diff --git a/net/asterisk16/files/patch-chan_sip.c.rt200ne b/net/asterisk16/files/patch-chan_sip.c.rt200ne
new file mode 100644
index 0000000..e4be43d
--- /dev/null
+++ b/net/asterisk16/files/patch-chan_sip.c.rt200ne
@@ -0,0 +1,158 @@
+*** channels/chan_sip.c.orig	2008-12-03 23:13:27.000000000 +0900
+--- channels/chan_sip.c	2009-02-04 15:38:57.000000000 +0900
+***************
+*** 241,246 ****
+--- 241,249 ----
+  
+  #define INITIAL_CSEQ                 101              /*!< our initial sip sequence number */
+  
++ /* RT-200NE HACK */
++ #define MAX_RT200NE		     4		     /* Number of RT-200NEs */
++ 
+  #define DEFAULT_MAX_SE               1800             /*!< Session-Timer Default Session-Expires period (RFC 4028) */
+  #define DEFAULT_MIN_SE               90               /*!< Session-Timer Default Min-SE period (RFC 4028) */
+  
+***************
+*** 739,744 ****
+--- 742,751 ----
+  static struct ast_ha *global_contact_ha = NULL;
+  static int global_dynamic_exclude_static = 0;
+  
++ /* RT-200NE HACK */
++ static char global_rt200ne[MAX_RT200NE][20];
++ static int  global_rt200ne_cnt = 0;
++ 
+  /*! \name Object counters @{
+   * \bug These counters are not handled in a thread-safe way ast_atomic_fetchadd_int()
+   * should be used to modify these values. */
+***************
+*** 1893,1898 ****
+--- 1900,1906 ----
+  static char *sip_show_registry(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
+  static char *sip_unregister(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
+  static char *sip_show_settings(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
++ static char *sip_show_rt200ne(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
+  static const char *subscription_type2str(enum subscriptiontype subtype) attribute_pure;
+  static const struct cfsubscription_types *find_subscription_type(enum subscriptiontype subtype);
+  static char *complete_sip_peer(const char *word, int state, int flags2);
+***************
+*** 13325,13330 ****
+--- 13333,13368 ----
+  	return CLI_SUCCESS;
+  }
+  
++ /*! \brief Show registered RT-200NEs */
++ static char *sip_show_rt200ne(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
++ {
++       int     tmp_i;
++ 
++ 	switch (cmd) {
++         case CLI_INIT:
++                 e->command = "sip show rt200ne";
++                 e->usage =
++                         "Usage: sip show rt200ne\n"
++                         "       List RT-200NE(s) settings.\n";
++                 return NULL;
++         case CLI_GENERATE:
++                 return NULL;
++         }
++ 
++       if (a->argc != 3)
++               return CLI_SHOWUSAGE;
++       if (global_rt200ne_cnt == 0){
++               ast_cli(a->fd,"No RT-200NE(s)\n");
++       } else {
++               ast_cli(a->fd,"RT-200NE at ..\n");
++               for (tmp_i=0;tmp_i<global_rt200ne_cnt;tmp_i++){
++                       ast_cli(a->fd, "- %-16.16s\n", global_rt200ne[tmp_i]);
++               }
++       }
++ 
++       return CLI_SUCCESS;
++ }
++ 
+  /*! \brief Show subscription type in string format */
+  static const char *subscription_type2str(enum subscriptiontype subtype)
+  {
+***************
+*** 14336,14341 ****
+--- 14374,14384 ----
+  	const char *md5secret;
+  	struct sip_auth *auth = NULL;	/* Realm authentication */
+  
++ 	/* RT-200NE HACK */
++ 	char tmp_addr[20];
++ 	char tmp_uri[256];
++ 	int tmp_i;
++ 
+  	if (!ast_strlen_zero(p->domain))
+  		ast_copy_string(uri, p->domain, sizeof(uri));
+  	else if (!ast_strlen_zero(p->uri))
+***************
+*** 14343,14348 ****
+--- 14386,14413 ----
+  	else
+  		snprintf(uri, sizeof(uri), "sip:%s@%s", p->username, ast_inet_ntoa(p->sa.sin_addr));
+  
++ 	/* RT-200NE HACK */
++ 	strcpy(tmp_addr, ast_inet_ntoa(p->sa.sin_addr));
++ 	/* ast_verbose(VERBOSE_PREFIX_3 "inet is  %s \n", tmp_addr); */
++ 	for (tmp_i=0;tmp_i<global_rt200ne_cnt;tmp_i++){
++ 		if(strcmp(tmp_addr, global_rt200ne[tmp_i]) == 0){
++ 			/* ast_verbose(VERBOSE_PREFIX_3 "Peer is RT-200NE\n"); */
++ 			if (strcmp(uri, "domain") == 0) {
++ 				strncpy(tmp_uri, p->uri, sizeof(tmp_uri));
++ 				switch (method) {
++ 				case    SIP_REGISTER:
++ 					sprintf(uri, "sip:%s",tmp_addr);
++ 					break;
++ 				default:
++ 					*strchr(tmp_uri, '@') = '\0';
++ 					snprintf(uri, sizeof(uri), "%s@%s",tmp_uri,tmp_addr);
++ 					break;
++ 				}
++ 			}
++ 		}
++ 	}
++ 	/* RT-200NE HACK END */
++ 
+  	snprintf(cnonce, sizeof(cnonce), "%08lx", ast_random());
+  
+   	/* Check if we have separate auth credentials */
+***************
+*** 21050,21055 ****
+--- 21115,21124 ----
+  
+  	global_matchexterniplocally = FALSE;
+  
++ 	/* RT-200NE HACK */
++ 	memset(global_rt200ne, 0, sizeof(global_rt200ne));
++ 	global_rt200ne_cnt = 0;
++ 
+  	/* Copy the default jb config over global_jbconf */
+  	memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));
+  
+***************
+*** 21390,21395 ****
+--- 21459,21469 ----
+  				default_maxcallbitrate = DEFAULT_MAX_CALL_BITRATE;
+  		} else if (!strcasecmp(v->name, "matchexterniplocally")) {
+  			global_matchexterniplocally = ast_true(v->value);
++ 		} else if (!strcasecmp(v->name, "rt200ne")) { /*RT-200NE HACK*/
++ 			if (global_rt200ne_cnt < MAX_RT200NE) {
++ 				ast_copy_string(global_rt200ne[global_rt200ne_cnt], v->value, sizeof(global_rt200ne));
++ 				global_rt200ne_cnt++;
++ 			}
+  		} else if (!strcasecmp(v->name, "session-timers")) {
+  			int i = (int) str2stmode(v->value); 
+  			if (i < 0) {
+***************
+*** 22201,22206 ****
+--- 22275,22281 ----
+  	AST_CLI_DEFINE(sip_show_registry, "List SIP registration status"),
+  	AST_CLI_DEFINE(sip_unregister, "Unregister (force expiration) a SIP peer from the registry"),
+  	AST_CLI_DEFINE(sip_show_settings, "Show SIP global settings"),
++ 	AST_CLI_DEFINE(sip_show_rt200ne, "Show RT-200NE settings"),
+  	AST_CLI_DEFINE(sip_notify, "Send a notify packet to a SIP peer"),
+  	AST_CLI_DEFINE(sip_show_channel, "Show detailed SIP channel info"),
+  	AST_CLI_DEFINE(sip_show_history, "Show SIP dialog history"),