Make W710 Compatible with Avaya one-X(r) Attendant 4.0 Service Pack 13

Hello, I was referred to this forum by one of your technical support reps, Irina MONARREZ. I have just purchased the Savi W710 to be used with our current Avaya one-X(r) Attendant 4.0 Service Pack 13 for Avaya Aura(r) Communication Manager. However, the headphones do not have the capability to pick-up calls while roaming with the headphones on. Plantronics says I must roll back to SP6 to make the Savi 710 100% functional, but we are unwilling to do that. My question is, can you revise your software so that my newly purchased W710's will work with Avaya one-X(r) Attendant 4.0 Service Pack 13? Thank You, any help here would be much appreciated. These headphones are obviously very expensive and I would like to see them work as they should. They are for our receptionist who loves this model! Todd McDowell Town of Vail tmcdowell@vailgov.com