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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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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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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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