Exchange Server's UsrCAL

Sounds right.  CALs are assigned to Human Beings, not user accounts, so if 170 people will use Exchange, you need 170 CALs.

Yes, Outlook 2013 is compatible with Exchange 2016.

-->and Outlook 2013 is it compatible with exchange server 2016 ?
Yes. It is compatible.

FYI CALs are only in legal document to make sure you are entitled to access the server.

So what will happend if i used only 20 Exchange UsrCALs

So what will happend if i used only 20 Exchange UsrCALs

Then you have 150 UNUSED.

Or do you mean something else?

Outlook on client pcs will not connect and deliver/recive emails  ?

Why not?

I'm guessing there's a translation issue here, but I'm not sure what you're talking about.  You have 170 users.  You have 170 CALs.  You only use 20 CALs.  Which means 150 people are not using exchange...

I Liked this Comment :

There is a bit of necessary information missing here, such as what licenses you already own and of what type.  I'll make some huge assumptions and give you a scenario:

Assuming that you are using user CALs (the most common type) then you need 50 Windows Server CALs total which you should already own since you need them for your existing setup sans Exchange.  No new Windows Server CALs are needed for adding another server if they are user or device CALs.
Assuming that all 50 users will get Exchange mailboxes, you need 50 Exchange CALs.  Everyone using Exchange needs both a Windows Server CAL (which you already should own) plus an Exchange CAL.

Ok.... but you're not being clear about what you're asking... Can you clarify so we can help you?

What if I have windows server 2008 UsrCALs 170
And i have member server 2008 + exchange server 2007 with CALs .

 I changed exchange server to (windows server 2016 + exchange server 2016 )
do I need new Windows server UsrCALs + Exchange Server 2016 UsrCALs  ??

Ok.... but you're not being clear about what you're asking... Can you clarify so we can help you?

I have no idea about UsrCALs ..(server +exchange )

I have windows server 2008 r2 license  and usrCALs for 170 (Domain server)

i would upgrade Exchange server from 2007 to 2016 . (windows server + exchange )


shall i keep Domain server in 2008 r2 and upgrade  exchange server only ?
every windows server in my domain network need UsrCALs Licenses ?

I got the idea , thanks

also i found this link http://slideplayer.com/slide/5843467/

One More Question Lee W

How adding User's CALs ?  for  ( window server + Exchange )

CALs are a documentation process for Exchange and Windows.  You don't "install" them.

CALs are a documentation process

so I buy the UsrCALs and Not  transfer them to the user's ?

just I keep the client's number not more than 170 ?

What I recommend is that you keep a list of users.  That list should never have more than the number of CALs you purchased.  If it looks like you might, you buy more CALs.  If a user permanently leaves the organization, you can transfer the CAL to the new user.  If a user leaves for holiday (vacation) you CANNOT transfer (CANNOT remove the user from the list and replace with a different user) the CAL.

Ok , NOT same activation  for Adding RDS CALs for Remote Desktop Services access

In YEMEN Country why I should buy UsrCALs for Windows Server & Exchange Server?
Since Microsoft rules are not working In YEMEN..

is there rules agreement  depend on the countries ?