Joe Calev's WebLog

I hope my recent blog series on the UCMA API was helpful for everyone. If you would like me to cover other details please let me know. In the near future I will continue to blog about applications for UCMA. However, I would like to point out the UCMA...

Let’s say you are not sure a particular endpoint exists at a certain time, so you would like to continually retry at specific intervals or you need to refresh a connection at a certain interval. To help with this situation, the UCMA API provides the TimerWheel...

Today we will finally revisit our client and add a little bit of code to it while discussing connection pools. For those of you familiar with concepts such as thread pools, connection pools are similar in a number of ways. Connection pools apply only...

Today we will cover a message type those of you more familiar with SIP may not know much about – the SERVICE request. Before writing this post, I attempted to research this message type on the Internet without success. Finally I just decided to look at...

Today will be a short post with no changes to our server or client projects. Currently we use the SipEndpoint class to register ourselves with the Microsoft Office Communications Server and create a dialog between our client and our server. Some of you...

I just found out today that I will be doing a demo of the UCMA API at TechEd in Florida! I am not sure of the session name but I believe it is on Tuesday and is on UCMA so there can't be that many for those of you who will also be at TechEd. I am very...

I must admit that while teaching the UCMA API, I have been learning about it myself. Today, my hope was to tell you how to create a client that sends a SUBSCRIBE message to the server and then receives NOTIFY messages from it. However, as I’ll explain...

We finally have all the pieces ready to get our client and server communicating. Yesterday we allowed our client and server to agree on communicating through the SIP MESSAGE message so the next step is to get our client to send a message and get our server...

OK, so now we have a client and a server that can both sign in, create a dialog, and recognize when the other has dropped the connection. I’m sure what you’d really like to do is get them to message each other! I’m sure some of you have gone ahead and...

Picture 091 Originally uploaded by kirispupis . OK, I admit I am a bit late with the picture for this week. I didn't have any great shots over the weekend so I thought I would blog about a much earlier shot. My wife is currently a real estate...

You have probably already noticed that UCMA is currently a low level API. The advantage, of course, is you have a great deal of flexibility in achieving your goals. The disadvantage is it takes a bit longer to get to where you are going. Rest assured...

Welcome to part eight of my UCMA introduction! This so far is my most ambitious blog endeavor to date and I hope what I have presented so far has been helpful. Please do send any feedback. I’d love to hear if this information has helped anyone or any...

Before we get to more details on sending messages, we need to talk a little more about signing out. Technically, when I had the application sign out using BeginTerminate, this wasn’t entirely correct. For those of you who have examined the SipEndpoint...

Yesterday as homework your job was to create a simple server that can sign in and sign out. In one view, we don’t really have a client/server in this case because both our ‘client’ and our ‘server’ are clients of the Microsoft Office Communications server...

So far we have a simple client that doesn’t do very much. In the next few days, we are going to add the capability for our client to send a message to Microsoft Office Communicator. We are going to do this by creating an INVITE to the Office Communicator...

Yesterday we finally got into some UCMA coding – allowing our client to sign in to the OCS server. Today we will provide the functionality to sign out of the server. In our current implementation, clicking the start button changes the button to ‘stop...

OK, so I admit that yesterday’s post was a bit lacking in excitement. Today we are going to take the first step in UCMA coding – getting our client to sign in. If you are just joining this series, attached to this post is a .zip file of the previous day...

Today we will start discussing coding details of the UCMA API. First I should explain what the purpose of this API is. As I mentioned yesterday, Speech Server is built on top of UCMA. In essence, UCMA enables you to create a SIP endpoint. If you do not...

IMG_6850 Originally uploaded by kirispupis . This week I did not take very many pictures because I only had about 20 minutes to photograph. I spent some time while my two little ones were sleeping to photograph some in the front yard. The session...

This is the first of a series of installments on creating applications in the latest Office Communications Server Beta. I’m sure for many of you who have glanced through the documentation, this is a tall order. OCS contains a number of API’s that each...