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Joined: Apr 2005
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jbailey Offline OP
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I have a line that works fine when I plug a standard phone into it, but when it's plugged into the TDA50 I can't get a dial tone from a handset. It's not the CO port on the TDA50, because I've moved the nonworking line to other working CO ports and it won't give me a dialtone on those either.

There is really nothing I can see to adjust on the TDA50 to try to figure out the problem.

Anyone seen something like this before?

Thanks...Josh

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Have you gone over all the programming?

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jbailey Offline OP
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Thanks for responding.

What I did to test the line was plug it into CO2 which works fine from all the handsets normally. Of course when I plug the nonworking line in, non of the phones can access CO2.

It's gotta be something different about how that line is provisioned from the carrier, but I can't figure it out.

Does polarity matter? I'll try reversing it and see if that helps.

Let me know if you have any ideas.

Thanks...Josh

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But does CO 2 work fin when plugged into CO 1 port?
I still think it's in the programming.
If you really suspect the LEC then take an unused Ext. port and loop it into CO 1 port if you can't draw the intercom tone off that Ext. through CO port 1 then it has to be either hardware or programming.
Gem

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jbailey Offline OP
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But does CO 2 work fin when plugged into CO 1 port? Yes

CO 3 works fine in all four LCO4 Ports as well. It's only CO 1 that is not working no matter what LC0 port I plug it into.

I'll try the loop experiment.





[This message has been edited by jbailey (edited May 14, 2005).]

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Well in that case I would 1st look at the IW from the D-marc. an easy test is to switch lines 1 & 2 at the Dmarc and see where the trouble is.
Anything bridged or "T-tapped" off of line 1?

If it's not your IW then give it to your provider. You could make a few quick tests on the line like idle voltage, off hook voltage and loop current.


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