Hello, I am in search of a multicell DECT Headset Solution. I have to find this for a customer who is used to using a headset throughout the Office (Office is too big for one DECT Station and far too big for the Jabra Desk DECT headsets). So far I have only found the Jabra GN9125. Is this DECT Headset multicell compatible? Can I use it in combination with the 3CX Software in CTI mode to control it? Does Transfer work? Do assisted transfers work?