The option is only offered when the phone is actually engaged in a call. I first tried it out today as I joined one of Randulo’s New Wine Consumer calls on Talkshoe. When engaged a text message indicates the mute state very clearly on the LCD display. See photo to the right for an example. Click for larger image.
Since traffic to my earlier rant about SIP/DECT phones has been strong and consistent I think it’s important to point out that both manufacturers, snom and Gigaset, have listened and acted on some of my complaints. For this I am thankful. I have been recommending both of these devices not only on the merits of the device, but also the willingness of the maker to listen and act based on user feedback.