Wantek Wired Telephone RJ Headset with Noise Canceling Mic + Quick Disconnect + Volume Mute Control for Aastra 6751i Shoretel 485 Polycom VVX300 Digium D50 Altigen 510 Comdial 8412 IP Phones(600QS3)

Yes, this is compatible with 'regular' old landline phones. In my case, that's a Panasonic KX-TG4771 corded desktop phone. The phone came with a cordless phone bundled, and I had the same brand of headset for the cordless unit. Unfortunately, the 2.5mm jack stopped working. (And, side note, I got pretty tired of replacing the cordless batteries.) Rather than buying a whole new phone system, I tried this. Glad I did!Pros:Sound quality, incoming at least, is plenty loud and steady—no crackling or hissing noises. It seems likely this is a much more robust way to attach a headset vs. the 2.5mm jacks; time will tell. It's comfortable and very light; can wear it for long times with no discomfort. The quick disconnect is very handy as you can easily decouple and go for a beverage refill. Both the mute and volume controls work perfectly. The build quality is quite decent.Cons:Well, compared to having the old headset attached to a cordless (i.e., walkabout) phone, this one of course leaves you tethered to your desk. Of course, that's not a con of the headset; more of my mindset! The microphone (outgoing) volume *might be* a little low, had one person complain early on. Since then, I make sure the mic is close and that seems to do the trick. The volume switch could use better visual indication of which way is up and down. There are *tiny* tick marks on the side, but you better have good eyes and good light if you want to see those.Overall:For the price, this is a great headset for those few of us who actually still engage in the ancient art of talking to people!

SET UP: Setting the headset up was easy (just plug and play with my Polycom VVX 411 desk phone). I liked the adjustable headband and mic arm - not just up and down but side to side.SOUND: At first I found the microphone picking up on my breath - sounded like wind or forceful breath when I talked - but moving the mic arm up above my lips and out to the side a little helped. I asked several clients if I sounded ok and they said they could hear me. I could hear them just fine as well. I wouldn't say the sound quality was great, but good enough for a $30 headset.COMFORT: After about 15-20 minutes of wear, the plastic cushion on the reverse side of the ear cushion started hurting. Perhaps I have a sensitive head/scalp, but I'm a woman with curly hair so I already had some amount of built-in cushion between my head and the plastic piece. The material is somewhat flexible and definitely stays put, but I found it hard and uncomfortable, so I am returning it. Might try their model with two headphones if I don't find a comparably-priced headset with better reviews.

Background noise on both ends when mic on.Comfortable ear pad.

The first headset that I purchased did not work at all. However, the company reached out to me and sent me a replacement headset free of charge. This headset works much better. I do have a few complaints.. it’s very tight on my head and doesn’t seem to be adjustable in width (from ear to ear). The plastic piece on the side opposite of the ear piece digs into my head and is really uncomfortable after wearing for hours. Also the connection where the two wires come together is t entirely secure, I’ve accidentally knocked it loose a few times.The product alone would receive a 3-star rating from me but I added an extra rating for the great customer service.

they work as expected... the only con is that the wire is a little to long and it gets tangled. besides that works great