[Serusers] Re: Enabling calls to US-based 8xx numbers
Nikola Stojanoski
nikola at intrafon.com
Mon Mar 1 18:36:55 CET 2004
HI Klaus,
i'm testing SER to redirect the calls started with 00 to
natrelay.deltathree.com because my sip server is behind NAT, the scenario
is like this:
X-Lite --> SER --> DeltaThree --> etc ....
|_________|
NAT
X-Lite has 192.168.0.1
SER 192.168.0.2
and as i've told you i can send a call CANCEL it but i can't send BYE to
stop a call that is already in progress
Here is my config.
-------------------------------------------------------
debug=1 # i had this at "3" initially"
fork=yes
log_stderror=no # (cmd line: -E)
/* Uncomment these lines to enter debugging mode
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"
#
# Listen
#
listen=192.168.0.2
#
# Aliases
#
alias=igor.intranet.com.mk
alias=192.168.0.2
# ------------------ 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"
# We want to earn money, therefore we need accounting
loadmodule "/usr/local/lib/ser/modules/acc.so"
# !! Nathelper
loadmodule "/usr/local/lib/ser/modules/nathelper.so"
# ----------------- setting module-specific parameters ---------------
# -- usrloc params --
modparam("usrloc", "db_mode", 2)
modparam("usrloc", "db_url", "mysql://ser:heslo@localhost/ser")
#
# Accounting Setup
#
#modparam("acc", "db_url", "sql://ser:heslo@localhost/ser")
modparam("acc", "log_level", 1)
modparam("acc", "log_flag", 1)
# Account failed transactions
modparam("acc", "failed_transactions", 1)
# Which data should be accounted?
#
# c = Call-Id
# d = To tag (Dst)
# f = From
# i = Inbound Request-URI
# m = Method
# o = Outbound Request-URI
# r = fRom
# s = Status
# t = To
# u = digest Username
# p = username Part of inbound Request-URI
#
# default is "miocfs"
#
modparam("acc", "log_fmt", "miocfst")
# -- 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", "db_url", "mysql://ser:heslo@localhost/ser")
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
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
# ------------------------- request routing logic -------------------
# main routing logic
route{
# Accounting TEST
# How does this work anyway? And why 1+2?
setflag(1);
setflag(2);
# 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,
rewriting\n");
# 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 kphone it is
# called "symmetric media" and "symmetric signalling".
fix_nated_contact(); # Rewrite contact with source IP
of signalling
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
};
};
# 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") {
# SQL Digest Auth
if (!www_authorize("", "subscriber")) {
www_challenge("", "1");
break;
};
save("location");
break;
};
lookup("aliases");
if (!uri==myself) {
append_hf("P-hint: outbound alias\r\n");
route(1);
break;
};
# Destination DeltaThree
if( uri=~"^sip:00[0-9]*@.*")
{
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=~"^sip:(.+@)?(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();
};
# 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");
# Route to PSTN Gateways(s)
if (uri=~"^sip:00[0-9]*@.*") { ## This assumes that the
caller is
log("Forwarding to DeltaThree\n");
strip(2);
rewritehostport("natrelay.deltathree.com:5060");
t_relay();
break;
};
# Local Domain User
# 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();
};
}
Regards,
Nikola
> Hi Nikola!
>
> Without message dumps its impossible for us to solve your problems!
>
> regards,
> Klaus
>
> Nikola Stojanoski wrote:
>> I'm trying to setup SER to route my outgoing calls to DeltaThree's
>> servers. So far i'v managed to forward the calls but my problem is that
>> if
>> a call starts somehow i can't record route the call and my UA is not
>> sending BYE to the servers, so i'm getting billed more than i talk. For
>> call duration of 0:10 i can see 1:45 on deltathree servers.
>>
>> If you manage to work something out let me know.
>>
>
>
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