FS-6054 --resolve

src/mod/endpoints/mod_sofia/sofia_glue.c

@@ -4432,6 +4432,7 @@ int sofia_glue_toggle_hold(private_object_t *tech_pvt, int sendonly)
 		sofia_clear_flag_locked(tech_pvt, TFLAG_HOLD_LOCK);
 
 		if (sofia_test_flag(tech_pvt, TFLAG_SIP_HOLD)) {
+			const char *val;
 
 			switch_yield(250000);
 
@@ -4452,6 +4453,12 @@ int sofia_glue_toggle_hold(private_object_t *tech_pvt, int sendonly)
 				}
 			}
 
+			if (!sofia_test_pflag(tech_pvt->profile, PFLAG_DISABLE_RTP_AUTOADJ) && !switch_channel_test_flag(tech_pvt->channel, CF_PROXY_MODE) &&
+				!((val = switch_channel_get_variable(tech_pvt->channel, "disable_rtp_auto_adjust")) && switch_true(val))) {
+				/* Reactivate the NAT buster flag. */
+				switch_rtp_set_flag(tech_pvt->video_rtp_session, SWITCH_RTP_FLAG_AUTOADJ);
+			}
+
 			sofia_clear_flag_locked(tech_pvt, TFLAG_SIP_HOLD);
 			switch_channel_mark_hold(tech_pvt->channel, SWITCH_FALSE);
 			switch_channel_presence(tech_pvt->channel, "unknown", "unhold", NULL);