So, I read this thread and I see the same thing Rob does...if you don't mind, let me see if I can point out where our hang up is:
I am creating an auto attendant for a dept with 60 employees. The auto attendant will send callers to an extension that is the employees alternate Unity voicemail extension. ---> This implies that callers are already being routed to Unity via a Call Handler or directly to a Directory Handler. Callers will then be allowed to transfer to an extension from within Unity.
The company does not want the employees phones ringing which is why I am sending to an alternate extention. --> If you aren't going to ring an extension, then you should just go with Rob's suggestion which is to route directly to the user's greeting. Even if you use an "Alternate Extension" configuration in Unity, the same transfer rules will apply. The Alt Extension is treated the same as the primary extension. However, you may just mean that the number is not the Employee's real extension and not referring to an "Alternate Extension" in Unity. This is probably because you don't want callers to hear the extension announced with the transfer option. You can actually turn off the announcement of extensions so you could have callers transfer to any user but not hear an extension and you don't need any "alternate" extension.
Employees real extension is something like 3175551212
Employees alternate extension is something like 70301
In Unified Communications manager I was going to create a single CTI route point with all 60 of these alternate extensions.
I also thought about createding 60 individual CTI route points. --> Again, if you just want to transfer to users without using their real extension then you don't need any CTI route points. However, you can create one CTI route point and have multiple extensions configured within the one route point. If you do this, you are going to need the following (if you don't want phones to ring): 1) Set this extension as the user's "Alternate Extension" in Unity (unless you're going to have 2 mailboxes for everyone...not a good use of licensing). If you don't use either the Alt Extension or a separate mailbox and the CTI route point points to Unity then Unity will not recognize the extension and callers will get the "Open Tree" or generic greeting and prompted to login. 2) Set the transfer option to go directly to voicemail for each user (again, the Alternate Extension is treated as if it were the primary extension from a call handling perspective).
Does anyone know of or can think of any issues I may run across or even a more slimline way of doing this? --> Unless we are both severely misunderstanding what you're trying to accomplish then we've outlined a more slimline way (and one that doesn't cause much headache for you and is also manageable for the customer). However, if we are misunderstanding...please clarify and I'm sure we'll be able to help you.
Hailey
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Transfer Rules 
