Joe Calev's WebLog

Posts and information about Microsoft Office Communications Server and sometimes off topic posts.

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  • Blog Post: UCMA 2.0 - Part 1.6 Introduction to SDP

    We are almost at the point where our Powershell commandlet will be useful, but first we need to learn about establishing the session protocol. You see, SIP stands for “Session Initiation Protocol”. The key here is the word “Initiation”. Yup, SIP just manages telling so and so that so and so wants to...
  • Blog Post: UCMA 2.0 - Part 1.5 Setting up a session

    In our next iteration, we will add to our commandlet to create a signaling session. In essence we will send an INVITE to the other party so that we can send a message later. There are a number of steps involved in setting up a session but for now we will just send the INVITE. When running this sample...
  • Blog Post: UCMA 2.0 - Part 1.4 Signing in and signing out

    It’s about time that we began writing some code and getting into the details of the API. To start out, I will cover the signaling part of UCMA. Those of you who read my previous blog series on UCMA will find the next several posts very familiar. For some of you, learning the signaling APIs in UCMA...
  • Blog Post: UCMA 2.0 - Part 1.3 Powershell and UCMA

    Today, we will get started with coding UCMA applications. First though, I would like to cover again the Signaling namespace exposed by UCMA. While much of this is not necessary when using the new Collaboration namespace, I feel that it is still important in terms of understanding how the API and SIP...
  • Blog Post: UCMA 2.0 - Part 1.2 - Asynchronous pattern and threading model

    Before you really start coding in UCMA 2.0, or even UCMA 1.0, it is extremely important that you understand the asynchronous pattern. UCMA is designed for server applications, meaning it supports many operations occurring at the same time. In order to best manage this, it uses an asynchronous model....
  • Blog Post: UCMA 2.0 - Part 1.1 - High level architecture and design of UCMA

    Let’s be honest, UCMA 1.0, while very useful, was a bit lame. The frustrating thing about it was it opened up many new possibilities, but didn’t give you the chance to take advantage of them. You could send messages to another party, but could not determine that user’s presence. You also were very limited...
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