22 Jul
2014
22 Jul
'14
5:22 a.m.
On Mon, 21 Jul 2014, Bob van der Poel wrote:
I currently have a "skype" phone connected
to USB which works just fine to make
calls. Only problem is that the cord is short :) and the quality is not the
greatest.
So, can I connect a regular POTS phone via a USB thing? What are they called and
do they work with Linux? I assume that the skype phone just acts like a soundcard
... same with what I want?
Plug it in and see what differences it makes to arecord -l and aplay -l
POTS phone:
- expects a dc voltage across the line. Not so phantom, phantom power...
- expects 600ohm match... depends on how old it is though, newer may be
less picky
- runs audio both ways on the same line... this may be more difficult to
deal with. (echo cancelling)
Better to use two separate lines... prolly what the skype handset does.
--
Len Ovens
www.ovenwerks.net