using regular phone as voip device with regular modem?

using regular phone as voip device with regular modem?
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using regular phone as voip device with regular modem? hygum 03-21-2005
Posted by hygum on March 21, 2005, 1:07 pm
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Is it possible to use my regular (old) telephone as a speak/hear-device
(sort of headset) with softphone/voip-software through my old dial-up
modem? Something like the modem converts the analog audio signal from
the telephone to wave?



Pure Networks
Posted by Stanley Reynolds on March 21, 2005, 7:29 pm
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> Is it possible to use my regular (old) telephone as a speak/hear-device
> (sort of headset) with softphone/voip-software through my old dial-up
> modem? Something like the modem converts the analog audio signal from
> the telephone to wave?
>
Very few modems are able to work this way even if you have the software to
do this. Best bet is a special usb phone or a phone adapter that connects
your phone to the internet without a computer. Digium modem cards and
asterisk is the reason the answer is not "no". This is way more than most
people want to do and adapters/usb phones can be found for less than $100
usd.




Posted by wkearney99 on March 21, 2005, 11:12 pm
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If it's a regular telephone then you need to use an ATA device. This
provides a 'dial tone' to a regular telephone. Also know as an FXS port.
They're generally around $90. Others can be had that will connect an old
phone to the USB port of a PC. These are around $50 but require the PC be
running to use the phone, whereas an ATA is stand-alone.

A 'old dial up modem' has little use for VoIP activities.


> Is it possible to use my regular (old) telephone as a speak/hear-device
> (sort of headset) with softphone/voip-software through my old dial-up
> modem? Something like the modem converts the analog audio signal from
> the telephone to wave?
>



Posted by hygum on March 22, 2005, 10:54 pm
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I will prefer use my old phone instead of a headset - the phone is made
for the purpose. I will try making it go into the sound jacks



Posted by Stanley Reynolds on March 23, 2005, 9:51 am
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> I will prefer use my old phone instead of a headset - the phone is made
> for the purpose. I will try making it go into the sound jacks
>
The headset about 600 ohms should work ok on the soundcard but the mic if
carbon element may need some matching.

This has some good ideas:

http://www.epanorama.net/circuits/teleinterface.html#interference





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other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

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