I have a unity server 5.0, the license for the users are 100 users only who can have a voice mail box, but the employees in the company more than 100 users.
the question is:
Can I configure an auto attendant on the unity and more than 100 users can recieve tha call throug the greeting message or only the 100 users can recieve the message?
if yes can i add more than 100 users to the unity without voice mail box but only to recieve the call through the auto attendant on the unity
That is possible. This gets into version dependancies some, so I will speak to Unity since that is the term we have used throughout this thread. You can create what is called an "Internet Subscriber" on the Unity System. You can assign an extension, name, etc. It does not eat up a license and can be used in the Call Handler extension dialing and also in Directory Handler name lookups. It is basically a user without a mailbox or, more accurately, a contact.
Another option is available in unity 4.0(4) and later. You can use the "System Transfer" conversation, which will allow a caller to just enter digits. After a timeout period (seconds) the Unity system will assume the caller is done entering digits and transfer the caller. This could be somewhat unpredictable since the user can enter any digits they choose. You will want to make sure that the Restriction tables on your Unity system and the call restrictions applied in your CUCM system (via partitions and CSS config) ensure that someone can't use your Unity system as a toll-fraud haven.
Here is more information on the System Transfer:
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