Re: [Serusers] PSTN

Hi List I am still unable to solve this issue why the my NAT user is unable to hear when he makes a PSTn call.. # ----------- global configuration parameters ------------------------ debug=8 # debug level (cmd line: -dddddddddd) fork=yes log_stderror=yes # (cmd line: -E) check_via=no # (cmd. line: -v) dns=no # (cmd. line: -r) rev_dns=no # (cmd. line: -R) port=5060 children=4 fifo="/tmp/ser_fifo" # ------------------ module loading ---------------------------------- # Uncomment this if you want to use SQL database loadmodule "/usr/local/lib/ser/modules/mysql.so" loadmodule "/usr/local/lib/ser/modules/sl.so" loadmodule "/usr/local/lib/ser/modules/tm.so" loadmodule "/usr/local/lib/ser/modules/rr.so" loadmodule "/usr/local/lib/ser/modules/maxfwd.so" loadmodule "/usr/local/lib/ser/modules/usrloc.so" loadmodule "/usr/local/lib/ser/modules/registrar.so" loadmodule "/usr/local/lib/ser/modules/textops.so" # Uncomment this if you want digest authentication # mysql.so must be loaded ! loadmodule "/usr/local/lib/ser/modules/auth.so" loadmodule "/usr/local/lib/ser/modules/auth_db.so" # !! Nathelper loadmodule "/usr/local/lib/ser/modules/nathelper.so" # !! Accounting loadmodule "/usr/local/lib/ser/modules/acc.so" # ----------------- setting module-specific parameters --------------- # -- usrloc params -- #modparam("usrloc", "db_mode", 0) # Uncomment this if you want to use SQL database # for persistent storage and comment the previous line modparam("usrloc", "db_mode", 2) # -- auth params -- # Uncomment if you are using auth module # modparam("auth_db", "calculate_ha1", yes) # # If you set "calculate_ha1" parameter to yes (which true in this

# uncomment also the following parameter) # modparam("auth_db", "password_column", "password") # -- rr params -- # add value to ;lr param to make some broken UAs happy modparam("rr", "enable_full_lr", 1) # !! Nathelper # -- nathelper params -- modparam("registrar", "nat_flag", 6) modparam("nathelper", "natping_interval", 30) # Ping interval 30 s modparam("nathelper", "ping_nated_only", 1) # Ping only clients behind NAT # !! Accounting # -- acc params -- # set the reporting log level modparam("acc", "log_level", 2) # Set log_level to 2 # number of flag, which will be used for accounting; if a message is # labeled with this flag, its completion status will be reported modparam("acc", "log_flag", 1 ) modparam("acc", "log_missed_flag", 2) modparam("acc", "failed_transactions", 1) modparam("acc", "report_cancels", 1) modparam("acc", "db_url", "mysql://ser:heslo@localhost/ser") modparam("acc", "db_flag", 1) modparam("acc", "db_missed_flag", 2) # ------------------------- request routing logic ------------------- # main routing logic route{ # initial sanity checks -- messages with # max_forwards==0, or excessively long requests if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); break; }; if (msg:len >= max_len ) { sl_send_reply("513", "Message too big"); break; }; # !! Nathelper # Special handling for NATed clients; first, NAT test is # executed: it looks for via!=received and RFC1918 addresses # in Contact (may fail if line-folding is used); also, # the received test should, if completed, should check all # vias for rpesence of received if (nat_uac_test("3")) { # Allow RR-ed requests, as these may indicate that # a NAT-enabled proxy takes care of it; unless it is # a REGISTER if (method == "REGISTER" || ! search("^Record-Route:")) { log("LOG: Someone trying to register from private IP,

