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I have a new asterisk server (details and conf files below) with
a TDM421p (2 fxs (phone), 1 fxo (pstn)). Noisy FXS lines. (analog
phones connected to TDM400 fxs modules) On the fxs lines there is a low static hiss all the time. For
example, if I pickup and press any key to break the dial tone, I hear the hiss.
It continues whether I make an internal call or call out using the pstn line on
the fxo module. It is useable, but it is a lot worse that connecting the
phone to my pstn directly. I have tried multiple phones. What should I expect? Q1: Can (should) the clarity of the TDM21p fxs line be as
good as a (not so good) pstn line? Q2: Will the noise on the line be affected by any parameters
in the zaptel.conf or Zapata.conf files? I did not see any that seems to be
related. Thanks, --BobG |
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