diff --git a/README.md b/README.md
index 3488787d0..3c6fd7f70 100644
--- a/README.md
+++ b/README.md
@@ -192,6 +192,7 @@ option and which are reproduced below:
 	  -o, --timeout=SECS               RTP timeout
 	  -s, --silent-timeout=SECS        RTP timeout for muted
 	  -a, --final-timeout=SECS         Call timeout
+	  --offer-timeout=SECS             Timeout for incomplete one-sided calls
 	  -p, --pidfile=FILE               Write PID to file
 	  -f, --foreground                 Don't fork to background
 	  -m, --port-min=INT               Lowest port to use for RTP
@@ -335,6 +336,11 @@ The options are described in more detail below.
 	The number of seconds since call creation, after call is deleted. Useful for limiting the lifetime of a call.
 	This feature can be disabled by setting the parameter to 0. By default this timeout is disabled.
 
+* --offer-timeout
+
+	This timeout (in seconds) is applied to calls which only had an `offer` but no `answer`.
+	Defaults to 3600 (one hour).
+
 * -p, --pidfile
 
 	Specifies a path and file name to write the daemon's PID number to.
diff --git a/daemon/call.c b/daemon/call.c
index 03a084c41..cd5dc86b3 100644
--- a/daemon/call.c
+++ b/daemon/call.c
@@ -249,10 +249,14 @@ no_sfd:
 
 		check = rtpe_config.timeout;
 		tmp_t_reason = TIMEOUT;
-		if (!MEDIA_ISSET(ps->media, RECV) || !sfd || !PS_ISSET(ps, FILLED)) {
+		if (!MEDIA_ISSET(ps->media, RECV) || !sfd) {
 			check = rtpe_config.silent_timeout;
 			tmp_t_reason = SILENT_TIMEOUT;
 		}
+		else if (!PS_ISSET(ps, FILLED)) {
+			check = rtpe_config.offer_timeout;
+			tmp_t_reason = OFFER_TIMEOUT;
+		}
 
 		if (rtpe_now.tv_sec - atomic64_get(timestamp) < check)
 			good = 1;
diff --git a/daemon/call.h b/daemon/call.h
index 778928a0a..4623f6cd4 100644
--- a/daemon/call.h
+++ b/daemon/call.h
@@ -29,7 +29,8 @@ enum termination_reason {
 	FORCED=2,
 	TIMEOUT=3,
 	SILENT_TIMEOUT=4,
-	FINAL_TIMEOUT=5
+	FINAL_TIMEOUT=5,
+	OFFER_TIMEOUT=6,
 };
 
