<div dir="ltr">Hi all.<br><div><br></div><div>I just tried to replace RTPProxy with RTPEngine. I did the change as I was getting one-way audio previously. However, one connection seems inconsistent (One-way audio) sometimes and the other connection does not actually even ring a bell. I have tried with both devices on the same Wi-Fi and one on Wi-Fi and the other on a cellular network. There's no error in opensips or rtpengine logs, so it seems that the routing is incorrect. I am using Opensips 3.0. Please let me know what is incorrect or if further information is needed. Following is my opensips.cfg file:</div><div><br></div><div>Thanks for the help in advance.</div><div><br></div><div>#<br># OpenSIPS residential configuration script<br># Â  Â  by OpenSIPS Solutions <<a href="mailto:team@opensips-solutions.com">team@opensips-solutions.com</a>><br>#<br># This script was generated via "make menuconfig", from<br># Â  the "Residential" scenario.<br># You can enable / disable more features / functionalities by<br># Â  re-generating the scenario with different options.#<br>#<br># Please refer to the Core CookBook at:<br># Â  Â  Â <a href="https://opensips.org/Resources/DocsCookbooks">https://opensips.org/Resources/DocsCookbooks</a><br># for a explanation of possible statements, functions and parameters.<br>#<br><br><br>####### Global Parameters #########<br><br>log_level=3<br>log_stderror=no<br>#log_facility=LOG_LOCAL0<br>log_facility=LOG_LOCAL7<br><br>udp_workers=8<br><br>/* uncomment the following lines to enable debugging */<br>#debug_mode=yes<br><br>/* uncomment the next line to enable the auto temporary blacklisting of <br>  Â not available destinations (default disabled) */<br>#disable_dns_blacklist=no<br><br>/* uncomment the next line to enable IPv6 lookup after IPv4 dns <br>  Â lookup failures (default disabled) */<br>#dns_try_ipv6=yes<br><br>/* comment the next line to enable the auto discovery of local aliases<br>  Â based on reverse DNS on IPs */<br>auto_aliases=no<br><br>advertised_address=<Public_IP><br><br>listen=<udp:Pvt-IP:5060> Â # CUSTOMIZE ME<br>listen=<tcp:Pvt-IP:5060> Â # CUSTOMIZE ME<br><br># Set up listeners<br>#listen=ws:<Pvt-IP:8080><br>#listen=wss:<Pvt-IP:443><br>#listen=tls:<Pvt-IP:5061><br><br><br>####### Modules Section ########<br><br>#set module path<br>mpath="/usr/lib/x86_64-linux-gnu/opensips/modules/"<br><br>#### SIGNALING module<br>loadmodule "signaling.so"<br><br>#### StateLess module<br>loadmodule "sl.so"<br><br>#### Transaction Module<br>loadmodule "tm.so"<br>modparam("tm", "fr_timeout", 5)<br>modparam("tm", "fr_inv_timeout", 30)<br>modparam("tm", "restart_fr_on_each_reply", 0)<br>modparam("tm", "onreply_avp_mode", 1)<br><br>#### Record Route Module<br>loadmodule "rr.so"<br>/* do not append from tag to the RR (no need for this script) */<br>modparam("rr", "append_fromtag", 0)<br><br>#### MAX ForWarD module<br>loadmodule "maxfwd.so"<br><br>#### SIP MSG OPerationS module<br>loadmodule "sipmsgops.so"<br><br>#### FIFO Management Interface<br>loadmodule "mi_fifo.so"<br>modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")<br>modparam("mi_fifo", "fifo_mode", 0666)<br><br>#### MYSQL module<br>loadmodule "db_mysql.so"<br><br>#### HTTPD module<br>loadmodule "httpd.so"<br>modparam("httpd", "port", 8888)<br><br>#### USeR LOCation module<br>loadmodule "usrloc.so"<br>modparam("usrloc", "nat_bflag", "NAT")<br>modparam("usrloc", "db_mode", Â  2)<br>modparam("usrloc", "db_url",<br>  "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME<br><br><br>#### REGISTRAR module<br>loadmodule "registrar.so"<br>modparam("registrar", "tcp_persistent_flag", "TCP_PERSISTENT")<br>modparam("registrar", "received_avp", "$avp(received_nh)")/* uncomment the next line not to allow more than 10 contacts per AOR */<br>#modparam("registrar", "max_contacts", 10)<br><br>#### ACCounting module<br>loadmodule "acc.so"<br>/* what special events should be accounted ? */<br>modparam("acc", "early_media", 0)<br>modparam("acc", "report_cancels", 0)<br>/* by default we do not adjust the direct of the sequential requests.