Actually there is no hot swap to IP Office 500 system but what I want to do is reduce downtime as short as possible. So I prepare one more IP500 unit with very basic module (one vcm 32 and one ATM/digital port module) as a backup. our VM Pro server installed on our main location with one of IP500 unit. My question is if this IP500 unit failed caused by hardware issue and I'm going to replace it with backup unit, how could I swap those licenses which already installed on failed Unit to the new unit? I heard this thing can be done by Avaya or their Partner only. Thanks in advance.