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This phone is attached to a Partner panel somewhere in your building most likely. At that panel there is either a slot card or a carrier box with several cards in it. One of them is the processor card, on that card at the front should be an area at the bottom w/ a "+" plus sign on it, move the black (usually that color) slide and there will be a carrier for 2 AA batteries (or AAA), replace those and the info should be saved. Alternatively some of these system have a PCMCIA memory card that you can use to back them up and then restore them if something goes wrong later. If you find the main phone on your system (usually 34 button) it may even tell you the batteries need replaced. When we install we also highly recommend hooking the main phone system to an APC backup, even something as small as a 500-600 series just to both protect your investment and in small outages eliminate the worry of this problem.
That one doesn't sound too good.
You could perform a reset through programming which should clear the scratch pad.
Thats done by entering programming on either ext. 10 or 11
Press feature 00 then the left hand intercom twice.
Next enter # 728, the display should say reset save all then reboot the system.If the problem is still there, then the processor is malfunctioning and will need to be replaced.
Static on Partner systems is not too uncommon and more likely as the system ages. These systems use relays (electric switches) to connect to outside lines and extensions. The static is usually from a faulty relay, but sadly these are not really repairable by end users. A power outage is sometimes associated with spikes - short high voltage conditions that occur as the power comes back on. Any vulnerable component may fail at that time. The solution is to replace the bad circuit pack. These are available used - just use your search engine. Prevention can be as easy as installing a good surge and spike protector power strip between the system and the outlet.
This phone requires a phone system. The system itself stores the information. You need a programming and installation manual for your phone system, not the phone. You will need to determine the model number of your main phone system and look for the manual using that information. Phones only have user guides that explain how to use the features and do not get into programming the system.
Also, if you lost your programing in a power outage, most likely the memory battery is dead and this will keep happening in the future. Before making any programming changes, that battery needs to be replaced or you could possibly get away with a UPS battery backup system to power the entire phone system in a power outage.