[asterisk-users] Got event 17 (Polarity Reversal)...

[Eric "ManxPower" Wieling]

You should not get that message on analog lines in the USA or Canada.  I 
suspect your line has a provisioning issue or is using different 
signaling than you think it is using.

Jim Duda wrote:
> Can anyone tell me what this message means?
> 
> Got event 17 (Polarity Reversal)...
> 
> I'm running DAHDI 2.0 with a TDM401 card.  Asterisk version 1.6.0.
> 
> It appears that I get this Polarity Reversal each time an inbound call 
> hangs up. This results in another ring, but no one is there.  It appears 
> as an unknown caller, but I believe its a phantom.
> 
> Thanks,
> 
> Jim
> 
> [Oct 10 12:47:54] NOTICE[6669]: chan_dahdi.c:7379 mwi_thread: Got event 
> 17 (Polarity Reversal)...  Passing along to ss_thread
>      -- Starting simple switch on 'DAHDI/4-1'
> [Oct 10 12:47:55] NOTICE[6671]: chan_dahdi.c:7114 ss_thread: Got event 4 
> (Alarm)...
> [Oct 10 12:47:55] NOTICE[6671]: chan_dahdi.c:7114 ss_thread: Got event 
> 17 (Polarity Reversal)...
> [Oct 10 12:47:56] NOTICE[6671]: chan_dahdi.c:7114 ss_thread: Got event 5 
> (No more alarm)...
>      -- Executing [s at incoming:1] Goto("DAHDI/4-1", "incoming-dial,s,1") 
> in new stack
> 
> 
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