Connecting two SER servers to communicate with each other.

Phone "a" <---> Server "A" <------------> Server "B" <---> Phone "b"

Phone "a" should call phone "b" through both servers during call initiation and vice versa. Phone numbers from "A" starts with "1002" and from "B" with "1003".

Is there anyone who can help with the coding in ser.cfg?

Thanks in Advance

In A's ser.cfg, u need to make this.
Instead of this,

#if (is_method("INVITE")) {
# setflag(1); # do accounting
#}

change to

if(is_method("INVITE") && !src_ip=="B's ip")
{
rewritehost("B's ip");
}

In B's ser.cfg, u need to make this.
Instead of this,
#if (is_method("INVITE")) {
# setflag(1); # do accounting
#}

change to
if(is_method("INVITE") && !src_ip=="A's ip")
{
rewritehost("A's ip");
}

Try this..I think it works bcoz i tried like this.
Thank you...

I tried the code you gave me but it is not working, can you look at my code to see whats wrong. Thanks for you help!

# $Id: hello-world.cfg 46 2006-01-25 04:21:30Z /CN=Paul Hazlett/emailAddress=paul@onsip.org $
debug=5
fork=no
log_stderror=yes

#listen=164.11.38.171 # put your server IP address here
listen=172.16.100.97
port=5060
children=4

dns=no
rev_dns=no
#fifo="/tmp/ser_fifo"

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"

modparam("usrloc", "db_mode", 0)
modparam("rr", "enable_full_lr", 1)

route {

# ------------------------------------------------------------------------
# Sanity Check Section
# ------------------------------------------------------------------------
if (!mf_process_maxfwd_header("10"))
{
sl_send_reply("483", "Too Many Hops");
break;
};

if (msg:len > max_len)
{
sl_send_reply("513", "Message Overflow");
break;
};

# ------------------------------------------------------------------------
# Record Route Section
# ------------------------------------------------------------------------
if (method!="REGISTER")
{
record_route();
};

# ------------------------------------------------------------------------
# Loose Route Section
# ------------------------------------------------------------------------
if (loose_route())
{
route(1);
break;
};
# ------------------------------------------------------------------------
# Call Type Processing Section
# ------------------------------------------------------------------------
if (uri!=myself)
{
route(1);
break;
};

if (method=="ACK")
{
route(1);
break;
}
else if (method=="REGISTER")
{
route(2);
break;
};

lookup("aliases");
if (uri!=myself)
{
route(1);
break;
};

if (!lookup("location"))
{

{
if(is_method("INVITE") && !src_ip=="172.16.100.106")
{
rewritehost("172.16.100.106");
}
# if (uri!="~sip:1002@.*") #Transfers call from the Server B to Server A
# {
#rewritehostport("172.16.100.106:5060");
# forward(uri:host, uri:port);
#route(1);
# }
else
{
sl_send_reply("404", "User Not Found");
break;
};

route(1);
}
}

route[1]
{
# ------------------------------------------------------------------------
# Default Message Handler
# ------------------------------------------------------------------------
if (!t_relay())
{
sl_reply_error();
};

}

route[2]
{
# ------------------------------------------------------------------------
# REGISTER Message Handler
# ------------------------------------------------------------------------
if (!save("location"))
{
sl_reply_error();
};
}

Here i connected my two servers 77 and 94.
I'm providing my two cfg's.
77 server cfg is
#
# $Id: kamailio.cfg 5881 2009-06-22 09:13:04Z henningw $
#
# Kamailio (OpenSER) SIP Server - basic configuration script
# - web: http://www.kamailio.org
# - svn: http://openser.svn.sourceforge.net/viewvc/openser/
#
# Direct your questions about this file to: <users@lists.kamailio.org>
#
# Refer to the Core CookBook at http://www.kamailio.org/dokuwiki/doku.php
# for an explanation of possible statements, functions and parameters.
#
# There are comments showing how to enable different features in th econfig
# file. Such commented code starts with #X# where X is a letter to identify
# a feature. Delete entire #X# if you want to enable that feature. Next are
# sed commands that help you enable such features.
#
# *** To enamble mysql execute:
# sed -i 's///g' kamailio.cfg
#
# *** To enamble authentication execute:
# - enable mysql
# sed -i 's///g' kamailio.cfg
# - add users using 'kamctl'
#
# *** To enamble persistent user location execute:
# - enable mysql
# sed -i 's/#u#//g' kamailio.cfg
#
# *** To enamble presence server execute:
# - enable mysql
# sed -i 's/#p#//g' kamailio.cfg
#
# *** To enamble nat traversal execute:
# sed -i 's/#n#//g' kamailio.cfg
# - install RTPProxy: http://www.rtpproxy.org
# - start RTPProxy:
# rtpproxy -l _your_public_ip_ -s udp:localhost:7722
#
# *** To enhance accounting execute:
# - enable mysql
# sed -i 's/#c#//g' kamailio.cfg
# - add following columns to database
# ALTER TABLE acc ADD COLUMN src_user VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE acc ADD COLUMN src_domain VARCHAR(128) NOT NULL DEFAULT '';
# ALTER TABLE acc ADD COLUMN dst_ouser VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE acc ADD COLUMN dst_user VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE acc ADD COLUMN dst_domain VARCHAR(128) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN src_user VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN src_domain VARCHAR(128) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN dst_ouser VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN dst_user VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN dst_domain VARCHAR(128) NOT NULL DEFAULT '';
#


