Hello,
I have an E21V. This is configured so that it makes a SIP call to a terminal device. This works perfectly. However, the dial tone is so loud on the E21V speaker. This bothers me and the surrounding area massively.I have already reduced the settings in the firmware to the minimum. It's still too loud. I have the V1 version with firmware 21.31.5.11 installed. Can you change the firmware so that the dial tone from the E21V speaker can be switched off completely?