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sabastin 29-March-2008 09:57:50 AM
Comments


www.connectsystems.com/support/manuals/CS950.pdf
Posted by crouse


en.wikipedia.org/wiki/Telephone_call
Posted by crouse


It is a mix of 480 and 620 Hz tone, with on/off times of .5 sec/.5 sec. Basically indicate to the calling party that the called party is on the phone.
Posted by suresh123
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