Index: main/channel.c
===================================================================
--- main/channel.c	(revision 94396)
+++ main/channel.c	(working copy)
@@ -4827,3 +4827,21 @@
         snprintf(buf, sizeof(buf), "%d", num);
         return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd);
 }
+
+static t38_request_func_t ast_t38_request_func = NULL;
+
+void ast_reset_t38_handler()
+{
+	ast_t38_request_func = NULL;
+}
+
+void ast_set_t38_handler(t38_request_func_t t38_request_func)
+{
+	ast_t38_request_func = t38_request_func;
+}
+
+void ast_request_t38(struct ast_channel *chan)
+{
+	if (ast_t38_request_func)
+		ast_t38_request_func(chan);
+}
Index: include/asterisk/channel.h
===================================================================
--- include/asterisk/channel.h	(revision 94396)
+++ include/asterisk/channel.h	(working copy)
@@ -1125,6 +1125,13 @@
 struct ast_channel *ast_walk_channel_by_exten_locked(const struct ast_channel *chan, const char *exten,
 						     const char *context);
 
+
+typedef int (*t38_request_func_t)(const struct ast_channel *chan);
+
+void ast_reset_t38_handler(void);
+void ast_set_t38_handler(t38_request_func_t t38_request_func);
+void ast_request_t38(struct ast_channel *chan);
+
 /*! ! \brief Waits for a digit
  * \param c channel to wait for a digit on
  * \param ms how many milliseconds to wait
Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 94396)
+++ channels/chan_sip.c	(working copy)
@@ -19463,6 +19463,22 @@
 	AST_CLI_DEFINE(sip_reload, "Reload SIP configuration"),
 };
 
+static int t38_request_handler(const struct ast_channel *chan)
+{
+	struct sip_pvt *p;
+	if (strcmp(chan->tech->type, "SIP")) {
+		ast_log(LOG_WARNING, "t38_request_handler on non-SIP channel\n");
+		return -1;
+	}
+
+	p = (struct sip_pvt *) chan->tech_pvt;
+
+	p->t38.state = T38_LOCAL_REINVITE;
+	transmit_reinvite_with_sdp(p, TRUE);
+
+	return 0;
+}
+
 /*! \brief PBX load module - initialization */
 static int load_module(void)
 {
@@ -19534,6 +19550,8 @@
 	/* And start the monitor for the first time */
 	restart_monitor();
 
+	ast_set_t38_handler(t38_request_handler);
+
 	return AST_MODULE_LOAD_SUCCESS;
 }
 
@@ -19542,6 +19560,8 @@
 {
 	struct sip_pvt *p, *pl;
 	struct ast_context *con;
+
+	ast_reset_t38_handler();
 	
 	/* First, take us out of the channel type list */
 	ast_channel_unregister(&sip_tech);