--- /etc/kamailio/kamailio.cfg	2018-12-13 20:25:12.117585656 +0200
+++ /tmp/kamailio.cfg	2018-12-13 20:41:22.000000000 +0200
@@ -2,6 +2,7 @@
 #!define WITH_MYSQL
 #!define WITH_AUTH
 #!define WITH_USRLOCDB
+#!define WITH_ASTERISK
 #
 # Kamailio (OpenSER) SIP Server v5.2 - default configuration script
 #     - web: https://www.kamailio.org
@@ -122,8 +123,9 @@
 #!ifdef WITH_MYSQL
 # - database URL - used to connect to database server by modules such
 #       as: auth_db, acc, usrloc, a.s.o.
-#!ifndef DBURL
-#!define DBURL "mysql://kamailio:kamailiorw@localhost/kamailio"
+#!define DBURL "mysql://openser:openserrw@localhost/openser"
+#!ifdef WITH_ASTERISK
+#!define DBASTURL "mysql://asterisk:asterisk_password@localhost/asterisk"
 #!endif
 #!endif
 #!ifdef WITH_MULTIDOMAIN
@@ -176,7 +178,7 @@
 
 /* uncomment and configure the following line if you want Kamailio to
  * bind on a specific interface/port/proto (default bind on all available) */
-# listen=udp:10.0.0.10:5060
+ listen=udp:192.168.1.230:5060
 
 #!ifdef WITH_TLS
 enable_tls=yes
@@ -213,6 +215,15 @@
 voicemail.srv_port = "5060" desc "VoiceMail Port"
 #!endif
 
+
+#!ifdef WITH_ASTERISK
+asterisk.bindip = "192.168.1.230" desc "Asterisk IP Address"
+asterisk.bindport = "5080" desc "Asterisk Port"
+kamailio.bindip = "192.168.178.230" desc "Kamailio IP Address"
+kamailio.bindport = "5060" desc "Kamailio Port"
+#!endif
+
+
 ####### Modules Section ########
 
 /* set paths to location of modules */
@@ -316,7 +327,16 @@
 modparam("rr", "enable_full_lr", 0)
 # do not append from tag to the RR (no need for this script)
 modparam("rr", "append_fromtag", 0)
-
+#!ifdef WITH_ASTERISK
+modparam("rr", "append_fromtag", 1)
+#!else
+modparam("rr", "append_fromtag", 0)
+#!endif
+#!ifdef WITH_ASTERISK
+modparam("rr", "append_fromtag", 1)
+#!else
+modparam("rr", "append_fromtag", 0)
+#!endif
 # ----- registrar params -----
 modparam("registrar", "method_filtering", 1)
 /* uncomment the next line to disable parallel forking via location */
@@ -369,6 +389,17 @@
 modparam("auth_db", "password_column", "password")
 modparam("auth_db", "load_credentials", "")
 modparam("auth_db", "use_domain", MULTIDOMAIN)
+#!ifdef WITH_ASTERISK
+modparam("auth_db", "user_column", "name")
+modparam("auth_db", "password_column", "sippasswd")
+modparam("auth_db", "db_url", DBASTURL)
+modparam("auth_db", "version_table", 0)
+#!else
+modparam("auth_db", "db_url", DBURL)
+modparam("auth_db", "password_column", "password")
+modparam("auth_db", "use_domain", MULTIDOMAIN)
+#!endif
+
 
 # ----- permissions params -----
 #!ifdef WITH_IPAUTH
@@ -643,6 +674,9 @@
 	if (!save("location")) {
 		sl_reply_error();
 	}
+#!ifdef WITH_ASTERISK
+  route(REGFWD);
+#!endif
 	exit;
 }
 
@@ -664,6 +698,15 @@
 		route(SIPOUT);
 	}
 #!endif
+#!ifdef WITH_ASTERISK
+ if(is_method("INVITE") && (!route(FROMASTERISK))) {
+  # if new call from out there - send to Asterisk
+  # - non-INVITE request are routed directly by Kamailio
+  # - traffic from Asterisk is routed also directy by Kamailio
+  route(TOASTERISK);
+  exit;
+ }
+#!endif
 
 	$avp(oexten) = $rU;
 	if (!lookup("location")) {
@@ -728,6 +771,11 @@
 # IP authorization and user authentication
 route[AUTH] {
 #!ifdef WITH_AUTH
+#!ifdef WITH_ASTERISK
+ # do not auth traffic from Asterisk - trusted!
+ if(route(FROMASTERISK))
+  return;
+#!endif
 
 #!ifdef WITH_IPAUTH
 	if((!is_method("REGISTER")) && allow_source_address()) {
@@ -760,6 +808,18 @@
 		sl_send_reply("403","Not relaying");
 		exit;
 	}
+#!ifdef WITH_ASTERISK
+  if (!auth_check("$fd", "sipusers", "1")) {
+#!else
+  if (!auth_check("$fd", "subscriber", "1")) {
+#!endif
+   auth_challenge("$fd", "0");
+   exit;
+  }
+  # user authenticated - remove auth header
+  if(!is_method("REGISTER|PUBLISH"))
+   consume_credentials();
+ }
 
 #!endif
 	return;
@@ -971,3 +1031,40 @@
 	}
 #!endif
 }
+#!ifdef WITH_ASTERISK
+# Test if coming from Asterisk
+route[FROMASTERISK] {
+ if($si==$sel(cfg_get.asterisk.bindip)
+   && $sp==$sel(cfg_get.asterisk.bindport))
+  return 1;
+ return -1;
+}
+ 
+# Send to Asterisk
+route[TOASTERISK] {
+ $du = "sip:" + $sel(cfg_get.asterisk.bindip) + ":"
+   + $sel(cfg_get.asterisk.bindport);
+ route(RELAY);
+ exit;
+}
+ 
+# Forward REGISTER to Asterisk
+route[REGFWD] {
+ if(!is_method("REGISTER"))
+ {
+  return;
+ }
+ $var(rip) = $sel(cfg_get.asterisk.bindip);
+ $uac_req(method)="REGISTER";
+ $uac_req(ruri)="sip:" + $var(rip) + ":" + $sel(cfg_get.asterisk.bindport);
+ $uac_req(furi)="sip:" + $au + "@" + $var(rip);
+ $uac_req(turi)="sip:" + $au + "@" + $var(rip);
+ $uac_req(hdrs)="Contact: <sip: au="" cfg_get.kamailio.bindip="" cfg_get.kamailio.bindport="" sel="">\r\n";
+ if($sel(contact.expires) != $null)
+  $uac_req(hdrs)= $uac_req(hdrs) + "Expires: " + $sel(contact.expires) + "\r\n";
+ else
+  $uac_req(hdrs)= $uac_req(hdrs) + "Expires: " + $hdr(Expires) + "\r\n";
+ uac_req_send();
+}
+#!endif
+