How do I delete incoming call log? DECT 6.0

1 Press Cid when phone on standby
2 Press Menu/Select
3 Select DELETE ALL
4 When phone asks you to confirm select YES

Open the Caller ID list, press OPTIONS, then select "Delete All." See pages 22 and 23 of this manual: http://www.uniden.com/content/ebiz/uniden/resources/ownersmanuals/DECT4096om.pdf

Since you declined to specify the model of your Uniden DECT 6.0 system, I can only direct you to select it from the list beginning here.

Since you declined to specify the model of your VTech DECT 6.0 phone, please enter it into the search box here to download a copy of the manual.

Have you tried using 7 to delete messages or are you afraid you'll mess something else. 7 is the universal delete number. Try it, maybe leave yourself a message and use it as the guinea pig.
Alternately, does your handset have a button with an X on it and the word "delete" or "clear"? If so that is delete key and pressing it once deletes the one message and pressing it a second time will delete them all,

Here is a link to download Uniden manuals. There are numerous different model numbers of DECT 6.0 phones.

http://www.uniden.com/index/manuals_results.cfm?cat=59

hi,
if you want to record outgoing message on Answer of BINATONE FUSION 2210 DECT phone, his the step you will follow.
to turn A/M on press R then 5.
to turn A/M off press R then 6.
if you want to record Outgoing Message, press R then 1.
After beep record your message.
Press 0 when you have finished your message, then C to return to standby mode.
To listen to incoming messages, press R then 8.
New messages are then played back.
Press 4 to delete message.
thanks for using fixya

Since you declined to specify the model of your VTech DECT 6.0 system, I can only suggest you enter it into the search box here to download the manual.