Ringing voltage and waveform in Cisco/Linksys ATA's
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
IIRC: Japan. On 2015-10-01 05:57 AM, Hartmut W Sager wrote:
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
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Hartmut W Sager