Phone hang-up voice reminder circuit

Published:2011/5/3 9:36:00 Author:Christina | Keyword: Phone hang-up, voice reminder | From:SeekIC

With the increasing of living space, many families install some telephone extensions in different rooms, but the phone always can not be dialed in because one of the telephone extension does not hang. The phone hang-up voice reminder circuit is as shown, it can automatically issues the sound of call is not hung, please check the extensions to remind the user check the extensions.



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