 enum tag_type {
diff --git a/daemon/cdr.c b/daemon/cdr.c
index 0d98e8f94..be1314569 100644
--- a/daemon/cdr.c
+++ b/daemon/cdr.c
@@ -13,6 +13,7 @@ static const char * const __term_reason_texts[] = {
 	[FORCED] = "FORCED",
 	[SILENT_TIMEOUT] = "SILENT_TIMEOUT",
 	[FINAL_TIMEOUT] = "FINAL_TIMEOUT",
+	[OFFER_TIMEOUT] = "OFFER_TIMEOUT",
 };
 static const char * const __tag_type_texts[] = {
 	[FROM_TAG] = "FROM_TAG",
diff --git a/daemon/cli.c b/daemon/cli.c
index a7f7f0480..849ac1f7d 100644
--- a/daemon/cli.c
+++ b/daemon/cli.c
@@ -46,6 +46,7 @@ static void cli_incoming_set_maxopenfiles(str *instr, struct streambuf *replybuf
 static void cli_incoming_set_maxsessions(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_set_timeout(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_set_silenttimeout(str *instr, struct streambuf *replybuffer);
+static void cli_incoming_set_offertimeout(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_set_finaltimeout(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_set_loglevel(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_set_redisallowederrors(str *instr, struct streambuf *replybuffer);
@@ -65,6 +66,7 @@ static void cli_incoming_list_totals(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_list_sessions(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_list_timeout(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_list_silenttimeout(str *instr, struct streambuf *replybuffer);
+static void cli_incoming_list_offertimeout(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_list_finaltimeout(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_list_loglevel(str *instr, struct streambuf *replybuffer);
 static void cli_incoming_list_loglevel(str *instr, struct streambuf *replybuffer);
@@ -90,6 +92,7 @@ static const cli_handler_t cli_set_handlers[] = {
 	{ "maxsessions",		cli_incoming_set_maxsessions		},
 	{ "timeout",			cli_incoming_set_timeout		},
 	{ "silenttimeout",		cli_incoming_set_silenttimeout		},
+	{ "offertimeout",		cli_incoming_set_offertimeout		},
 	{ "finaltimeout",		cli_incoming_set_finaltimeout		},
 	{ "loglevel",			cli_incoming_set_loglevel		},
 	{ "redisallowederrors",		cli_incoming_set_redisallowederrors	},
@@ -107,6 +110,7 @@ static const cli_handler_t cli_list_handlers[] = {
 	{ "maxsessions",		cli_incoming_list_maxsessions		},
 	{ "timeout",			cli_incoming_list_timeout		},
 	{ "silenttimeout",		cli_incoming_list_silenttimeout		},
+	{ "offertimeout",		cli_incoming_list_offertimeout		},
 	{ "finaltimeout",		cli_incoming_list_finaltimeout		},
 	{ "loglevel",			cli_incoming_list_loglevel		},
 	{ "redisallowederrors",		cli_incoming_list_redisallowederrors	},
@@ -211,12 +215,14 @@ static void cli_incoming_params_start(str *instr, struct streambuf *replybuffer)
 	struct intf_config *ifa;
 
 	streambuf_printf(replybuffer, "table = %d\nmax-sessions = %d\ntimeout = %d\nsilent-timeout = %d\nfinal-timeout = %d\n"
+			"offer-timeout = %d\n"
 			"delete-delay = %d\nredis-expires = %d\ntos = %d\ncontrol-tos = %d\ngraphite-interval = %d\nredis-num-threads = %d\n"
 			"homer-protocol = %d\nhomer-id = %d\nno-fallback = %d\nport-min = %d\nport-max = %d\nredis = %s:%d/%d\n"
 			"redis-write = %s:%d/%d\nno-redis-required = %d\nnum-threads = %d\nxmlrpc-format = %d\nlog_format = %d\n"
 			"redis_allowed_errors = %d\nredis_disable_time = %d\nredis_cmd_timeout = %d\nredis_connect_timeout = %d\n",
 			initial_rtpe_config.kernel_table, initial_rtpe_config.max_sessions, initial_rtpe_config.timeout,
-			initial_rtpe_config.silent_timeout, initial_rtpe_config.final_timeout, initial_rtpe_config.delete_delay,
+			initial_rtpe_config.silent_timeout, initial_rtpe_config.final_timeout, initial_rtpe_config.offer_timeout,
+			initial_rtpe_config.delete_delay,
 			initial_rtpe_config.redis_expires_secs, initial_rtpe_config.default_tos, initial_rtpe_config.control_tos,
 			initial_rtpe_config.graphite_interval, initial_rtpe_config.redis_num_threads, initial_rtpe_config.homer_protocol,
 			initial_rtpe_config.homer_id, initial_rtpe_config.no_fallback, initial_rtpe_config.port_min, initial_rtpe_config.port_max,
@@ -253,12 +259,15 @@ static void cli_incoming_params_current(str *instr, struct streambuf *replybuffe
 	struct intf_config *ifa;
 
