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Default What impedence setting should I choose for my SPA3102 FXO port?

If you can match the impedence setting expected by your country's PSTN, you will have much better results in detecting the proper state of your PSTN line as well as have better audio quality.

The following settings apply to various countries:
  • 600 ohms (US/Canada)
  • 900 ohms (US/Canada)
  • 220+820//115nF (Germany)
  • 200+680//100nF (China)
  • 370+620//310nF (UK)
  • 180+910//150nF (France)
  • 270+750//150nF (Sweden)
  • 120+820//110nF (Norway)
  • 150+830//72nF (Belgium)
  • 400+500//330nF (Denmark)


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Created by eric, September 16th, 2007 at 04:08 AM
Last edited by eric, September 16th, 2007 at 04:08 AM
3 Comments , 2474 Views
  #2 (permalink)  
Old September 17th, 2007, 06:23 AM
aquatooth aquatooth is offline
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Default Re: What impedence setting should I choose for my SPA3102 FXO port?

200+680//100nF (China) unfortunately is not listed as an option (firmware 5.1.7(GW))
220+820||120nF seems to work for me (near shanghai)

Simon
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Old November 1st, 2007, 08:59 AM
zultron zultron is offline
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Default Settings in China?

Have you been successful getting the SPA3102 working in China? Mine works great, except when someone calls in and hangs up, the SPA3102 keeps the phone off hook for a couple of minutes until all the Asterisk prompts time out and Asterisk drops the call. Thanks!
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Old November 1st, 2007, 09:09 AM
aquatooth aquatooth is offline
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Default Re: What impedence setting should I choose for my SPA3102 FXO port?

Yes! mine is mostly working. attached are my settings in case it is of help. I haven't yet got CELL>PSTN>VOIP working but I think it is my provider.

PM me.

I am not using asterisk yet so it could be a setting there??


Simon
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