####### Global Parameters #########

debug=3
log_stderror=yes
log_facility=LOG_LOCAL0

fork=yes
children=4

/* uncomment the following lines to enable debugging */
#debug=6
#fork=no
#log_stderror=yes

/* uncomment the next line to disable TCP (default on) */
#disable_tcp=yes

/* uncomment the next line to enable the auto temporary blacklisting of
not available destinations (default disabled) */
#disable_dns_blacklist=no

/* uncomment the next line to enable IPv6 lookup after IPv4 dns
lookup failures (default disabled) */
#dns_try_ipv6=yes

/* uncomment the next line to disable the auto discovery of local aliases
based on revers DNS on IPs (default on) */
#auto_aliases=no

/* uncomment the following lines to enable TLS support (default off) */
#disable_tls = no
#listen = tls:your_IP:5061
#tls_verify_server = 1
#tls_verify_client = 1
#tls_require_client_certificate = 0
#tls_method = TLSv1
#tls_certificate = "/usr/local/etc/kamailio/tls/user/user-cert.pem"
#tls_private_key = "/usr/local/etc/kamailio/tls/user/user-privkey.pem"
#tls_ca_list = "/usr/local/etc/kamailio/tls/user/user-calist.pem"


port=5060

/* 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:192.168.1.2:5060


####### Modules Section ########

#set module path
mpath="/usr/local/lib/kamailio/modules/"

/* uncomment next line for MySQL DB support */
loadmodule "db_mysql.so"
loadmodule "mi_fifo.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "rr.so"
loadmodule "pv.so"
loadmodule "maxfwd.so"
loadmodule "usrloc.so"
loadmodule "registrar.so"
loadmodule "textops.so"
loadmodule "uri_db.so"
loadmodule "siputils.so"
loadmodule "xlog.so"
loadmodule "acc.so"
loadmodule "imc.so"


/* uncomment next lines for MySQL based authentication support
NOTE: a DB (like db_mysql) module must be also loaded */
loadmodule "auth.so"
loadmodule "auth_db.so"
/* uncomment next line for aliases support
NOTE: a DB (like db_mysql) module must be also loaded */
#loadmodule "alias_db.so"
/* uncomment next line for multi-domain support
NOTE: a DB (like db_mysql) module must be also loaded
NOTE: be sure and enable multi-domain support in all used modules
(see "multi-module params" section ) */
#loadmodule "domain.so"
/* uncomment the next two lines for presence server support
NOTE: a DB (like db_mysql) module must be also loaded */
#p#loadmodule "presence.so"
#p#loadmodule "presence_xml.so"

#n#loadmodule "nathelper.so"

# ----------------- setting module-specific parameters ---------------


# ----- mi_fifo params -----
modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")


# ----- rr params -----
# add value to ;lr param to cope with most of the UAs
modparam("rr", "enable_full_lr", 1)
# do not append from tag to the RR (no need for this script)
modparam("rr", "append_fromtag", 0)


# ----- rr params -----
modparam("registrar", "method_filtering", 1)
/* uncomment the next line to disable parallel forking via location */
# modparam("registrar", "append_branches", 0)
/* uncomment the next line not to allow more than 10 contacts per AOR */
#modparam("registrar", "max_contacts", 10)


# ----- uri_db params -----
/* by default we disable the DB support in the module as we do not need it
in this configuration */
modparam("uri_db", "use_uri_table", 0)
modparam("uri_db", "db_url", "")


