First of all, thank you very much for choosing FIXYA today for your technical support needs.
I'm Joe, and I will be more than happy to assist you with your service request.
Here is a direct link to the ONLINE USER'S MANUAL for that model:http://www.asksts.com/DX80/Docs/ProgrammingManual.pdf
To view the Owner's Manual with Operating Instructions just use your mouse to click on the link, which is the underlined and blue highlighted text just above.
This will open a new web browser page automatically for you and allow you to view the information at the website indicated and the contents of the Owner's Manual.
You may need ADOBE READER installed on your computer to read PDF documents, although many computers already have this utility pre-installed.
You can always download this for free at WWW.ADOBE.COM
Click on the DOWNLOAD ADOBE READER button on right side of the ADOBE home page when you get there, then follow the onscreen instructions to install the software on your computer.
See page 22 of the manual for detailed instructions on HOW TO PROGRAM A NEW SYSTEM.
See page 69 of the manual for detailed instructions on HOW TO SPECIFY USER NAMES.
See page 249 of the manual for detailed instructions on HOW TO ASSIGN A USER NAME TO AN EXTENSION.
Please COMMENT back here to this page if you have any details to add, have any questions, have difficulty accessing the links, or just require further general assistance and I will respond as soon as I see it.
BEFORE leaving a rating OTHER THAN 5 STARS or a negative TESTIMONIAL, please contact me and I will immediately clear up any concerns or answer any additional questions that you might have until you are completely satisfied with the service provided. The FixYa rating system is a very important component of the Marketplace, and unfortunately once you post a rating or a testimonial to a solution, it cannot be changed at all later on.
Be sure to use the small blue ADD A COMMENT button located just below the text of this solution to leave any additional comments for me regarding this particular issue and I will respond right away.
I truly hope that was helpful to you.
Good luck and take care.