I have a customer who wants me to host their Cisco Call Manager and Unity Connection in my datacenter, because they don't want it on site anymore. I have experience setting up on premise VOIP for customers, but not hosted. I do host a lot of other applications for them in the datacenter, but a hosted Cisco VOIP solution is one of them. If I entertain this idea, does Cisco offer a multi-tenent Call Manager and Cisco Unity Connection solution, where I could potentially host call manger and unity for multiple customers/businesses on the same server? Essentially like a new instance for each business? Let me know. thanks.