Index: channels/chan_dahdi.c
===================================================================
--- channels/chan_dahdi.c	(revision 278424)
+++ channels/chan_dahdi.c	(working copy)
@@ -2744,6 +2744,17 @@
 	p->subs[SUB_REAL].needringing = value;
 }
 
+static void my_set_polarity(void *pvt, int value)
+{
+	struct dahdi_pvt *p = pvt;
+
+	if (p->channel == CHAN_PSEUDO)
+		return;
+
+	ioctl(p->subs[SUB_REAL].dfd, DAHDI_SETPOLARITY, &value);
+}
+
+
 static int my_start(void *pvt)
 {
 	struct dahdi_pvt *p = pvt;
@@ -3461,6 +3472,7 @@
 	.set_pulsedial = my_set_pulsedial,
 	.get_orig_dialstring = my_get_orig_dialstring,
 	.set_needringing = my_set_needringing,
+	.set_polarity = my_set_polarity,
 };
 
 /*! Round robin search locations. */
Index: channels/sig_analog.c
===================================================================
--- channels/sig_analog.c	(revision 278424)
+++ channels/sig_analog.c	(working copy)
@@ -530,6 +530,13 @@
 	}
 }
 
+static void analog_set_polarity(struct analog_pvt *p, int value)
+{
+	if (p->calls->set_polarity) {
+		return p->calls->set_polarity(p->chan_pvt, value);
+	}
+}
+
 static int analog_dsp_set_digitmode(struct analog_pvt *p, enum analog_dsp_digitmode mode)
 {
 	if (p->calls->dsp_set_digitmode) {
@@ -1264,6 +1271,8 @@
 		case ANALOG_SIG_FXOGS:
 		case ANALOG_SIG_FXOLS:
 		case ANALOG_SIG_FXOKS:
+			ast_verb(0, "ALEC FXS analog hangup %s\n", ast->name);
+			analog_set_polarity(p, 0 );
 			/* If they're off hook, try playing congestion */
 			if (analog_is_off_hook(p)) {
 				analog_play_tone(p, ANALOG_SUB_REAL, ANALOG_TONE_CONGESTION);
@@ -1274,6 +1283,7 @@
 		case ANALOG_SIG_FXSGS:
 		case ANALOG_SIG_FXSLS:
 		case ANALOG_SIG_FXSKS:
+			ast_verb(0, "ALEC FXO analog hangup %s\n", ast->name);
 			/* Make sure we're not made available for at least two seconds assuming
 			   we were actually used for an inbound or outbound call. */
 			if (ast->_state != AST_STATE_RESERVED) {
@@ -1357,9 +1367,23 @@
 				p->owner = p->subs[ANALOG_SUB_REAL].owner;
 			}
 		}
-		if ((p->sig == ANALOG_SIG_FXSLS) || (p->sig == ANALOG_SIG_FXSKS) || (p->sig == ANALOG_SIG_FXSGS)) {
+
+		switch (p->sig) {
+		case ANALOG_SIG_FXSLS:
+		case ANALOG_SIG_FXSKS:
+		case ANALOG_SIG_FXSGS:
+			ast_verb(0, "ALEC FXO analog answer %s\n", ast->name);
 			analog_set_echocanceller(p, 1);
 			analog_train_echocanceller(p);
+			break;
+		case ANALOG_SIG_FXOLS:
+		case ANALOG_SIG_FXOKS:
+		case ANALOG_SIG_FXOGS:
+			ast_verb(0, "ALEC FXS analog answer %s\n", ast->name);
+			analog_set_polarity(p, 1 );
+			break;
+		default:
+			break;
 		}
 		break;
 	default:
Index: channels/sig_analog.h
===================================================================
--- channels/sig_analog.h	(revision 278424)
+++ channels/sig_analog.h	(working copy)
@@ -147,6 +147,7 @@
 	/*! \brief Set channel off hook */
 	int (* const off_hook)(void *pvt);
 	void (* const set_needringing)(void *pvt, int value);
+	void (* const set_polarity)(void *pvt, int value);
 	/* We're assuming that we're going to only wink on ANALOG_SUB_REAL - even though in the code there's an argument to the index
 	 * function */
 	int (* const wink)(void *pvt, enum analog_sub sub);