I have a telrad system with 3025 phones. The mute button was removed and something else programmed over it. I want to put the mute back on. In eManager, is there a program code where the mute button will light up and show the call is muted when on handset AND speaker? example, when programming is HM, the mute button works on speaker, however there is no notification showing it is muted. Any advice?

HM is Handset Mute, And SM is speaker Phone Mute. Depending on what version the system is SM could do both.

You're right tony, SM, does both. Thanks!