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n/a
DELETED (Inactive)
26 Posts |
 Posted - Aug 05 2003 : 01:20:53 AM
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i connect my pc sound card to the telephone line directly , but i only can hear very weak sound signal in the phone, do i need to make a amplifier when i play the sound in telephone line?
i connect the MCI to the telephone line directly ,also cant hear the sound ,but i connect the speaker to the telephone directly, i can hear the sound from the speaker clearly, why?
thanks!
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Epsilon!
Mad Scientist
Canada
276 Posts |
Posted - Aug 05 2003 : 09:48:40 AM
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Carefull with connecting things directly to the phone line..
its between 50-60V depending where you live. you WILL burn your soundcard! (I did) :p
Because the computer operates between 3.3-12VDC, they use small reansistors that cant landle the telephone voltage.
At least use a bunch or resistors.. Oh, and if you connect it to the soundcard, it might make the line off-hook and you wont know whos calling.
just hack a phone open and use the speaker output and microphone input form that phone.
Edited by - Epsilon! on Aug 05 2003 10:03:09 AM |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Aug 05 2003 : 11:10:04 AM
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I have a schematic on exactly how to do this, but I can't access it right now...Will post in a few days.
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play sound in the telephone line
