UCMA application unexpectedly answering user’s calls

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” »