Have a Uniden DECT 2180 which tells me to "enter your voice mailbox number specified in your owners manual". I am unable to find out what this number is. Hope you can help me!

Les,

If you want to delete the actual voice mails, you have to go through your phone company (using their keypad commands) since voice mail is only accessible through your phone (but the voice mail messages are stored through your phone company provider).

Info from the Uniden DECT 6.0 6035 Manual:

Using the Voice Mail Service If you subscribe to a voice mail service, you can use your phone to access your voice mailbox. The new message LED on the handset ?ashes and VM appears in the handset display whenever you have messages waiting in yourvoice mailbox. When you subscribe to the service, your voice mail provider provides you with the access number and the required voice mail signaling tone. You can use your phonebook to store the access number.

Resetting the Voice Message Waiting Indicator

When you receive a new voice mail message, the new message LED on the top of the handset ?ashes and
appears in the handset display. In the event your message alert tone gets out of sync with your phone company's voice messaging system, you can reset back to its original "no messages waiting" state. To reset, press and hold [?nd hs] on the base for ?ve seconds. A beep sounds and the message alert tone is reset.

Here is the manual:
Uniden 6035 1 Owner Manual

Since you didn\'t specify the model of your Uniden DECT 6.0 system, please select it from the list beginning at scat/dectphones_mnl">http://www.uniden.com/scat/dectphones_mnl to download a copy of the manual.

If you subscribe to a voice mail service, you can use your phone to access your voice mailbox. The new message
LED on the handset flashes and appears in the handset display whenever you have messages waiting in your
voice mailbox. When you subscribe to the service, your voice mail provider provides you with the access number
and the required voice mail signaling tone. You can use your phonebook to store the access number

Since you declined to specify the model of your Uniden DECT 6.0 system, I can only suggest that you select it from the list beginning here to download the manual. The manual will tell you how to change the PIN and set up the voicemail system.

Since you declined to specify the model of your Uniden DECT 6.0 phone, select it from the list beginning at
http://www.uniden.com/owners-manuals/dect-phones/scat/dectphones_mnl/

Enter the model of your Uniden DECT 6.0 phone into the list beginning at
http://www.uniden.com/owners-manuals/dect-phones/scat/dectphones_mnl/
to get the manual.

If you need further help, please reply to this post specifying the model of your machine.

Select the model of your Uniden DECT 6.0 phone from the list beginning at
http://www.uniden.com/owners-manuals/dect-phones/scat/dectphones_mnl/
to get the manual.

Since you didn't specify the model of your phone, select it from the list beginning at
http://www.uniden.com/owners-manuals/dect-phones/scat/dectphones_mnl/

You didn't specify the model of your Uniden DECT 6.0 system so I can't give you a definite answer, but on many models you press the Menu/OK button to access the main menu, scroll to the "AM Operation" submenu, then select "Remote PIN" to change it.

Select the model from the list beginning at
http://www.uniden.com/owners-manuals/dect-phones/scat/dectphones_mnl/
to get the manual for your system.

Here is the link. to a pdf version of the phone manual.