I just added an EXP100 to a S500. Firmware versions are 22.214.171.124 and 126.96.36.199. To my knowledge, those are the most recent firmwares respectively. I added BLF buttons for extensions to the EXP100. In EPM I have set BLF Short Press Idle State to *80. However, I can only get the BLF buttons to monitor the extensions state and to call the extension. A short press does not intercom. If I press *80 and then the BLF key, the intercom works.
Another weird quirk is “BLF Long Press Idle State Open Edit Button Screen”. That setting is disabled, but it stills opens the edit menu when I do a long press of the BLF button when idle.
I logged into the S500 web gui management directly. BLF short and long key press is properly configured.
I am stumped. Anyone have any ideas?