In a message dated 10/6/00 12:02:35 AM, koko99@mb.sympatico.ca writes: << Am owner of a SOT ... have been reluctant to use because I wasn,t sure calibration was correct. Pick up your phone and let the SOT listen to the dial tone. In my area, and presumably elsewhere, the dial tone is a square wave audio 440 cps tone. The lights should stop dead on. Bill Simon Phoenix
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