diff --git a/libs/freetdm/Makefile.am b/libs/freetdm/Makefile.am
index 2ab5c29e18..96f1c9a10f 100644
--- a/libs/freetdm/Makefile.am
+++ b/libs/freetdm/Makefile.am
@@ -94,6 +94,7 @@ library_include_HEADERS = \
 	$(SRC)/include/ftdm_declare.h \
 	$(SRC)/include/ftdm_threadmutex.h \
 	$(SRC)/include/ftdm_os.h \
+	$(SRC)/include/ftdm_call_utils.h \
 	$(SRC)/include/ftdm_dso.h 
 
 lib_LTLIBRARIES	       = libfreetdm.la
diff --git a/libs/freetdm/src/ftmod/ftmod_r2/ftmod_r2.c b/libs/freetdm/src/ftmod/ftmod_r2/ftmod_r2.c
index 6e2b292ce7..0217a5172a 100644
--- a/libs/freetdm/src/ftmod/ftmod_r2/ftmod_r2.c
+++ b/libs/freetdm/src/ftmod/ftmod_r2/ftmod_r2.c
@@ -295,7 +295,7 @@ static ftdm_call_cause_t ftdm_r2_cause_to_ftdm_cause(ftdm_channel_t *fchan, open
 	case OR2_CAUSE_GLARE:
 		return FTDM_CAUSE_REQUESTED_CHAN_UNAVAIL;
 	}
-	ftdm_log_chan(fchan, FTDM_LOG_WARNING, "Mapping openr2 cause %d to unspecified\n", cause);
+	ftdm_log_chan(fchan, FTDM_LOG_NOTICE, "Mapping openr2 cause %d to unspecified\n", cause);
 	return FTDM_CAUSE_NORMAL_UNSPECIFIED;
 }
 
diff --git a/libs/freetdm/src/ftmod/ftmod_wanpipe/ftmod_wanpipe.c b/libs/freetdm/src/ftmod/ftmod_wanpipe/ftmod_wanpipe.c
index e2b08255ac..3b384cdf32 100644
--- a/libs/freetdm/src/ftmod/ftmod_wanpipe/ftmod_wanpipe.c
+++ b/libs/freetdm/src/ftmod/ftmod_wanpipe/ftmod_wanpipe.c
@@ -239,7 +239,11 @@ static unsigned wp_open_range(ftdm_span_t *span, unsigned spanno, unsigned start
 			ftdm_log(FTDM_LOG_ERROR, "span %d channel %d cannot be configured as smg_prid_nfas, you need to compile freetdm with newer libsangoma\n", spanno, x);
 #endif
 		} else {
+#ifdef LIBSANGOMA_VERSION
+			sockfd = __tdmv_api_open_span_chan(spanno, x);
+#else
 			sockfd = tdmv_api_open_span_chan(spanno, x);
+#endif
 		}
 
 		if (sockfd == FTDM_INVALID_SOCKET) {
diff --git a/libs/freetdm/src/include/freetdm.h b/libs/freetdm/src/include/freetdm.h
index 8d67df3edc..aed40541a3 100644
--- a/libs/freetdm/src/include/freetdm.h
+++ b/libs/freetdm/src/include/freetdm.h
@@ -430,7 +430,7 @@ typedef enum {
 } ftdm_signal_event_t;
 #define SIGNAL_STRINGS "START", "STOP", "RELEASED", "UP", "FLASH", "PROCEED", "RINGING", "PROGRESS", \
 		"PROGRESS_MEDIA", "ALARM_TRAP", "ALARM_CLEAR", \
-		"COLLECTED_DIGIT", "ADD_CALL", "RESTART", "SIGSTATUS_CHANGED", "COLLISION", "FACILITY", \
+		"COLLECTED_DIGIT", "ADD_CALL", "RESTART", "SIGSTATUS_CHANGED", "FACILITY", \
 		"TRACE", "TRACE_RAW", "INDICATION_COMPLETED", "DIALING", "INVALID"
 /*! \brief Move from string to ftdm_signal_event_t and viceversa */
 FTDM_STR2ENUM_P(ftdm_str2ftdm_signal_event, ftdm_signal_event2str, ftdm_signal_event_t)
diff --git a/libs/freetdm/src/include/private/ftdm_core.h b/libs/freetdm/src/include/private/ftdm_core.h
index fbe42d33da..7cf0934f57 100644
--- a/libs/freetdm/src/include/private/ftdm_core.h
+++ b/libs/freetdm/src/include/private/ftdm_core.h
@@ -132,8 +132,8 @@ extern "C" {
 
 
 #define ftdm_channel_test_feature(obj, flag) ((obj)->features & flag)
-#define ftdm_channel_set_feature(obj, flag) (obj)->features |= (flag)
-#define ftdm_channel_clear_feature(obj, flag) (obj)->features &= ~(flag)
+#define ftdm_channel_set_feature(obj, flag) (obj)->features = (ftdm_channel_feature_t)((obj)->features | flag)
+#define ftdm_channel_clear_feature(obj, flag) (obj)->features = (ftdm_channel_feature_t)((obj)->features & ( ~(flag) ))
 #define ftdm_channel_set_member_locked(obj, _m, _v) ftdm_mutex_lock(obj->mutex); obj->_m = _v; ftdm_mutex_unlock(obj->mutex)
 
 /*!