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FXO disconnection

marahman78
Level 1
Level 1

‎03-26-2008 09:16 AM - edited ‎03-15-2019 09:39 AM

Is there any way to find which signals are coming from PSTN(Telco)side? I have a FXO disconnection problem and almost tried every thing. Please help.

Regards,

MAR

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18 Replies 18

paolo bevilacqua
Hall of Fame
Hall of Fame

‎03-26-2008 09:30 AM

Which country are you in?

Check the info from the great guys at:

http://www.3amsystems.com/wireline/tone-search.htm

Hope this helps, please rate post if it does!

marahman78
Level 1
Level 1
In response to paolo bevilacqua

‎03-26-2008 10:05 PM

Yes, i've checked and i make a new custom tone but it didn't resolved my problem. Please advice.

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paolo bevilacqua
Hall of Fame
Hall of Fame
In response to marahman78

‎03-27-2008 02:36 AM

Record your tone on the PC, attach it here together with config and mentioen the applicable country.

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marahman78
Level 1
Level 1
In response to paolo bevilacqua

‎03-27-2008 04:25 AM

Please find the attached tone & config file. Country = Pakistan. Also find the debug file.

Regards,

MAR

Preview file
453 KB
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paolo bevilacqua
Hall of Fame
Hall of Fame
In response to marahman78

‎03-27-2008 05:18 AM

Hi, recording quality is marginal, but try 440 Hz, 275 ms on 275 ms off.

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marahman78
Level 1
Level 1
In response to paolo bevilacqua

‎03-27-2008 06:01 AM

Is voice port configuration is alright ?

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paolo bevilacqua
Hall of Fame
Hall of Fame
In response to marahman78

‎03-27-2008 06:05 AM

Seems so.

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marahman78
Level 1
Level 1
In response to paolo bevilacqua

‎03-28-2008 06:52 AM

I've checked but it didn't work. Please find the attached "debug vpm all" file. I'll be waiting for your useful suggestion.

Thanks

Preview file
5 KB
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paolo bevilacqua
Hall of Fame
Hall of Fame
In response to marahman78

‎03-28-2008 08:28 AM

Tone-based disconnect supervision is not very reliable and sometime doesn't work at all.

However in the debug seems like you're getting battery reversal, try that:

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800ae2d1.shtml#topic6

Good luck!

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marahman78
Level 1
Level 1
In response to paolo bevilacqua

‎03-31-2008 04:39 AM

I've tried but no luck. Is there any way to find out which type of signals PSTN are sending.

Regards,

MAR

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paolo bevilacqua
Hall of Fame
Hall of Fame
In response to marahman78

‎03-31-2008 05:18 AM

It's probably 425 Hz after all. The recording you sent has a lot of noise and the frequency analysis can be impacted. The main problem is that tone-based is unreliable in itself.

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marahman78
Level 1
Level 1
In response to paolo bevilacqua

‎04-02-2008 08:14 AM

Is there any way to find out which type of signals PSTN are sending ?

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paolo bevilacqua
Hall of Fame
Hall of Fame
In response to marahman78

‎04-02-2008 08:17 AM

They are sending the signals detailed above, problems is rotuter doesn't recognize them. Which exact IOS are you using ?

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marahman78
Level 1
Level 1
In response to paolo bevilacqua

‎04-02-2008 11:14 PM

Cisco IOS Software, 2800 Software (C2800NM-ADVENTERPRISEK9-M), Version 12.4(3h), RELEASE SOFTWARE (fc2)

c2800nm-adventerprisek9-mz.124-3h.bin

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