# ----- acc params -----
/* what sepcial events should be accounted ? */
modparam("acc", "early_media", 1)
modparam("acc", "report_ack", 1)
modparam("acc", "report_cancels", 1)
/* by default ww do not adjust the direct of the sequential requests.
if you enable this parameter, be sure the enable "append_fromtag"
in "rr" module */
modparam("acc", "detect_direction", 0)
/* account triggers (flags) */
modparam("acc", "failed_transaction_flag", 3)
modparam("acc", "log_flag", 1)
modparam("acc", "log_missed_flag", 2)
modparam("acc", "log_extra",
"src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")
/* uncomment the following lines to enable DB accounting also */
#c#modparam("acc", "db_flag", 1)
#c#modparam("acc", "db_missed_flag", 2)
#c#modparam("acc", "db_url",
#c# "mysql://openser:openserrw@localhost/openser")
#c#modparam("acc", "db_extra",
#c# "src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")


# ----- usrloc params -----
/* uncomment the following lines if you want to enable DB persistency
for location entries */
#u#modparam("usrloc", "db_mode", 2)
#u#modparam("usrloc", "db_url",
#u# "mysql://openser:openserrw@localhost/openser")

# ----- auth_db params -----
/* uncomment the following lines if you want to enable the DB based
authentication */
modparam("auth_db", "calculate_ha1", yes)
modparam("auth_db", "password_column", "password")
modparam("auth_db", "db_url",
"mysql://openser:openserrw@localhost/openser")
modparam("auth_db", "load_credentials", "")


# ----- alias_db params -----
/* uncomment the following lines if you want to enable the DB based
aliases */
#modparam("alias_db", "db_url",
# "mysql://openser:openserrw@localhost/openser")


# ----- domain params -----
/* uncomment the following lines to enable multi-domain detection
support */
#modparam("domain", "db_url",
# "mysql://openser:openserrw@localhost/openser")
#modparam("domain", "db_mode", 1) # Use caching


# ----- multi-module params -----
/* uncomment the following line if you want to enable multi-domain support
in the modules (dafault off) */
#modparam("alias_db|auth_db|usrloc|uri_db", "use_domain", 1)


# ----- presence params -----
/* uncomment the following lines if you want to enable presence */
#p#modparam("presence|presence_xml", "db_url",
#p# "mysql://openser:openserrw@localhost/openser")
#p#modparam("presence_xml", "force_active", 1)
#p#modparam("presence", "server_address", "sip:192.168.1.2:5060")

# -- nathelper
#n#modparam("nathelper", "rtpproxy_sock", "udp:127.0.0.1:7722")
#n#modparam("nathelper", "natping_interval", 30)
#n#modparam("nathelper", "ping_nated_only", 1)
#n#modparam("nathelper", "sipping_bflag", 7)
#n#modparam("nathelper", "sipping_from", "sip:pinger@kamailio.org")
#n#modparam("registrar|nathelper", "received_avp", "$avp(i:80)")

#-------tm params-----
modparam("tm", "fr_timer", 10 )
modparam("tm", "fr_inv_timer", 15 )
modparam("tm", "wt_timer", 10 )


#-------imc params-----
modparam("imc", "db_url", "mysql://openser:openserrw@192.168.64.77/openser")
modparam("imc", "hash_size",
modparam("imc", "imc_cmd_start_char", "#")




#n#modparam("usrloc", "nat_bflag", 6)

####### Routing Logic ########


# main request routing logic

route{

if (!mf_process_maxfwd_header("10")) {
sl_send_reply("483","Too Many Hops");
exit;
}

# NAT detection
route(4);

if (has_totag()) {
# sequential request withing a dialog should
# take the path determined by record-routing
if (loose_route()) {
if (is_method("BYE")) {
setflag(1); # do accounting ...
setflag(3); # ... even if the transaction fails
}
route(1);
} else {
if (is_method("SUBSCRIBE") && uri == myself) {
# in-dialog subscribe requests
route(2);
exit;
}
if ( is_method("ACK") ) {
if ( t_check_trans() ) {
# non loose-route, but stateful ACK; must be an ACK after a 487 or e.g. 404 from upstream server
t_relay();
exit;
} else {
# ACK without matching transaction ... ignore and discard.\n");
exit;
}
}
sl_send_reply("404","Not here");
}
exit;
}

