Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 386047)
+++ channels/chan_sip.c	(working copy)
@@ -20951,10 +20951,10 @@
 		}
 
 		/* Check for Session-Timers related headers */
-		if (st_get_mode(p, 0) != SESSION_TIMER_MODE_REFUSE && p->outgoing_call == TRUE && !reinvite) {
+		if (st_get_mode(p, 0) != SESSION_TIMER_MODE_REFUSE) {
 			p_hdrval = (char*)get_header(req, "Session-Expires");
 			if (!ast_strlen_zero(p_hdrval)) {
-				/* UAS supports Session-Timers */
+				/* UAC/S supports Session-Timers */
 				enum st_refresher_param st_ref_param;
 				int tmp_st_interval = 0;
 				rtn = parse_session_expires(p_hdrval, &tmp_st_interval, &st_ref_param);
@@ -20978,7 +20978,7 @@
 				p->stimer->st_active_peer_ua = TRUE;
 				start_session_timer(p);
 			} else {
-				/* UAS doesn't support Session-Timers */
+				/* UAC/S doesn't support Session-Timers */
 				if (st_get_mode(p, 0) == SESSION_TIMER_MODE_ORIGINATE) {
 					p->stimer->st_ref = SESSION_TIMER_REFRESHER_US;
 					p->stimer->st_active_peer_ua = FALSE;