FS-3252 try latest patch with new option to set sip_execute_on_image to…

FS-3252 try latest patch with new option to set sip_execute_on_image to 't38_gateway self nocng' this should skip the tone detection adn go right into the gateway mode so you should be able to do only this and have it work based on remote re-invite

src/mod/applications/mod_spandsp/mod_spandsp.c

@@ -80,23 +80,34 @@ SWITCH_STANDARD_APP(t38_gateway_function)
     switch_channel_t *channel = switch_core_session_get_channel(session);
     time_t timeout = switch_epoch_time_now(NULL) + 20;
     const char *var;
+    int argc = 0;
+    char *argv[2] = { 0 };
+    char *dupdata;
+    const char *direction = argv[0], *flags = argv[1];
+    
+    dupdata = switch_core_session_strdup(session, data);
+    argc = switch_split(dupdata, ' ', argv);
 
-    if (zstr(data) || strcasecmp(data, "self")) {
-        data = "peer";
+    if (zstr(direction) || strcasecmp(direction, "self")) {
+        direction = "peer";
     }
+    
+    switch_channel_set_variable(channel, "t38_leg", direction);
 
-    switch_channel_set_variable(channel, "t38_leg", data);
-
-    if ((var = switch_channel_get_variable(channel, "t38_gateway_detect_timeout"))) {
-        long to = atol(var);
-        if (to > -1) {
-            timeout = (time_t) (switch_epoch_time_now(NULL) + to);
-        } else {
-            switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "%s invalid timeout value.\n", switch_channel_get_name(channel));
+    if (!zstr(flags) && !strcasecmp(flags, "nocng")) {
+        t38_gateway_start(session, direction, NULL);
+    } else {
+        if ((var = switch_channel_get_variable(channel, "t38_gateway_detect_timeout"))) {
+            long to = atol(var);
+            if (to > -1) {
+                timeout = (time_t) (switch_epoch_time_now(NULL) + to);
+            } else {
+                switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "%s invalid timeout value.\n", switch_channel_get_name(channel));
+            }
         }
+
+        switch_ivr_tone_detect_session(session, "t38", "1100.0", "rw", timeout, 1, direction, NULL, t38_gateway_start);        
     }
-    
-	switch_ivr_tone_detect_session(session, "t38", "1100.0", "rw", timeout, 1, data, NULL, t38_gateway_start);
 }
 
 /**