#initial requests

# CANCEL processing
if (is_method("CANCEL"))
{
if (t_check_trans())
t_relay();
exit;
}

t_check_trans();

# authentication
route(3);

# record routing
if (!is_method("REGISTER|MESSAGE"))
record_route();

# account only INVITEs
#if (is_method("INVITE")) {
# setflag(1); # do accounting
#}

#-------------------------------------------------------
if(is_method("INVITE") && !src_ip=="192.168.64.94")
{
rewritehost("192.168.64.94");
}
#--------------------------------------------------------


if (!uri==myself)
/* replace with following line if multi-domain support is used */
##if (!is_uri_host_local())
{
append_hf("P-hint: outbound\r\n");
# if you have some interdomain connections via TLS
##if($rd=="tls_domain1.net") {
## t_relay("tls:domain1.net");
## exit;
##} else if($rd=="tls_domain2.net") {
## t_relay("tls:domain2.net");
## exit;
##}
route(1);
}

# requests for my domain

if( is_method("PUBLISH|SUBSCRIBE"))
route(2);

if (is_method("REGISTER"))
{
if (!save("location"))
sl_reply_error();

exit;
}



if(uri=~"sip:q.*@")
{
# IMC - message
xdbg("script: message from [$fu] r-uri [$ru] msg [$rb]\n");
if(is_method("MESSAGE"))
{
log("MESSAGE received -> processing with imc\n");
sl_send_reply("200", "ok");

imc_manager();

exit;
} else {
sl_send_reply("404", "not found");
exit;
};
} else {
xdbg("script: message not for room, from [$fu] r-uri [$ru] msg [$rb]\n");
if(!lookup("location"))
{
sl_send_reply("404", "not found");
exit;
}
t_relay();
#sl_send_reply("200", "ok");
exit();
};



if ($rU==NULL) {
# request with no Username in RURI
sl_send_reply("484","Address Incomplete");
exit;
}

# apply DB based aliases (uncomment to enable)
##alias_db_lookup("dbaliases");

if (!lookup("location")) {
switch ($retcode) {
case -1:
case -3:
t_newtran();
t_reply("404", "Not Found");
exit;
case -2:
sl_send_reply("405", "Method Not Allowed");
exit;
}
}

# when routing via usrloc, log the missed calls also
setflag(2);

route(1);
}


route[1] {
#n# if (check_route_param("nat=yes")) {
#n# setbflag(6);
#n# }
#n# if (isflagset(5) || isbflagset(6)) {
#n# route(5);
#n# }

/* example how to enable some additional event routes */
if (is_method("INVITE")) {
#t_on_branch("1");
t_on_reply("1");
t_on_failure("1");
}

if (!t_relay()) {
sl_reply_error();
}
exit;
}


# Presence route
/* uncomment the whole following route for enabling presence server */
route[2]
{
#p# if (!t_newtran())
#p# {
#p# sl_reply_error();
#p# exit;
#p# };
#p#
#p# if(is_method("PUBLISH"))
#p# {
#p# handle_publish();
#p# t_release();
#p# }
#p# else
#p# if( is_method("SUBSCRIBE"))
#p# {
#p# handle_subscribe();
#p# t_release();
#p# }
#p# exit;

# if presence enabled, this part will not be executed
if (is_method("PUBLISH") || $rU==null)
{
sl_send_reply("404", "Not here");
exit;
}
return;
}

# Authentication route
/* uncomment the whole following route for enabling authentication */
route[3] {
if (is_method("REGISTER"))
{
# authenticate the REGISTER requests (uncomment to enable auth)
if (!www_authorize("", "subscriber"))
{
www_challenge("", "0");
exit;
}

if ($au!=$tU)
{
sl_send_reply("403","Forbidden auth ID");
exit;
}
} else {
# authenticate if from local subscriber (uncomment to enable auth)
if (from_uri==myself)
{
if (!proxy_authorize("", "subscriber")) {
proxy_challenge("", "0");
exit;
}
if (is_method("PUBLISH"))
{
if ($au!=$tU) {
sl_send_reply("403","Forbidden auth ID");
exit;
}
} else {
if ($au!=$fU) {
sl_send_reply("403","Forbidden auth ID");
exit;
}
}

consume_credentials();
# caller authenticated
}
}
return;
}

# Caller NAT detection route
/* uncomment the whole following route for enabling Caller NAT Detection */
route[4]{
#n# force_rport();
#n# if (nat_uac_test("19")) {
#n# if (method=="REGISTER") {
#n# fix_nated_register();
#n# } else {
#n# fix_nated_contact();
#n# }
#n# setflag(5);
#n# }
return;
}