<br>  Â if you enable this parameter, be sure the enable "append_fromtag"<br>  Â in "rr" module */<br>modparam("acc", "detect_direction", 0)<br>modparam("acc", "db_url",<br>   "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME<br><br>#### AUTHentication modules<br>loadmodule "auth.so"<br>loadmodule "auth_db.so"<br>modparam("auth_db", "calculate_ha1", 0)<br>modparam("auth_db", "password_column", "ha1")<br>modparam("auth_db", "db_url",<br>     "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME<br>modparam("auth_db", "load_credentials", "")<br><br>#### ALIAS module<br>loadmodule "alias_db.so"<br>modparam("alias_db", "db_url",<br>    "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME<br><br>#### DOMAIN module<br>loadmodule "domain.so"<br>modparam("domain", "db_url",<br>  "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME<br>modparam("domain", "db_mode", 0) Â  # Use caching<br>modparam("auth_db|usrloc", "use_domain", 1)<br><br>#### PRESENCE modules<br>loadmodule "xcap.so"<br>loadmodule "presence.so"<br>loadmodule "presence_xml.so"<br>modparam("xcap|presence", "db_url",<br>      "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME<br>modparam("presence_xml", "force_active", 1)<br>modparam("presence", "fallback2db", 0)<br><br>#### DIALOG module<br>loadmodule "dialog.so"<br>modparam("dialog", "dlg_match_mode", 1)<br>modparam("dialog", "default_timeout", 21600) Â # 6 hours timeout<br>modparam("dialog", "db_mode", 2)<br>modparam("dialog", "db_url",<br>    "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME<br><br>#### Â NAT modules<br>loadmodule "nathelper.so"<br>modparam("registrar|nathelper", "received_avp", "$avp(rcv)")<br>modparam("nathelper", "natping_interval", 10)<br>modparam("nathelper", "ping_nated_only", 1)<br>modparam("nathelper", "sipping_bflag", "SIP_PING_FLAG")<br>modparam("nathelper", "sipping_from", "<a href="mailto:sip%3Apinger@127.0.0.1">sip:pinger@127.0.0.1</a>") #CUSTOMIZE ME<br>modparam("nathelper", "received_avp", "$avp(received_nh)")<br><br>##loadmodule "rtpproxy.so"<br>#modparam("rtpproxy", "rtpproxy_sock", "udp:localhost:12221") # CUSTOMIZE ME<br><br>loadmodule "rtpengine.so"<br>modparam("rtpengine", "rtpengine_sock", "udp:<Pvt-IP:60000">) # CUSTOMIZE ME<br>#modparam("rtpengine", "rtpengine_sock", "udp:localhost:60000") # CUSTOMIZE ME<br><br><br>#### Â DIALPLAN module<br>loadmodule "dialplan.so"<br>modparam("dialplan", "db_url",<br>    "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME<br><br>#### Â DYNAMMIC ROUTING module<br>loadmodule "drouting.so"<br>modparam("drouting", "db_url",<br>  "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME<br><br>#### Â MI_HTTP module<br>loadmodule "mi_http.so"<br><br>loadmodule "proto_udp.so"<br>loadmodule "proto_tcp.so" <br>#loadmodule "proto_tls.so"<br><br>#### WebSocket and WebSocketSecure protocol<br>#loadmodule "proto_wss.so"<br>#loadmodule "proto_ws.so"<br><br># Certificate management<br># loadmodule "tls_mgm.so" - W<br># modparam("tls_mgm", "tls_method", "[default]SSLv23")<br># modparam("tls_mgm","verify_cert", "1")<br># modparam("tls_mgm","require_cert", "0")<br># modparam("tls_mgm","tls_method", "[Mydomain:5061]TLSv1")<br># modparam("tls_mgm", "server_domain", "Mydomain:5061")<br><br># modparam("tls_mgm", "certificate", "[Mydomain]/etc/opensips/tls/rootCA/cacert.pem")<br># modparam("tls_mgm", "private_key", "[Mydomain]/etc/opensips/tls/rootCA/private/cakey.pem")<br><br>####### Routing Logic ########<br><br># main request routing logic<br><br>route{<br><br>     # initial NAT handling; detect if the request comes from behind a NAT<br> # and apply contact fixing<br>    force_rport();<br>        if (nat_uac_test(23)) {<br>               if (is_method("REGISTER")) {<br>                        