 	streambuf_printf(replybuffer, "table = %d\nmax-sessions = %d\ntimeout = %d\nsilent-timeout = %d\nfinal-timeout = %d\n"
+			"offer-timeout = %d\n"
 			"delete-delay = %d\nredis-expires = %d\ntos = %d\ncontrol-tos = %d\ngraphite-interval = %d\nredis-num-threads = %d\n"
 			"homer-protocol = %d\nhomer-id = %d\nno-fallback = %d\nport-min = %d\nport-max = %d\nredis-db = %d\n"
 			"redis-write-db = %d\nno-redis-required = %d\nnum-threads = %d\nxmlrpc-format = %d\nlog_format = %d\n"
 			"redis_allowed_errors = %d\nredis_disable_time = %d\nredis_cmd_timeout = %d\nredis_connect_timeout = %d\n",
 			rtpe_config.kernel_table, rtpe_config.max_sessions, rtpe_config.timeout, rtpe_config.silent_timeout,
-			rtpe_config.final_timeout, rtpe_config.delete_delay, rtpe_config.redis_expires_secs, rtpe_config.default_tos,
+			rtpe_config.final_timeout,
+			rtpe_config.offer_timeout,
+			rtpe_config.delete_delay, rtpe_config.redis_expires_secs, rtpe_config.default_tos,
 			rtpe_config.control_tos, rtpe_config.graphite_interval, rtpe_config.redis_num_threads, rtpe_config.homer_protocol,
 			rtpe_config.homer_id, rtpe_config.no_fallback, rtpe_config.port_min, rtpe_config.port_max,
 			rtpe_config.redis_db, rtpe_config.redis_write_db, rtpe_config.no_redis_required,
@@ -314,6 +323,7 @@ static void cli_incoming_params_diff(str *instr, struct streambuf *replybuffer)
 	int_diff_print(initial_rtpe_config.timeout, rtpe_config.timeout, "timeout", replybuffer);
 	int_diff_print(initial_rtpe_config.silent_timeout, rtpe_config.silent_timeout, "silent-timeout", replybuffer);
 	int_diff_print(initial_rtpe_config.final_timeout, rtpe_config.final_timeout, "final-timeout", replybuffer);
+	int_diff_print(initial_rtpe_config.offer_timeout, rtpe_config.offer_timeout, "offer-timeout", replybuffer);
 	int_diff_print(initial_rtpe_config.delete_delay, rtpe_config.delete_delay, "delete-delay", replybuffer);
 	int_diff_print(initial_rtpe_config.redis_expires_secs, rtpe_config.redis_expires_secs, "redis-expires", replybuffer);
 	int_diff_print(initial_rtpe_config.default_tos, rtpe_config.default_tos, "default-tos", replybuffer);
@@ -400,6 +410,7 @@ static void cli_incoming_list_totals(str *instr, struct streambuf *replybuffer)
 	streambuf_printf(replybuffer, " Total timed-out sessions via TIMEOUT            :"UINT64F"\n",atomic64_get(&rtpe_totalstats.total_timeout_sess));
 	streambuf_printf(replybuffer, " Total timed-out sessions via SILENT_TIMEOUT     :"UINT64F"\n",atomic64_get(&rtpe_totalstats.total_silent_timeout_sess));
 	streambuf_printf(replybuffer, " Total timed-out sessions via FINAL_TIMEOUT      :"UINT64F"\n",atomic64_get(&rtpe_totalstats.total_final_timeout_sess));
+	streambuf_printf(replybuffer, " Total timed-out sessions via OFFER_TIMEOUT      :"UINT64F"\n",atomic64_get(&rtpe_totalstats.total_offer_timeout_sess));
 	streambuf_printf(replybuffer, " Total regular terminated sessions               :"UINT64F"\n",atomic64_get(&rtpe_totalstats.total_regular_term_sess));
 	streambuf_printf(replybuffer, " Total forced terminated sessions                :"UINT64F"\n",atomic64_get(&rtpe_totalstats.total_forced_term_sess));
 	streambuf_printf(replybuffer, " Total relayed packets                           :"UINT64F"\n",atomic64_get(&rtpe_totalstats.total_relayed_packets));
@@ -543,6 +554,16 @@ static void cli_incoming_list_finaltimeout(str *instr, struct streambuf *replybu
 
 	return ;
 }
+static void cli_incoming_list_offertimeout(str *instr, struct streambuf *replybuffer) {
+	rwlock_lock_r(&rtpe_config.config_lock);
+
+	/* don't lock anything while reading the value */
+	streambuf_printf(replybuffer, "OFFER_TIMEOUT=%u\n", rtpe_config.offer_timeout);
+
+	rwlock_unlock_r(&rtpe_config.config_lock);
+
+	return ;
+}
 
