I would like to build a notification application on server which will contact (telephone call) persons via our existing Lync server. I already build proof-of-concept using Lync Model API, but since that approach requires running Lync client I don't believe this is practical in my case. Am I mistaken or I should try UCMA? As I can tell UCMA doesn't require Lync client installed/running?
Thank you!
You're correct, you will need to create an application (or service) with UCMA. This application can authenticate itself with the Lync server, create an endpoint, and then is able to create conversations/calls/messages (amongst other thing). This does not require a lync client install on the server.
Here is an MSDN video on creating a "Hello World" UCMA example application: UCMA Hello World - Send an Instant Message. I know this is about IM and not an Audio call, but once you get the IM bit, making it create an audio call instead is trivial.