Knowledge article on Yealink site
voice.ultrasonic.enable = 1- The T3x series templates are embedded in the yealinkT4x.ph.xml file
- 3CX requires Pro or Enterprise editions to use custom templates
- 3CX support will require you to reconfigure the phone back to a "non-custom" template before they support you
- T3 series phones without an EHS35 adapter plugged in work normally with the voice.ultrasonic.enable set to 1
- The adapter is "1. Common" in the "Analog Headset Adapter" basic settings on the phone.
I used 3CX template syntax so the parameter is only added for the supported T3 series phones.
The EHS35 deficiency with 3CX has been a reported defect in the forums since Nov 2021.
I avoid running unsupported templates. I hate disappointing customers even more.
Here is the bottom of my modified yealinkT4x.ph.xml.
Code:
phone_setting.idle_dsskey_and_title.transparency=
#Custom Code Block
#Add EHS35 headset adapter support to T3x series
{IF ua=SIP-T30P,SIP-T31P,SIP-T31G,SIP-T33P,SIP-T33G}
voice.ultrasonic.enable = 1
{ENDIF}
#End Custom Code Block
]]></deviceconfig>
</device>

