It can be done though a fw update using SIP.
Relevant Skills and Experience
I have more that ten years of experienced maintening and installing AVAYA Communication Manager.
Proposed Milestones
$70 USD - Upgrade FW.
$152 USD - Integrate the phone to Elastik and perform test calls. Job completed.
Additional Services Offered
$3000 USD - i can Install/Adminiter/Maintain/Upgrade any AVAYA PBX