fix_nated_register();<br>                 setbflag(NAT);<br>                } else {<br>                      fix_nated_contact();<br>                  setflag(NAT);<br>         }<br>     }<br><br>   if (!mf_process_maxfwd_header(10)) {<br>          send_reply(483,"Too Many Hops");<br>            exit;<br> }<br><br>   if (has_totag()) {<br><br>          # handle hop-by-hop ACK (no routing required)<br>         if ( is_method("ACK") && t_check_trans() ) {<br>                        t_relay();<br>                    exit;<br>         }<br><br>           # sequential request within a dialog should<br>           # take the path determined by record-routing<br>          if ( !loose_route() ) {<br>                       if (is_method("SUBSCRIBE") && is_myself("$rd")) {<br>                         # in-dialog subscribe requests<br>                                route(handle_presence);<br>                               exit;<br>                 }<br>                     # we do record-routing for all our traffic, so we should not<br>                  # receive any sequential requests without Route hdr.<br>                  send_reply(404,"Not here");<br>                 exit;<br>         }<br><br>           # validate the sequential request against dialog<br>              if ( $DLG_status!=NULL && !validate_dialog() ) {<br>                      xlog("In-Dialog $rm from $si (callid=$ci) is not valid according to dialog\n");<br>                     ## exit;<br>              }<br><br>           if (is_method("BYE")) {<br>                     # do accounting even if the transaction fails<br>                 do_accounting("db","failed");<br>                     <br>              }<br><br><br>         if (check_route_param("nat=yes")) <br>                  setflag(NAT);<br>         # route it out to whatever destination was set by loose_route()<br>               # in $du (destination URI).<br>           route(relay);<br>         exit;<br> }<br><br>   # CANCEL processing<br>   if (is_method("CANCEL")) {<br>          if (t_check_trans())<br>                  t_relay();<br>            exit;<br> }<br><br>   # absorb retransmissions, but do not create transaction<br>       t_check_trans();<br><br>    if ( !(is_method("REGISTER") Â || is_from_gw() ) ) {<br>                <br>              if (is_from_local()) {                  <br>                      # authenticate if from local subscriber<br>                       # authenticate all initial non-REGISTER request that pretend to be<br>                    # generated by local subscriber (domain from FROM URI is local)<br>                       if (!proxy_authorize("", "subscriber")) {<br>                         proxy_challenge("", 0);<br>                             exit;<br>                 }<br>                     if ($au!=$fU) {<br>                               send_reply(403,"Forbidden auth ID");<br>                                exit;<br>                 }<br><br>                   consume_credentials();<br>                        # caller authenticated<br>                        <br>              } else {<br>                      # if caller is not local, then called number must be local<br>                    <br>                      if (!is_uri_host_local()) {<br>                           send_reply(403,"Relay Forbidden");<br>                          exit;<br>                 }<br>             }<br><br>   }<br><br>   # preloaded route checking<br>    if (loose_route()) {<br>          xlog("L_ERR",<br>                       "Attempt to route with preloaded Route's [$fu/$tu/$ru/$ci]");<br>           if (!is_method("ACK"))<br>                      send_reply(403,"Preload Route denied");<br>             exit;<br> }<br><br>   # record routing<br>      if (!is_method("REGISTER|MESSAGE"))<br>         record_route();<br><br>     # account only INVITEs<br>        if (is_method("INVITE")) {<br>          <br>              # create dialog with timeout<br>          if ( !create_dialog("B") ) {<br>                        send_reply(500,"Internal Server Error");<br>                    exit;<br>         }<br>             <br>              do_accounting("db");<br>                <br>      }<br><br>   <br>      if (!is_uri_host_local()) {<br>           append_hf("P-hint: outbound\r\n"); <br>         <br>              route(relay);<br> }<br><br>   # requests for my domain<br>      <br>      if( is_method("PUBLISH|SUBSCRIBE"))<br>                 route(handle_presence);<br><br><br># check if the clients are using WebSockets or WebSocketSecure<br># Â  Â  Â  Â  Â  Â  Â  Â if ($proto == "ws" || $proto == "wss")<br># Â  Â  Â  Â  Â  Â  Â  Â setflag(SRC_WS);<br># Â  Â  Â  Â  Â  Â  Â  Â else<br># Â  Â  Â  Â  Â  Â  Â  Â setflag(SRC_SIP);<br># Â  Â  Â  Â  Â  Â  Â  Â }<br><br><br><br>      if (is_method("REGISTER")) {<br>                # authenticate the REGISTER requests<br>#         if (!www_authorize("", "subscriber")) {<br>#                  www_challenge("", 0);<br>#                      exit;<br>#                }<br>             $var(auth_code) = www_authorize("", "subscriber");<br>                if ( $var(auth_code) == -1 || $var(auth_code) == -2 ) {<br>                       xlog("L_NOTICE","Auth error for $fU@$fd from $si cause $var(auth_code)");<br>         }<br>             if ( $var(auth_code) < 0 ) {<br>                       www_challenge("", 0);<br>               exit;<br>}<br>              <br>              if ($au!=$tU) {<br>                       send_reply(403,"Forbidden auth ID");<br>                        exit;<br>         }<br>             if ($proto == "tcp")<br>                        setflag(TCP_PERSISTENT);<br>              if (isflagset(NAT)) {<br>                 setbflag(SIP_PING_FLAG);<br><br># check if the clients are using WebSockets or WebSocketSecure<br>            if ($proto == "ws" || $proto == "wss")<br>            setflag(SRC_WS);<br>              else<br>          setflag(SRC_SIP);<br>             }<br><br>           if (isflagset(SRC_WS))<br>                        setbflag(DST_WS);<br><br>           if (!save("location"))<br>                      sl_reply_error();<br><br>           exit;<br> }<br><br>   if ($rU==NULL) {<br>              # request with no Username in RURI<br>            send_reply(484,"Address Incomplete");<br>               exit;<br> }<br><br><br> <br>      # apply DB based aliases<br>      alias_db_lookup("dbaliases");<br><br>     <br>      # apply transformations from dialplan table<br>   dp_translate( 0, "$rU", $rU);<br><br>     <br>      if ($rU=~"^\+[1-9][0-9]+$") {<br>               <br>              if (!do_routing(0)) {<br>                 send_reply(500,"No PSTN Route found");<br>                      exit;<br>         }<br>             <br>              route(relay);<br>         exit;<br> }<br>      <br><br>   # do lookup with method filtering<br>     if (!lookup("location","m")) {<br>            if (!db_does_uri_exist("$ru","subscriber")) {<br>                     send_reply(420,"Bad Extension");<br>                    exit;<br>         }<br>             <br>              # redirect to a different VM system<br>           $du = "sip:<a href="http://127.0.0.2:5060">127.0.0.2:5060</a>"; # CUSTOMIZE ME<br>                route(relay);<br>         <br>      } <br><br>  if (isbflagset(NAT)) setflag(NAT);<br><br>  # when routing via usrloc, log the missed calls also<br>  do_accounting("db","missed");<br>     <br>      route(relay);<br>}<br><br><br>route[relay] {<br>  # for INVITEs enable some additional helper routes<br>    if (is_method("INVITE")) {<br>          <br>#             if (isflagset(NAT)) { <br>#       if has_body("application/sdp")) {<br>#                  rtpengine_offer("trust-address");<br>#          }<br>             t_on_branch("handle_nat");<br>          t_on_reply("handle_nat");<br>           