Microsoft Lync and Skype for Business have a rich set of .NET APIs which make it easy to extend the platform and integrate it with other applications. This blog helps explain how to use those APIs.

UCMA application unexpectedly answering user’s calls

Posted: March 14th, 2013 | Author: | Filed under: UCMA 3.0, UCMA 4.0 | Tags: , , , , , | 3 Comments »

This was an interesting scenario that had me completely confused at first. Audio calls and instant messages to real Lync users were mysteriously being answered by a totally unrelated UCMA application, without ever appearing in the users’ Lync clients, so you would try to call or IM someone and unexpectedly get a generic IVR menu.

After puzzling over this weird behavior for a while, I figured out that there are some interesting side effects you can run into if you use UserEndpoints and a default routing endpoint in the same UCMA application – specifically, within the same collaboration platform. Continue reading “UCMA application unexpectedly answering user’s calls” »

Filtering instant messages with the Lync Server SDK

Posted: November 10th, 2012 | Author: | Filed under: Lync Development | Tags: , , , , , , | 3 Comments »

Recently I was answering a question about filtering instant messages between Lync users, and I decided that this would make a good topic for a post. It’s a fairly common use case, and one that is not too easy to implement because it requires the arcane and mysterious Lync Server SDK, which is written in hieroglyphics and can only be used by the light of a full moon.

Okay, that last part isn’t true, but it is true that the Lync Server SDK is one of the least well-known and most challenging APIs in the Lync development platform. It consists of two components, the Microsoft SIP Processing Language, a.k.a. MSPL, and the Managed SIP Application API. The latter of these is the one we’ll need to use to filter instant messages. Continue reading “Filtering instant messages with the Lync Server SDK” »

Sending formatted IMs from a UCMA application

Posted: January 29th, 2012 | Author: | Filed under: UCMA 3.0 | Tags: , , , | 2 Comments »

I can’t honestly say that I’ve run into a lot of situations where I’ve said to myself, “If only I could send an HTML formatted instant message right now, my problems would go away.” But adding formatting to IMs can definitely help with some specialized communication applications such as bots where you want to distinguish different types of messages, or emphasize certain parts of a conversation. So, to make those nice visual touches easier, and for anyone out there who is in a tight spot by virtue of not knowing how to send an IM with special formatting, I thought I’d write up a quick post on it. Continue reading “Sending formatted IMs from a UCMA application” »

How to get the “is typing…” messages through UCMA

Posted: January 9th, 2012 | Author: | Filed under: UCMA 3.0 | Tags: , , , | 2 Comments »

If you’re writing a UCMA application that handles instant messaging, you may at some point want to replicate the effect that users of the Lync client get where a message shows up notifying you when the other person is typing. This makes it a bit easier for people to carry on a conversation over instant messaging without constantly interrupting one another. Triggering and receiving this notification is actually quite easy in UCMA, but the way to do it is not immediately obvious. Continue reading “How to get the “is typing…” messages through UCMA” »