# RTPProxy control
/* uncomment the whole following route for enabling RTPProxy Control */
route[5] {
#n# if (is_method("BYE")) {
#n# unforce_rtp_proxy();
#n# } else if (is_method("INVITE")){
#n# force_rtp_proxy();
#n# }
#n# if (!has_totag()) add_rr_param(";nat=yes");
return;
}

branch_route[1] {
xdbg("new branch at $ru\n");
}


onreply_route[1] {
xdbg("incoming reply\n");

#n# if ((isflagset(5) || isbflagset(6)) && status=~"(183)|(2[0-9][0-9])") {
#n# force_rtp_proxy();
#n# }
#n# if (isbflagset(6)) {
#n# fix_nated_contact();
#n# }
}


failure_route[1] {
#n# if (is_method("INVITE")
#n# && (isbflagset(6) || isflagset(5))) {
#n# unforce_rtp_proxy();
#n# }

if (t_was_cancelled()) {
exit;
}

# uncomment the following lines if you want to block client
# redirect based on 3xx replies.
##if (t_check_status("3[0-9][0-9]")) {
##t_reply("404","Not found");
## exit;
##}

# uncomment the following lines if you want to redirect the failed
# calls to a different new destination
##if (t_check_status("486|408")) {
## sethostport("192.168.2.100:5060");
## append_branch();
## # do not set the missed call flag again
## t_relay();
##}
}



and 94 servers cfg is
#
# $Id: kamailio.cfg 5881 2009-06-22 09:13:04Z henningw $
#
# Kamailio (OpenSER) SIP Server - basic configuration script
# - web: http://www.kamailio.org
# - svn: http://openser.svn.sourceforge.net/viewvc/openser/
#
# Direct your questions about this file to: <users@lists.kamailio.org>
#
# Refer to the Core CookBook at http://www.kamailio.org/dokuwiki/doku.php
# for an explanation of possible statements, functions and parameters.
#
# There are comments showing how to enable different features in th econfig
# file. Such commented code starts with #X# where X is a letter to identify
# a feature. Delete entire #X# if you want to enable that feature. Next are
# sed commands that help you enable such features.
#
# *** To enamble mysql execute:
# sed -i 's///g' kamailio.cfg
#
# *** To enamble authentication execute:
# - enable mysql
# sed -i 's///g' kamailio.cfg
# - add users using 'kamctl'
#
# *** To enamble persistent user location execute:
# - enable mysql
# sed -i 's/#u#//g' kamailio.cfg
#
# *** To enamble presence server execute:
# - enable mysql
# sed -i 's/#p#//g' kamailio.cfg
#
# *** To enamble nat traversal execute:
# sed -i 's/#n#//g' kamailio.cfg
# - install RTPProxy: http://www.rtpproxy.org
# - start RTPProxy:
# rtpproxy -l _your_public_ip_ -s udp:localhost:7722
#
# *** To enhance accounting execute:
# - enable mysql
# sed -i 's/#c#//g' kamailio.cfg
# - add following columns to database
# ALTER TABLE acc ADD COLUMN src_user VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE acc ADD COLUMN src_domain VARCHAR(128) NOT NULL DEFAULT '';
# ALTER TABLE acc ADD COLUMN dst_ouser VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE acc ADD COLUMN dst_user VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE acc ADD COLUMN dst_domain VARCHAR(128) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN src_user VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN src_domain VARCHAR(128) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN dst_ouser VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN dst_user VARCHAR(64) NOT NULL DEFAULT '';
# ALTER TABLE missed_calls ADD COLUMN dst_domain VARCHAR(128) NOT NULL DEFAULT '';
#


####### Global Parameters #########

debug=3
log_stderror=yes
log_facility=LOG_LOCAL0

fork=yes
children=4

/* uncomment the following lines to enable debugging */
#debug=6
#fork=no
#log_stderror=yes

/* uncomment the next line to disable TCP (default on) */
#disable_tcp=yes

/* uncomment the next line to enable the auto temporary blacklisting of
not available destinations (default disabled) */
#disable_dns_blacklist=no

/* uncomment the next line to enable IPv6 lookup after IPv4 dns
lookup failures (default disabled) */
#dns_try_ipv6=yes