# This will work only for user agents that support symmetric # communication. We tested quite many of them and majority is # smart enough to be symmetric. In some phones it takes a configuration # option. With Cisco 7960, it is called NAT_Enable=Yes, with

it is # called "symmetric media" and "symmetric signalling". fix_nated_contact(); # Rewrite contact with source IP of

if (method == "INVITE") { fix_nated_sdp("1"); # Add direction=active to SDP }; force_rport(); # Add rport parameter to topmost Via setflag(6); # Mark as NATed }; }; # labeled all transaction for accounting setflag(1); setflag(2); # we record-route all messages -- to make sure that # subsequent messages will go through our proxy; that's # particularly good if upstream and downstream entities # use different transport protocol if (!method=="REGISTER") record_route(); # subsequent messages withing a dialog should take the # path determined by record-routing if (loose_route()) { # mark routing logic in request append_hf("P-hint: rr-enforced\r\n"); route(1); break; }; if (!uri==myself) { # mark routing logic in request append_hf("P-hint: outbound\r\n"); route(1); break; }; # if the request is for other domain use UsrLoc # (in case, it does not work, use the following command # with proper names and addresses in it) if (uri==myself) { if (method=="REGISTER") { # Uncomment this if you want to use digest authentication if (!www_authorize("1.1.1.1","subscriber")) { www_challenge("1.1.1.1", "0"); break; }; save("location"); break; }; if(uri=~"^sip:00*"){ append_hf("P-hint: PSTN call\r\n"); route(1); break; }; lookup("aliases"); if (!uri==myself) { append_hf("P-hint: outbound alias\r\n"); route(1); break; }; # native SIP destinations are handled using our USRLOC DB if (!lookup("location")) { sl_send_reply("404", "Not Found"); break; }; }; append_hf("P-hint: usrloc applied\r\n"); route(1); } route[1] { # !! Nathelper if (uri=~"[@:](192\.168\.|10\.|172\.(1[6-9]|2[0-9]|3[0-1])\.)" && !search("^Route:")){ sl_send_reply("479", "We don't forward to private IP addresses"); break; }; # if client or server know to be behind a NAT, enable relay if (isflagset(6)) { force_rtp_proxy(); }; if(uri=~"^sip:00*"){ rewritehost("2.2.2.2"); t_relay_to_udp("2.2.2.2","5060"); break; }; # NAT processing of replies; apply to all transactions (for example, # re-INVITEs from public to private UA are hard to identify as # NATed at the moment of request processing); look at replies t_on_reply("1"); # send it out now; use stateful forwarding as it works reliably # even for UDP2TCP if (!t_relay()) { sl_reply_error(); }; } # !! Nathelper onreply_route[1] { # NATed transaction ? if (isflagset(6) && status =~ "(183)|2[0-9][0-9]") { fix_nated_contact(); force_rtp_proxy(); # otherwise, is it a transaction behind a NAT and we did not # know at time of request processing ? (RFC1918 contacts) } else if (nat_uac_test("1")) { fix_nated_contact(); }; } >From: "Kapil Dhawan" <sersavvy(a)hotmail.com> >To: sersavvy(a)hotmail.com >CC: serusers(a)lists.iptel.org >Subject: RE: [Serusers] PSTN >Date: Tue, 01 Jun 2004 05:02:54 +0000 > >Hi my second part is done...i have used t_relay_to_udp rather than > forward >for pstn calls and now logs are coming....for pstn as well > >but first is till not done. > > >From: "Kapil Dhawan" <sersavvy(a)hotmail.com> > >To: serusers(a)lists.iptel.org > >Subject: [Serusers] PSTN > >Date: Tue, 01 Jun 2004 00:59:07 +0000 > > > >Hi List > > > >I am running rtpproxy and nathelper which is fine for me...but when i >transfer all calls starting with 00 to my SIP gateway...then person > calling >from public IP is able to hear properly the pstn call and person calling >behind NAT can not hear but the pstn callee can hear that behind NAT > guy... > > > >and second is i am storing logs in acc table...there is i make a > SIP-SIP >call, i get proper logs but if i make PSTN call whether from public or >private IP, i only get BYE record.. > > > >below is my ser.cfg > > > > > ># > ># $Id: nathelper.cfg,v 1.1.2.1 2003/11/24 14:47:18 janakj Exp $ > ># > ># simple quick-start config script including nathelper support > > > ># This default script includes nathelper support. To make it work > ># you will also have to install Maxim's RTP proxy. The proxy is > enforced > ># if one of the parties is behind a NAT. > ># > ># If you have an endpoing in the public internet which is known to > ># support symmetric RTP (Cisco PSTN gateway or voicemail, for

> ># then you don't have to force RTP proxy. If you don't want to enforce > ># RTP proxy for some destinations than simply use t_relay() instead of > ># route(1) > ># > ># Sections marked with !! Nathelper contain modifications for

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