 static void cli_incoming_list_callid(str *instr, struct streambuf *replybuffer) {
    struct call* c=0;
@@ -818,6 +839,9 @@ static void cli_incoming_set_silenttimeout(str *instr, struct streambuf *replybu
 static void cli_incoming_set_finaltimeout(str *instr, struct streambuf *replybuffer) {
 	cli_incoming_set_gentimeout(instr, replybuffer, &rtpe_config.final_timeout);
 }
+static void cli_incoming_set_offertimeout(str *instr, struct streambuf *replybuffer) {
+	cli_incoming_set_gentimeout(instr, replybuffer, &rtpe_config.offer_timeout);
+}
 
 static void cli_incoming_list(str *instr, struct streambuf *replybuffer) {
    if (str_shift(instr, 1)) {
diff --git a/daemon/graphite.c b/daemon/graphite.c
index c10845fed..1a4bea7c5 100644
--- a/daemon/graphite.c
+++ b/daemon/graphite.c
@@ -116,6 +116,7 @@ int send_graphite_data(struct totalstats *sent_data) {
 	atomic64_local_copy_zero_struct(ts, &rtpe_totalstats_interval, total_rejected_sess);
 	atomic64_local_copy_zero_struct(ts, &rtpe_totalstats_interval, total_silent_timeout_sess);
 	atomic64_local_copy_zero_struct(ts, &rtpe_totalstats_interval, total_final_timeout_sess);
+	atomic64_local_copy_zero_struct(ts, &rtpe_totalstats_interval, total_offer_timeout_sess);
 	atomic64_local_copy_zero_struct(ts, &rtpe_totalstats_interval, total_regular_term_sess);
 	atomic64_local_copy_zero_struct(ts, &rtpe_totalstats_interval, total_forced_term_sess);
 	atomic64_local_copy_zero_struct(ts, &rtpe_totalstats_interval, total_relayed_packets);
@@ -220,6 +221,8 @@ int send_graphite_data(struct totalstats *sent_data) {
 	if (graphite_prefix!=NULL) { rc = sprintf(ptr,"%s",graphite_prefix); ptr += rc; }
 	rc = sprintf(ptr,"final_timeout_sess "UINT64F" %llu\n", atomic64_get_na(&ts->total_final_timeout_sess),(unsigned long long)rtpe_now.tv_sec); ptr += rc;
 	if (graphite_prefix!=NULL) { rc = sprintf(ptr,"%s",graphite_prefix); ptr += rc; }
+	rc = sprintf(ptr,"offer_timeout_sess "UINT64F" %llu\n", atomic64_get_na(&ts->total_offer_timeout_sess),(unsigned long long)rtpe_now.tv_sec); ptr += rc;
+	if (graphite_prefix!=NULL) { rc = sprintf(ptr,"%s",graphite_prefix); ptr += rc; }
 	rc = sprintf(ptr,"timeout_sess "UINT64F" %llu\n", atomic64_get_na(&ts->total_timeout_sess),(unsigned long long)rtpe_now.tv_sec); ptr += rc;
 	if (graphite_prefix!=NULL) { rc = sprintf(ptr,"%s",graphite_prefix); ptr += rc; }
 	rc = sprintf(ptr,"reject_sess "UINT64F" %llu\n", atomic64_get_na(&ts->total_rejected_sess),(unsigned long long)rtpe_now.tv_sec); ptr += rc;
diff --git a/daemon/main.c b/daemon/main.c
index 94ba33b41..3ee68dfa1 100644
--- a/daemon/main.c
+++ b/daemon/main.c
@@ -263,6 +263,7 @@ static void options(int *argc, char ***argv) {
 		{ "timeout",	'o', 0, G_OPTION_ARG_INT,	&rtpe_config.timeout,	"RTP timeout",			"SECS"		},
 		{ "silent-timeout",'s',0,G_OPTION_ARG_INT,	&rtpe_config.silent_timeout,"RTP timeout for muted",	"SECS"		},
 		{ "final-timeout",'a',0,G_OPTION_ARG_INT,	&rtpe_config.final_timeout,	"Call timeout",			"SECS"		},
+		{ "offer-timeout",0,0,	G_OPTION_ARG_INT,	&rtpe_config.offer_timeout,	"Timeout for incomplete one-sided calls",	"SECS"		},
 		{ "port-min",	'm', 0, G_OPTION_ARG_INT,	&rtpe_config.port_min,	"Lowest port to use for RTP",	"INT"		},
 		{ "port-max",	'M', 0, G_OPTION_ARG_INT,	&rtpe_config.port_max,	"Highest port to use for RTP",	"INT"		},
 		{ "redis",	'r', 0, G_OPTION_ARG_STRING,	&redisps,	"Connect to Redis database",	"[PW@]IP:PORT/INT"	},
@@ -383,6 +384,9 @@ static void options(int *argc, char ***argv) {
 	if (rtpe_config.silent_timeout <= 0)
 		rtpe_config.silent_timeout = 3600;
 
