diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 0b10358f1f57d17ecf54b776dc054a7b0dcb0906..223f2fe7812c656e00ed05f26e844d2a0829d5d6 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -536,6 +536,8 @@ static enum transfermodes global_allowtransfer;	/*!< SIP Refer restriction schem
 static int global_capability = AST_FORMAT_ULAW | AST_FORMAT_ALAW | AST_FORMAT_GSM | AST_FORMAT_H263;
 static int noncodeccapability = AST_RTP_DTMF;
 
+static int global_ignoreoodreplies = 1;
+
 /* Object counters */
 static int suserobjs = 0;                /*!< Static users */
 static int ruserobjs = 0;                /*!< Realtime users */
@@ -4257,9 +4259,14 @@ static struct sip_pvt *find_call(struct sip_request *req, struct sockaddr_in *si
 		}
 	}
 	ast_mutex_unlock(&iflock);
+
+	if (req->method == SIP_RESPONSE && global_ignoreoodreplies)
+		return NULL;
+
 	/* Allocate new call */
 	if ((p = sip_alloc(callid, sin, 1, intended_method)))
 		ast_mutex_lock(&p->lock);
+
 	return p;
 }
 
@@ -9985,6 +9992,7 @@ static int sip_show_settings(int fd, int argc, char *argv[])
 	ast_cli(fd, "  Allow subscriptions:    %s\n", ast_test_flag(&global_flags[1], SIP_PAGE2_ALLOWSUBSCRIBE) ? "Yes" : "No");
 	ast_cli(fd, "  Allow overlap dialing:  %s\n", ast_test_flag(&global_flags[1], SIP_PAGE2_ALLOWOVERLAP) ? "Yes" : "No");
 	ast_cli(fd, "  Promsic. redir:         %s\n", ast_test_flag(&global_flags[0], SIP_PROMISCREDIR) ? "Yes" : "No");
+	ast_cli(fd, "  Drop misc replies:      %s\n", global_ignoreoodreplies ? "Yes" : "No");
 	ast_cli(fd, "  SIP domain support:     %s\n", AST_LIST_EMPTY(&domain_list) ? "No" : "Yes");
 	ast_cli(fd, "  Call to non-local dom.: %s\n", allow_external_domains ? "Yes" : "No");
 	ast_cli(fd, "  URI user is phone no:   %s\n", ast_test_flag(&global_flags[0], SIP_USEREQPHONE) ? "Yes" : "No");
@@ -14968,6 +14976,11 @@ static int handle_common_options(struct ast_flags *flags, struct ast_flags *mask
 	} else if (!strcasecmp(v->name, "rfc2833compensate")) {
 		ast_set_flag(&mask[1], SIP_PAGE2_RFC2833_COMPENSATE);
 		ast_set2_flag(&flags[1], ast_true(v->value), SIP_PAGE2_RFC2833_COMPENSATE);
+	} else if (!strcasecmp(v->name, "ignoreoodreplies")) {
+		if (ast_true(v->value))
+			global_ignoreoodreplies = 1;
+		else
+			global_ignoreoodreplies = 0;
 	}
 
 	return res;
@@ -15657,6 +15670,7 @@ static int reload_config(enum channelreloadreason reason)
 	ast_set_flag(&global_flags[1], SIP_PAGE2_ALLOWSUBSCRIBE);	/* Default for peers, users: TRUE */
 	ast_set_flag(&global_flags[1], SIP_PAGE2_ALLOWOVERLAP);		/* Default for peers, users: TRUE */
 	ast_set_flag(&global_flags[1], SIP_PAGE2_RTUPDATE);
+	global_ignoreoodreplies = 1;
 
 	/* Initialize some reasonable defaults at SIP reload (used both for channel and as default for peers and users */
 	ast_copy_string(default_context, DEFAULT_CONTEXT, sizeof(default_context));
diff --git a/configs/sip.conf.sample b/configs/sip.conf.sample
index efa78848cad6e9f359f9c381338612ce316e4cc4..4000ed5abcb0bfcf16e039282137fcc7e01e4c33 100644
--- a/configs/sip.conf.sample
+++ b/configs/sip.conf.sample
@@ -132,6 +132,8 @@ srvlookup=yes			; Enable DNS SRV lookups on outbound calls
 				; contrary to the RFC3551 specification, the peer _should_
 				; be negotiating AAL2-G726-32 instead :-(
 
+;ignoreoodreplies = no          ; If no then out of dialog replies will not be ignored
+
 ;
 ; If regcontext is specified, Asterisk will dynamically create and destroy a
 ; NoOp priority 1 extension for a given peer who registers or unregisters with