|
Telephone switch applies how much voltage across tip and ring? vasunair 13-March-2008 09:02:58 AMComments www.freepatentsonline.com/5280523.html Posted by crouse 48VDC Posted by crouse -48 volts of DC Posted by Sandeepen |
Posted: 14-March-2008 04:05:20 PM By: Sandeepen -48 volts of DC | |
Posted: 08-October-2009 04:04:39 AM By: crouse 48VDC | |
Posted: 08-October-2009 04:05:22 AM By: crouse www.freepatentsonline.com/5280523.html |