t_on_failure("missed_call");<br>        }<br>              else if (is_method("BYE|CANCEL")) {<br>                rtpengine_delete();<br>   }<br>#    if (has_body("application/sdp")) {<br># Â  Â  Â  Â  Â  Â if (rtpengine_offer())<br># Â  Â  Â  Â  Â  Â  Â  Â t_on_reply("1");<br># Â  Â  Â  Â } else {<br># Â  Â  Â  Â  Â  Â t_on_reply("2");<br>#    Â }<br># }<br>#    if (is_method("ACK")) && has_body("application/sdp"))<br># Â  Â  Â  Â rtpengine_answer();<br>#  }<br><br>   if (isflagset(NAT)) {<br>         add_rr_param(";nat=yes");<br>   }<br><br>   if (!t_relay()) {<br>             send_reply(500,"Internal Error");<br>   }<br>     exit;<br>}<br><br><br># Presence route<br>route[handle_presence]<br>{<br>     if (!t_newtran()) {<br>           sl_reply_error();<br>             exit;<br> }<br><br>   if(is_method("PUBLISH")) {<br>          handle_publish();<br>     } else<br>        if( is_method("SUBSCRIBE")) {<br>               handle_subscribe();<br>   }<br><br>   exit;<br>}<br><br><br>branch_route[per_branch_ops] {<br>  xlog("new branch at $ru\n");<br>}<br><br>branch_route[handle_nat] {<br><br>     if (!is_method("INVITE") || !has_body("application/sdp"))<br>         return;<br><br>     if (isflagset(SRC_WS) && isbflagset(DST_WS))<br>          $var(rtpengine_flags) = "ICE=force-relay DTLS=passive";<br>     else if (isflagset(SRC_WS) && !isbflagset(DST_WS))<br>            $var(rtpengine_flags) = "RTP/AVP replace-session-connection replace-origin ICE=remove";<br>     else if (!isflagset(SRC_WS) && isbflagset(DST_WS))<br>            $var(rtpengine_flags) = "UDP/TLS/RTP/SAVPF ICE=force";<br>      else if (!isflagset(SRC_WS) && !isbflagset(DST_WS))<br>           $var(rtpengine_flags) = "RTP/AVP replace-session-connection replace-origin ICE=remove";<br><br>   rtpengine_offer("$var(rtpengine_flags)");<br>}<br><br>#onreply_route[handle_nat] {<br>#       if (nat_uac_test(1))<br>#         fix_nated_contact();<br># if ( isflagset(NAT) )<br>#                rtpproxy_answer("ro");<br>#onreply_route[handle_nat] {<br># Â  Â  Â  Â if (nat_uac_test(1))<br># Â  Â  Â  Â  Â  Â  Â  Â fix_nated_contact();<br># Â  Â  Â  Â if ( isflagset(NAT) )<br># Â  Â  Â  Â  Â  Â  Â  Â rtpengine_answer("trust-address");<br>#  if (has_body("application/sdp"))<br># Â  Â  Â  Â rtpengine_answer();<br># xlog("incoming reply\n");<br>#}<br><br>onreply_route[handle_nat] {<br><br>      fix_nated_contact();<br>  if (!has_body("application/sdp"))<br>           return;<br><br>     if (isflagset(SRC_WS) && isbflagset(DST_WS))<br>          $var(rtpengine_flags) = "ICE=force-relay DTLS=passive";<br>     else if (isflagset(SRC_WS) && !isbflagset(DST_WS))<br>            $var(rtpengine_flags) = "UDP/TLS/RTP/SAVPF ICE=force";<br>      else if (!isflagset(SRC_WS) && isbflagset(DST_WS))<br>            $var(rtpengine_flags) = "RTP/AVP replace-session-connection replace-origin ICE=remove";<br>     else if (!isflagset(SRC_WS) && !isbflagset(DST_WS))<br>           $var(rtpengine_flags) = "RTP/AVP replace-session-connection replace-origin ICE=remove";<br><br>   rtpengine_answer("$var(rtpengine_flags)");<br>}<br><br>failure_route[missed_call] {<br>       if (t_was_cancelled()) {<br>              exit;<br> }<br><br>   # uncomment the following lines if you want to block client <br>  # redirect based on 3xx replies.<br>      ##if (t_check_status("3[0-9][0-9]")) {<br>      ##t_reply(404,"Not found");<br> ##      exit;<br> ##}<br><br> <br>      # redirect the failed to a different VM system<br>        if (t_check_status("486|408")) {<br>            $du = "sip:<a href="http://127.0.0.2:5060">127.0.0.2:5060</a>"; # CUSTOMIZE ME<br>                # do not set the missed call flag again<br>               route(relay);<br> }<br>}<br><br><br><br>local_route {<br>     if (is_method("BYE") && $DLG_dir=="UPSTREAM") {<br>           <br>              acc_db_request("200 Dialog Timeout", "acc");<br>              <br>      }<br>}<br></div></div>