Sympathy! I spent most of a year in work-related telecons - and I really do mean most of my time in that year. I got brought in to rewrite the Evil Aerospace QA procedures, all of them, on the grounds that the actual QA managers didn't have the time to do it. So I got the job, but because I wasn't a QA specialist we set it up so I was practically permanently teleconned with a senior QA guy at one of the American sites and when we weren't talking to each other we were using the full AV suite for telecons with our bosses and their bosses.

And at the end of the year we still couldn't reliably initiate a telecon from either end, and regularly ended up listening to the other side going "well have you tried dialling again?"