[Serusers] route to another sip server (newbie question)

[Marian Dumitru]

Hi Ozan,

If I get it right, all incoming calls having URI different than 833xxxx 
or 834xxxx to be routed to a gateway. To do so, add in the "if 
uri==myself" block, just before lookup("location") line the following block:
	if ( !(uri=~"sip:(833)|(834)") ) {
		t_relay_to_udp("212.XXX.32.YYY","5060");
		break;
	}

Don't worry, the media traffic will not go through your SER.

Best regards,
Marian



Ozan Blotter wrote:
> i've checked so many examples and read but not yet find any clear one with
> real examples for routing calls to another sip server.
> 
> config as follow:
> UA 1 : NAT : ROUTER A > INTERNET (SIP SER) INTERNET < ROUTER B : NAT : UA 2
> (for now i'm testing on LAN but soon i'll place SER on a Public IP)
> 
> and there's another sipserver at 212.XXX.32.YYY which we use as gateway,
> it connects all calls to PSTN. It's capable of doing billing,radius
> auth,sybase etc, all in one solution.
> 
> i want to give users numbers like 833XXXXXXX (prepaid) and 834XXXXXXX
> (postpaid) i create users with dialupadmin, it registers, they can call
> each other there's no problem but when i try to add some prefix routing it
> does not register or call, i am not familiar with linux but can do some.
> 
> what i need is i want to route all calls except beginning with 833 or 834
> prefix to be routed to 212.XXX.32.YYY and if possible not to use SER's
> bandwidth.
> 
> how can i ?
> 
> thanks
> 
> 
> 
> 
> below is my ser.cfg
> 
> #
> # $Id: ser.cfg,v 1.21.4.1 2003/11/10 15:35:15 andrei Exp $
> #
> # simple quick-start config script
> #
> 
> # ----------- global configuration parameters ------------------------
> 
> #debug=7
> #debug=3         # debug level (cmd line: -dddddddddd)
> #fork=yes
> #log_stderror=no        # (cmd line: -E)
> 
> /* Uncomment these lines to enter debugging mode
> debug=7
> fork=no
> log_stderror=yes
> */
> 
> 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"
> 
> # 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"
> loadmodule "/usr/local/lib/ser/modules/auth_radius.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 config),
> # 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)
> 
> # -------------------------  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;
>         };
> 
>         # 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
>         record_route();
> 
>         # loose-route processing
>         if (loose_route()) {
>                 t_relay();
>                 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("", "subscriber")) {
> #                               www_challenge("", "0");
> #                               break;
> #                       };
> 
> 
>                         if (!radius_www_authorize("")) {
>                                 www_challenge("", "0");
> 			break;
>                         };
> 
>                         save("location");
>                         break;
>                 };
> 
>                 # native SIP destinations are handled using our USRLOC DB
>                 if (!lookup("location")) {
>                         sl_send_reply("404", "Not Found");
>                         break;
>                 };
>         };
>         # forward to current uri now; use stateful forwarding; that
>         # works reliably even if we forward from TCP to UDP
>         if (!t_relay()) {
>                 sl_reply_error();
>         };
> 
> }
> 
> 

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