hahaha!
Only thing I can think of is the telephone cable you are using to connect the DC8 to the Apex Base Unit. Make sure it's the RJ-11 phone cable with 4 connectors. Any others will not work. Once you are connected with the right cable, then you should see the green light on the DC8. If it's flashing then it's communicating with base unit. Check your apex login to see if the outlets on the DC8 are showing on the control panel.