Headsets compatible with 5220 sets

[ralph]

I have a customer that is using a Plantronics headset - without a base - connected to 5224 phones on the headset port. 
Works great.
However, the customer would like to use the same headset on a 5220 phone - doesn't work at all.
I've been hunting through Mitels site trying to find a doc that shows what headset should work with what phones.
Has anyone see that doc and can point me to the link?

Ralph

[bluewhite4]

I've never seen anything from Mitel, I've always used Plantronics site for that kinda thing.