SIP Server - Group calls

[alexll]

Run this once to update the config file. Modify SIP addresses as needed. If there's a call to user 200@192.168.0.9 then user 300@192.168.0.9 will also receive it.

Code:

io.writefile('/etc/kamailio/kamailio.cfg', [[ # modules loadmodule "/usr/lib/kamailio/modules/tm.so" loadmodule "/usr/lib/kamailio/modules/sl.so" loadmodule "/usr/lib/kamailio/modules_k/rr.so" loadmodule "/usr/lib/kamailio/modules_k/maxfwd.so" loadmodule "/usr/lib/kamailio/modules_k/usrloc.so" loadmodule "/usr/lib/kamailio/modules_k/registrar.so" # rr, add value to ;lr param to make some broken UAs happy modparam("rr", "enable_full_lr", 1) route {   if (!mf_process_maxfwd_header("10")) {     sl_send_reply("483", "Too Many Hops");     exit;   };   if (msg:len >= 2048) {     sl_send_reply("513", "Message too big");     exit;   };   if (method != "REGISTER") {     record_route();   };   if (method == "INVITE") {     if (uri == "sip:200@192.168.0.9;transport=udp") {       append_branch("sip:300@192.168.0.9;transport=udp");     };   };   if (loose_route()) {     route(1);     exit;   };   if (uri != myself) {     route(1);     exit;   };   if (uri == myself) {     if (method == "REGISTER") {       save("location");       exit;     };     lookup("aliases");     if (uri != myself) {       route(1);       exit;     };     if (!lookup("location")) {       sl_send_reply("404", "Not Found");       exit;     };   };   route(1); } route[1] {   if (!t_relay()) {     sl_reply_error();   }; } ]]) os.execute('/etc/init.d/kamailio restart')

I have just tried it and it doesn't work. I can still call every device but they don't redirect to the other.

For testing, I have created 3 users in my LM: 151, 152 and 153.
In your script, I have changed your example for mines: sip:151@192.168.0.222 and sip:152@192.168.0.222
I'm calling from 153 to 151. It rings but not 152.

Any other idea? Thanks in advance!