How to do check my missed call log
A Panasonic TDx system has 2 types of call logs, one personal for the set, and one for the ICD group.
Pick a spare button, press PROG, the button, and dial 54 STORE.
If you had incoming: 00x on your display, that button will light and you can now press it to see who called. Your Navigator UP/DONW key will step you forward or backward through the log. The LEFT/RIGHT key will display the 4 lines of the display if you're not using a 7636 phone.
If you want to see incoming calls to a particular ICD group, pick another button, and dial 54 plus the ICD group number. For example, I used 100 as my ICD group (now 600 by default). I have 2 buttons, one logs my extension calls, one displays the system calls.