System Call Handler vs. User Mailbox

[murraymwps]

Can anyone tell me what the difference is between CUC system call handlers and user mailboxes from an AA standpoint? They seem almost identical in function and capabilities. Why would I use one vs. the other?

Thanks,

-mike

[lindborg · Accepted solution]

the primary difference is that user's with a mailbox require a license, call handlers do not - they are nearly identical and in fact the user is tied to a system call handler (called a "primary" call handler) in the database - as such the data model is about identical from a call flow perspective (transfer rules, greeting rules, menu entry etc...).  but you wouldn't want to have to use licensed users with mailboxes to construct large AA trees.