Two types of connector co-exist in the Headphone jack world: the TRRS and TRS. The TRS connector is only used for listening while the TRRS connector is used to listen and speak thanks to an additional ...

This connector can be also be used with certain other types of accessories ... and is now the more common size on phones. See: Headphone Jack (3.5mm) 2.5mm connectors are still common for TTY ...

Using a female 2.5 mm stereo inline jack [octanechicken] was able to get the Xbox One headset controller to work with older Xbox 360 chat headsets having a male 2.5 mm plug. The photos on the ...