I want to plug this headset to my wireless Swisscom DECT landline phone via the 2.5 mm jack. Does one know an audio cable adapter from this 3.5 mm to 2.5 mm audio + micro (so from TRRS (4-pole) to TRS (3-pole)) ?

Question

I want to plug this headset to my wireless Swisscom DECT landline phone via the 2.5 mm jack. Does one know an audio cable adapter from this 3.5 mm to 2.5 mm audio + micro (so from TRRS (4-pole) to TRS (3-pole)) ?

Answer

According to our supplier unfortunately they do not have the correct adapter.

In our range we have an adapter from 3.5 mm to 2.5 mm that should work, but we cannot guarantee it will work with that headset as we have not tested it. 

[InLine 2.5mm – 3.5mm (3m, Entry, 2.5mm)](https://www.digitec.ch/en/s1/product/inline-25mm-35mm-3m-entry-25mm-audio-cables-13265821)

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Question about Jabra Evolve 40 UC Stereo

I want to plug this headset to my wireless Swisscom DECT landline phone via the 2.5 mm jack. Does one know an audio cable adapter from this 3.5 mm to 2.5 mm audio + micro (so from TRRS (4-pole) to TRS (3-pole)) ?