/* uncomment the next line to disable the auto discovery of local aliases
based on revers DNS on IPs (default on) */
#auto_aliases=no

/* uncomment the following lines to enable TLS support (default off) */
#disable_tls = no
#listen = tls:your_IP:5061
#tls_verify_server = 1
#tls_verify_client = 1
#tls_require_client_certificate = 0
#tls_method = TLSv1
#tls_certificate = "/usr/local/etc/kamailio/tls/user/user-cert.pem"
#tls_private_key = "/usr/local/etc/kamailio/tls/user/user-privkey.pem"
#tls_ca_list = "/usr/local/etc/kamailio/tls/user/user-calist.pem"


port=5060

/* 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:192.168.1.2:5060


####### Modules Section ########

#set module path
mpath="/usr/local/lib/kamailio/modules/"

/* uncomment next line for MySQL DB support */
loadmodule "db_mysql.so"
loadmodule "mi_fifo.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "rr.so"
loadmodule "pv.so"
loadmodule "maxfwd.so"
loadmodule "usrloc.so"
loadmodule "registrar.so"
loadmodule "textops.so"
loadmodule "uri_db.so"
loadmodule "siputils.so"
loadmodule "xlog.so"
loadmodule "acc.so"
loadmodule "imc.so"


/* uncomment next lines for MySQL based authentication support
NOTE: a DB (like db_mysql) module must be also loaded */
loadmodule "auth.so"
loadmodule "auth_db.so"
/* uncomment next line for aliases support
NOTE: a DB (like db_mysql) module must be also loaded */
#loadmodule "alias_db.so"
/* uncomment next line for multi-domain support
NOTE: a DB (like db_mysql) module must be also loaded
NOTE: be sure and enable multi-domain support in all used modules
(see "multi-module params" section ) */
#loadmodule "domain.so"
/* uncomment the next two lines for presence server support
NOTE: a DB (like db_mysql) module must be also loaded */
#p#loadmodule "presence.so"
#p#loadmodule "presence_xml.so"

#n#loadmodule "nathelper.so"

# ----------------- setting module-specific parameters ---------------


# ----- mi_fifo params -----
modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")


# ----- rr params -----
# add value to ;lr param to cope with most of the UAs
modparam("rr", "enable_full_lr", 1)
# do not append from tag to the RR (no need for this script)
modparam("rr", "append_fromtag", 0)


# ----- rr params -----
modparam("registrar", "method_filtering", 1)
/* uncomment the next line to disable parallel forking via location */
# modparam("registrar", "append_branches", 0)
/* uncomment the next line not to allow more than 10 contacts per AOR */
#modparam("registrar", "max_contacts", 10)


# ----- uri_db params -----
/* by default we disable the DB support in the module as we do not need it
in this configuration */
modparam("uri_db", "use_uri_table", 0)
modparam("uri_db", "db_url", "")


# ----- acc params -----
/* what sepcial events should be accounted ? */
modparam("acc", "early_media", 1)
modparam("acc", "report_ack", 1)
modparam("acc", "report_cancels", 1)
/* by default ww do not adjust the direct of the sequential requests.
if you enable this parameter, be sure the enable "append_fromtag"
in "rr" module */
modparam("acc", "detect_direction", 0)
/* account triggers (flags) */
modparam("acc", "failed_transaction_flag", 3)
modparam("acc", "log_flag", 1)
modparam("acc", "log_missed_flag", 2)
modparam("acc", "log_extra",
"src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")
/* uncomment the following lines to enable DB accounting also */
#c#modparam("acc", "db_flag", 1)
#c#modparam("acc", "db_missed_flag", 2)
#c#modparam("acc", "db_url",
#c# "mysql://openser:openserrw@localhost/openser")
#c#modparam("acc", "db_extra",
#c# "src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")


# ----- usrloc params -----
/* uncomment the following lines if you want to enable DB persistency
for location entries */
#u#modparam("usrloc", "db_mode", 2)
#u#modparam("usrloc", "db_url",
#u# "mysql://openser:openserrw@localhost/openser")

# ----- auth_db params -----
/* uncomment the following lines if you want to enable the DB based
authentication */
modparam("auth_db", "calculate_ha1", yes)
modparam("auth_db", "password_column", "password")
modparam("auth_db", "db_url",
"mysql://openser:openserrw@localhost/openser")
modparam("auth_db", "load_credentials", "")


