I have a presidian corded phone for which I have lost the manual. I am unable to increase the...
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I have a presidian corded phone for which I have lost the manual. I am unable to increase the ringer volume and hence can't hear the phone when it rings. I was in a radio shack store and they had a phone, but no manual that they could show me and were unable to help. Is there someone that can tell me how to increase the ringer volume. Phylls Everett