[och]

I see that my 8310 has a 3.5mm jack, which is stereo + mic. Is there an adaptor that will allow me to use the old type of headsets that are 2.5mm mono + mic?

[Ricky-Ray]

You mean something like this? Amazon.com: Headset Adapter 3.5mm to 2.5mm Audio Adapter and Converter [Cingular RETAIL Package]: Cell Phones & Service

[och]

Yes, and I bought one of these, and it doesnt work

[Technocracy]

I read elsewhere that these adaptors only work for headphones, not microphones (output, not input).

I have been looking for a old-style headset w/a 3.5 mm connector. For my phone use a Bluetooth device is too much. Anyone?

[och]

I dont like bluetooth, because it needs to be charged, and it kills voice quailty.

[takeshi]

Originally Posted by och

Is there an adaptor that will allow me to use the old type of headsets that are 2.5mm mono + mic?

No need for an adapter. Search for part HDW-12420-003

Originally Posted by och

I dont like bluetooth, because it needs to be charged, and it kills voice quailty.

Voice quality has always been great on my Voyager 510.

[hellsop]

HDW-15306-002 is exactly what the original poster is looking for, I think.

[Technocracy]

Any of the 2 will fit my bill. Thank you!