# ----- alias_db params -----
/* uncomment the following lines if you want to enable the DB based
aliases */
#modparam("alias_db", "db_url",
# "mysql://openser:openserrw@localhost/openser")


# ----- domain params -----
/* uncomment the following lines to enable multi-domain detection
support */
#modparam("domain", "db_url",
# "mysql://openser:openserrw@localhost/openser")
#modparam("domain", "db_mode", 1) # Use caching


# ----- multi-module params -----
/* uncomment the following line if you want to enable multi-domain support
in the modules (dafault off) */
#modparam("alias_db|auth_db|usrloc|uri_db", "use_domain", 1)


# ----- presence params -----
/* uncomment the following lines if you want to enable presence */
#p#modparam("presence|presence_xml", "db_url",
#p# "mysql://openser:openserrw@localhost/openser")
#p#modparam("presence_xml", "force_active", 1)
#p#modparam("presence", "server_address", "sip:192.168.1.2:5060")

# -- nathelper
#n#modparam("nathelper", "rtpproxy_sock", "udp:127.0.0.1:7722")
#n#modparam("nathelper", "natping_interval", 30)
#n#modparam("nathelper", "ping_nated_only", 1)
#n#modparam("nathelper", "sipping_bflag", 7)
#n#modparam("nathelper", "sipping_from", "sip:pinger@kamailio.org")
#n#modparam("registrar|nathelper", "received_avp", "$avp(i:80)")

#-------tm params-----
modparam("tm", "fr_timer", 10 )
modparam("tm", "fr_inv_timer", 15 )
modparam("tm", "wt_timer", 10 )


#-------imc params-----
modparam("imc", "db_url", "mysql://openser:openserrw@192.168.64.77/openser")
modparam("imc", "hash_size",
modparam("imc", "imc_cmd_start_char", "#")




#n#modparam("usrloc", "nat_bflag", 6)

####### Routing Logic ########


# main request routing logic

route{

if (!mf_process_maxfwd_header("10")) {
sl_send_reply("483","Too Many Hops");
exit;
}

# NAT detection
route(4);

if (has_totag()) {
# sequential request withing a dialog should
# take the path determined by record-routing
if (loose_route()) {
if (is_method("BYE")) {
setflag(1); # do accounting ...
setflag(3); # ... even if the transaction fails
}
route(1);
} else {
if (is_method("SUBSCRIBE") && uri == myself) {
# in-dialog subscribe requests
route(2);
exit;
}
if ( is_method("ACK") ) {
if ( t_check_trans() ) {
# non loose-route, but stateful ACK; must be an ACK after a 487 or e.g. 404 from upstream server
t_relay();
exit;
} else {
# ACK without matching transaction ... ignore and discard.\n");
exit;
}
}
sl_send_reply("404","Not here");
}
exit;
}

#initial requests

# CANCEL processing
if (is_method("CANCEL"))
{
if (t_check_trans())
t_relay();
exit;
}

t_check_trans();

# authentication
route(3);

# record routing
if (!is_method("REGISTER|MESSAGE"))
record_route();

# account only INVITEs
#if (is_method("INVITE")) {
# setflag(1); # do accounting
#}

#-------------------------------------------------------

if(is_method("INVITE") && !src_ip=="192.168.64.77")
{
rewritehost("192.168.64.77");
}

#-------------------------------------------------------





if (!uri==myself)
/* replace with following line if multi-domain support is used */
##if (!is_uri_host_local())
{
append_hf("P-hint: outbound\r\n");
# if you have some interdomain connections via TLS
##if($rd=="tls_domain1.net") {
## t_relay("tls:domain1.net");
## exit;
##} else if($rd=="tls_domain2.net") {
## t_relay("tls:domain2.net");
## exit;
##}
route(1);
}

# requests for my domain

if( is_method("PUBLISH|SUBSCRIBE"))
route(2);

if (is_method("REGISTER"))
{
if (!save("location"))
sl_reply_error();

exit;
}



if(uri=~"sip:q.*@")
{
# IMC - message
xdbg("script: message from [$fu] r-uri [$ru] msg [$rb]\n");
if(is_method("MESSAGE"))
{
log("MESSAGE received -> processing with imc\n");
sl_send_reply("200", "ok");

imc_manager();

exit;
} else {
sl_send_reply("404", "not found");
exit;
};
} else {
xdbg("script: message not for room, from [$fu] r-uri [$ru] msg [$rb]\n");
if(!lookup("location"))
{
sl_send_reply("404", "not found");
exit;
}
t_relay();
#sl_send_reply("200", "ok");
exit();
};



if ($rU==NULL) {
# request with no Username in RURI
sl_send_reply("484","Address Incomplete");
exit;
}

