Hello, while trying to attend at a customer request I found out a (possibly undocumented) conference feature 700**my-ext-number this put myself in conference alone on line 1. If I blind trasfer a call to 700**my-ext-number, I put myself in conference with the call. This seems to work adding several calls too. Programming a Yealink BLF with a speed dial to 700**my-ext-number on line 2 would eventually create a on-demand conference room ready to use. Anyone has experience with this? It seems to work, but have some issue For example, what ID has these conference rooms? Can another ext direct transfer calls to it? How?