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
Eric "ManxPower" Wieling
2008-Oct-10 17:11 UTC
[asterisk-users] Got event 17 (Polarity Reversal)...
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 > > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > >-- Consulting for Asterisk, Polycom, Sangoma, Digium, Cisco, LAN, WAN, QoS, T-1, PRI, Frame Relay, Linux, and network design. Based near Birmingham, AL. Now accepting clients worldwide. http://www.fnords.org/skillslist.html
On Fri, Oct 10, 2008 at 12:57:27PM -0400, 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.grep polarity /etc/asteirsk/chan_dahdi.conf See the documentation for answeronpolarityswitch and hanguponpolarityswitch . -- Tzafrir Cohen icq#16849755 jabber:tzafrir.cohen at xorcom.com +972-50-7952406 mailto:tzafrir.cohen at xorcom.com http://www.xorcom.com iax:guest at local.xorcom.com/tzafrir
Hi Jim,
We had this exact problem with our system for several years. A call
would come in with no caller ID and when we answered nobody would be
there. On the Asterisk console would be the "Got event 17 (Polarity
Reversal)" message.
We spent hours and hours on this. Our carrier was AT&T (SBC). I spoke
with their tech support several times and spoke with many phone guys.
Nobody could solve it.
We moved our office to a new location and are now using Comcast VOIP
lines into the TDM card and the problem is gone now. It had to be
something with the POTS lines we were getting from AT&T. Another
interesting thing is that we didn't get the calls all the time but when
we did get them they were ALWAYS on the hour or half-hour.
Thanks, Dan
-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Jim Duda
Sent: Friday, October 10, 2008 11:57 AM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] Got event 17 (Polarity Reversal)...
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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