[Serusers] Problems with the SBC connection
jht2
hackglacier at 163.com
Tue Dec 7 16:48:34 CET 2004
Hi Guys:
I am testing the PSTN brake out to a SBC(Session Board Controller) with the ser.cfg below,it rewrite the uri and foward the calls to the SBC directly,but when UA makes a call to PSTN with 00 prefix,SER don't foward the "Invite" message to the SBC,only the ACK message is fowarded,and then the ACK error,but what is strange,the ring tone behind the SBC raise,in the UA(IP phone) side,it is a busy tone and 400 erro.
Please help and give me a quick reply,thanks.
ser.cfg
********************************************************
# ----------- global configuration parameters
------------------------
debug=9 # debug level (cmd line:-d)
fork=yes
log_stderror=yes # (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"
# ------------------ 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/exec.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"
loadmodule "/usr/local/lib/ser/modules/domain.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_radius.so"
loadmodule "/usr/local/lib/ser/modules/acc.so"
loadmodule "/usr/local/lib/ser/modules/xlog.so"
# !! Nathelper
loadmodule "/usr/local/lib/ser/modules/nathelper.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")
modparam("auth_radius","radius_config","/usr/local/etc/radiusclient/radiusclient.conf")
modparam("auth_radius","service_type",15)
modparam("acc","radius_config","/usr/local/etc/radiusclient/radiusclient.conf")
modparam("acc", "log_level", 1)
modparam("acc", "log_flag", 1)
modparam("acc", "db_flag", 1)
modparam("acc", "db_missed_flag", 2)
modparam("acc", "log_fmt", "miocfst")
modparam("acc", "failed_transactions" ,1)
modparam("acc", "radius_flag", 1)
modparam("acc", "service_type", 15)
modparam("acc", "radius_missed_flag", 3)
# -- 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
#xlog
#modparam("xlog", "buf_size", 8192)
# ------------------------- 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, 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
};
};
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") {
#cdr tool
if ( method == "REGISTER" ||method=="INVITE" || method=="BYE" || method =="CANCEL" ) {
# save messages in mysql for CDRTool
exec_msg("/usr/local/etc/ser/sertrace.py; exit 1");
};
#end of cdrtool
# Uncomment this if you want to use digest authentication
if (uri==myself) {
if (method=="REGISTER"){
if (!radius_www_authorize("194.165.196.72")) {
www_challenge("194.165.196.72", "0");
break;
};
save("location");
break;
};
if (method=="INVITE") {
log(1, "INVITE\n");
setflag(1); /* set for accounting(the same value as in log_flag!) */
};
if (method=="ACK") {
# if (uri=~"sip:0[1-9][0-9]+ at .*") {
# strip(2);
# prefix("2504");
# forward(uri:host, uri:port);
# rewritehostport("213.166.24.42:5060");
# };
log(1, "ACK\n");
setflag(1); /* set for accounting(the same value as in log_flag!) */
};
if (method=="MESSAGE") {
log(1, "MESSAGE\n");
setflag(1); /* set for accounting(the same value as in log_flag!) */
};
if ( method=="BYE" || method=="CANCEL" ) {
log (1, "BYE or CANCEL\n");
setflag(1);
};
record_route();
if (uri=~"sip:00[1-9][0-9]+ at .*") {
strip(2);
prefix("2504");
# forward(uri:host, uri:port);
rewritehostport("213.166.24.42:5060");
forward(213.166.24.42, 5060);
};
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();
};
# NAT processing of replies; apply to alltransactions (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();
};
}
祝
商祺！
Michael Shi( Shi Jia Lu石佳璐）
Director
Podium Vision Ltd (Shanghai,China Branch)
Tel: +86 (0)21 63293472
Mobile:+86 13311713825,+86 13916750280
Fax: +86 (0)21 63296364
MSN：glacier_shi @ hotmail.com
Email: michael at podiumvision.co.uk
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