20 Most Recent Sony SPP-A900 Phone Questions & Answers

pls check this link:
http://www.amazon.com/Replacement-Cordless-Phone-battery-BP-T23/dp/B000JQOYH0
original sony replacement will give you best results - but the price is higher than non branded.
regards

Instructions below show how to erase messages - do you know how the messages were actually erased, and if any were not in fact erased? https://docs.sony.com/release/tam100.pdf

For the base station set the ringer switch on the base from high to low. To turn it off select off. You can find that switch on the panel where the phone plugs into the wall on the far left. The handset is adjusted the same way on the leftside as you are looking at the phone.

Not possible.

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