If you imagine, any posture where your muscles are not in a resting position, if held long enough will give you problems.
business scenarios, you can be on the phone for an hour sometimes and
if you're using a PC at the same time, you inevitably wedge the phone
between ear and shoulder!
headset, you have none of those issues. Whether it is cordless or
corded / wireless or wired, any headset is better than none.
said that, a wireless headset means that you can get up and walk around
if you choose. This is perfect for avoiding RSI as you are more likely
to change your posture. I personally use a Plantronics Voyager 510
system as it gives high quality with noise cancellation and flexibility
of one Bluetooth Wireless Headset for both my Desk Phone and Mobile
Wireless Desk Phone adapters are
sadly expensive as there is a low perceived demand amongst
manufacturers. They either use Bluetooth or DECT and so are mostly
compatible with other wireless phone options using these communication