I need to find a Merlin Telephone System Programming Manual. Can anyone locate a copy?

Question

It may be a Business Telephone System that has multiple lines. Also is there a backup power supply for these systems?

Answer 1

http://support.avaya.com/japple/css/japp...

Try here, you can download a pdf of most of the manuals and user documents, you may need to buy a programming manual, they are also available for sale online.  But this is the company that is handling the support of the Merlin System Phones.