+	if (rtpe_config.offer_timeout <= 0)
+		rtpe_config.offer_timeout = 3600;
+
 	if (rtpe_config.final_timeout <= 0)
 		rtpe_config.final_timeout = 0;
 
@@ -447,6 +451,7 @@ void fill_initial_rtpe_cfg(struct rtpengine_config* ini_rtpe_cfg) {
 	ini_rtpe_cfg->max_sessions = rtpe_config.max_sessions;
 	ini_rtpe_cfg->timeout = rtpe_config.timeout;
 	ini_rtpe_cfg->silent_timeout = rtpe_config.silent_timeout;
+	ini_rtpe_cfg->offer_timeout = rtpe_config.offer_timeout;
 	ini_rtpe_cfg->final_timeout = rtpe_config.final_timeout;
 	ini_rtpe_cfg->delete_delay = rtpe_config.delete_delay;
 	ini_rtpe_cfg->redis_expires_secs = rtpe_config.redis_expires_secs;
diff --git a/daemon/main.h b/daemon/main.h
index 50e2f3c89..5f7089f07 100644
--- a/daemon/main.h
+++ b/daemon/main.h
@@ -29,6 +29,7 @@ struct rtpengine_config {
 	int			timeout;
 	int			silent_timeout;
 	int			final_timeout;
+	int			offer_timeout;
 	int			delete_delay;
 	GQueue		        redis_subscribed_keyspaces;
 	int			redis_expires_secs;
diff --git a/daemon/statistics.c b/daemon/statistics.c
index df7909531..8a3745fda 100644
--- a/daemon/statistics.c
+++ b/daemon/statistics.c
@@ -191,6 +191,9 @@ void statistics_update_oneway(struct call* c) {
 			} else if (ml->term_reason==SILENT_TIMEOUT) {
 				atomic64_inc(&rtpe_totalstats.total_silent_timeout_sess);
 				atomic64_inc(&rtpe_totalstats_interval.total_silent_timeout_sess);
+			} else if (ml->term_reason==OFFER_TIMEOUT) {
+				atomic64_inc(&rtpe_totalstats.total_offer_timeout_sess);
+				atomic64_inc(&rtpe_totalstats_interval.total_offer_timeout_sess);
 			} else if (ml->term_reason==REGULAR) {
 				atomic64_inc(&rtpe_totalstats.total_regular_term_sess);
 				atomic64_inc(&rtpe_totalstats_interval.total_regular_term_sess);
diff --git a/daemon/statistics.h b/daemon/statistics.h
index 01c4bfb69..3e25022c2 100644
--- a/daemon/statistics.h
+++ b/daemon/statistics.h
@@ -39,6 +39,7 @@ struct totalstats {
 	atomic64		total_foreign_sessions;
 	atomic64		total_rejected_sess;
 	atomic64		total_silent_timeout_sess;
+	atomic64		total_offer_timeout_sess;
 	atomic64		total_final_timeout_sess;
 	atomic64		total_regular_term_sess;
 	atomic64		total_forced_term_sess;