Index: chan_zap.c
===================================================================
RCS file: /usr/cvsroot/asterisk/channels/chan_zap.c,v
retrieving revision 1.420
diff -u -r1.420 chan_zap.c
--- chan_zap.c	23 Mar 2005 21:12:01 -0000	1.420
+++ chan_zap.c	27 Mar 2005 16:23:27 -0000
@@ -3858,8 +3858,21 @@
 				     (ast->_state == AST_STATE_RINGING))) {
 					ast_log(LOG_DEBUG, "Answering on polarity switch!\n");
 					ast_setstate(p->owner, AST_STATE_UP);
+					gettimeofday(&p->polaritydelaytv, NULL);
 				} else 
-					ast_log(LOG_DEBUG, "Ignore switch to REVERSED Polarity on channel %d, state %d\n", p->channel, ast->_state);
+					//If polarity was IDLE and we are not 
+					//in state DIALING or RINGING, it's a 
+					//remote hungup, at least in Spain 
+					//Added check for FXS signaling, to be
+					//sure it doesn't break other things
+					//julianjm@gmail.com
+					if (p->hanguponpolarityswitch && (p->sig==SIG_FXSLS || p->sig==SIG_FXSGS || p->sig==SIG_FXSKS)) {
+	                                        ast_log(LOG_DEBUG, "Hangup due to Reverse Polarity on channel %d (julianjm)\n", p->channel);
+	                                        ast_softhangup(p->owner, AST_SOFTHANGUP_EXPLICIT);
+        	                                p->polarity = POLARITY_IDLE;
+					} else {
+						ast_log(LOG_DEBUG, "Ignore switch to REVERSED Polarity on channel %d, state %d\n", p->channel, ast->_state);
+					}
 			} else if(p->hanguponpolarityswitch &&
 				(p->polarityonanswerdelay > 0) &&
 			        (p->polarity == POLARITY_REV) &&