[RndTbl] Ringing voltage and waveform in Cisco/Linksys ATA's
Hartmut W Sager
hwsager at marityme.net
Thu Oct 1 05:57:44 CDT 2015
Why do these Cisco/Linksys ATA's have some stupid defaults? I just played
with (er, configured) another one over the last weekend.
I always (have to) change the default ringing voltage in these
Cisco/Linksys ATA's from 85V trapezoidal to 90V sinusoidal, so that an
attached phone will ring reliably. I don't know for which part of the
planet (if any) their default is intended. From the standards I've studied
in the past, the trapezoidal waveform especially doesn't ring a Bell.
Hartmut W Sager - Tel +1-204-339-8331
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.muug.mb.ca/pipermail/roundtable/attachments/20151001/d83d06f7/attachment.html>
More information about the Roundtable
mailing list