# apply DB based aliases (uncomment to enable)
##alias_db_lookup("dbaliases");

if (!lookup("location")) {
switch ($retcode) {
case -1:
case -3:
t_newtran();
t_reply("404", "Not Found");
exit;
case -2:
sl_send_reply("405", "Method Not Allowed");
exit;
}
}

# when routing via usrloc, log the missed calls also
setflag(2);

route(1);
}


route[1] {
#n# if (check_route_param("nat=yes")) {
#n# setbflag(6);
#n# }
#n# if (isflagset(5) || isbflagset(6)) {
#n# route(5);
#n# }

/* example how to enable some additional event routes */
if (is_method("INVITE")) {
#t_on_branch("1");
t_on_reply("1");
t_on_failure("1");
}

if (!t_relay()) {
sl_reply_error();
}
exit;
}


# Presence route
/* uncomment the whole following route for enabling presence server */
route[2]
{
#p# if (!t_newtran())
#p# {
#p# sl_reply_error();
#p# exit;
#p# };
#p#
#p# if(is_method("PUBLISH"))
#p# {
#p# handle_publish();
#p# t_release();
#p# }
#p# else
#p# if( is_method("SUBSCRIBE"))
#p# {
#p# handle_subscribe();
#p# t_release();
#p# }
#p# exit;

# if presence enabled, this part will not be executed
if (is_method("PUBLISH") || $rU==null)
{
sl_send_reply("404", "Not here");
exit;
}
return;
}

# Authentication route
/* uncomment the whole following route for enabling authentication */
route[3] {
if (is_method("REGISTER"))
{
# authenticate the REGISTER requests (uncomment to enable auth)
if (!www_authorize("", "subscriber"))
{
www_challenge("", "0");
exit;
}

if ($au!=$tU)
{
sl_send_reply("403","Forbidden auth ID");
exit;
}
} else {
# authenticate if from local subscriber (uncomment to enable auth)
if (from_uri==myself)
{
if (!proxy_authorize("", "subscriber")) {
proxy_challenge("", "0");
exit;
}
if (is_method("PUBLISH"))
{
if ($au!=$tU) {
sl_send_reply("403","Forbidden auth ID");
exit;
}
} else {
if ($au!=$fU) {
sl_send_reply("403","Forbidden auth ID");
exit;
}
}

consume_credentials();
# caller authenticated
}
}
return;
}

# Caller NAT detection route
/* uncomment the whole following route for enabling Caller NAT Detection */
route[4]{
#n# force_rport();
#n# if (nat_uac_test("19")) {
#n# if (method=="REGISTER") {
#n# fix_nated_register();
#n# } else {
#n# fix_nated_contact();
#n# }
#n# setflag(5);
#n# }
return;
}

# RTPProxy control
/* uncomment the whole following route for enabling RTPProxy Control */
route[5] {
#n# if (is_method("BYE")) {
#n# unforce_rtp_proxy();
#n# } else if (is_method("INVITE")){
#n# force_rtp_proxy();
#n# }
#n# if (!has_totag()) add_rr_param(";nat=yes");
return;
}

branch_route[1] {
xdbg("new branch at $ru\n");
}


onreply_route[1] {
xdbg("incoming reply\n");

#n# if ((isflagset(5) || isbflagset(6)) && status=~"(183)|(2[0-9][0-9])") {
#n# force_rtp_proxy();
#n# }
#n# if (isbflagset(6)) {
#n# fix_nated_contact();
#n# }
}


failure_route[1] {
#n# if (is_method("INVITE")
#n# && (isbflagset(6) || isflagset(5))) {
#n# unforce_rtp_proxy();
#n# }

if (t_was_cancelled()) {
exit;
}

# uncomment the following lines if you want to block client
# redirect based on 3xx replies.
##if (t_check_status("3[0-9][0-9]")) {
##t_reply("404","Not found");
## exit;
##}

# uncomment the following lines if you want to redirect the failed
# calls to a different new destination
##if (t_check_status("486|408")) {
## sethostport("192.168.2.100:5060");
## append_branch();
## # do not set the missed call flag again
## t_relay();
##}
}


Please try this....This is working for me....Thank u..