On Sat, 11 Oct 2008, Jorge Mendoza wrote: > I founded this behaviour in the past. When the CO provides reversal > polarity and the FXO port is configured to ignore polarity events, then > a reversal polarity could be detected as ringing if the > hardware/software is not well designed or configured. > So, if the CO provides polarity reversal, why not set answer and release > supervision to yes?
We need the flexability to answer either way... Here in the UK the (BT) exchange will do a polarity reversal to signal incoming CLI - it then send the CLI, *then* sends the ring signals, so answering on polarity reversal would be wrong. They also do a random polarity reversal most nights too - some sort of automated line testing. Eg. from my home box: Oct 7 01:40:28 NOTICE[15581] chan_zap.c: Got event 17 (Polarity Reversal)... Oct 9 03:53:06 NOTICE[19904] chan_zap.c: Got event 17 (Polarity Reversal)... Note the times... Gordon > > Jorge Mendoza > > > Jim Duda wrote: >> If by default Asterisk ignores all polarity events, then why >> does it cause the Dialplan to start? >> >> I did set answeronplarityswitch to no, however, I have had >> the problem occur once already, so, you suspicion might >> be correct. >> >> Jim >> >> Tzafrir Cohen wrote: >> >>> On Fri, Oct 10, 2008 at 05:51:29PM -0400, Jim Duda wrote: >>> >>>> Tzafrir, >>>> >>>> Thanks for the tip. I'm researching answeronpoliaryswitch. I suspect >>>> this will solve my issue. I never would have know to look for this. >>>> >>>> Thanks much! You made my day :-) >>>> >>> Hmm... I might have misled you. By default Asterisk ignores all polarity >>> events. Using the polarity events can be a useful feature, but I suspect >>> that it is not the cause of your original problem. >>> >>> >> >> >> _______________________________________________ >> -- 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 >> > > > _______________________________________________ > -- 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 > _______________________________________________ -- 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