Hello,

Ranganath B wrote:
Hi,

After reading through the "SEMS-mini Howto on how to configure SER and SEMS to work together", I could successfully register 2 Xlite Softphones and now I found that the INVITE message is being sent from SER to SEMS. After receiving INVITE message from SER, SEMS gives the error message "ERROR: startSessionUAS (AmSessionContainer.cpp:257): startSession: Unknown Application" and responds with "500 I'm terribly sorry, server error occurred (1/SL)" and "500 Unknown Application". Please help me in resolving this issue, working conf files ser.cfg and sems.conf would also be of great help.

Now I am running SEMS and only one instance of SER at port 5060.
if you only want to use sems with one application, e.g. conference, you can use second parameter of t_write_unix:

if (method=="INVITE"){
        if(!t_write_unix("/tmp/sems_sock","conference")){
                   log("could not contact sems\n");
                   t_reply("500","could not contact media server");
        }

I have attached the modified ser-sems.cfg.

Btw if you try sems trunk version, or a more recent snapshot (see eg here: http://ftp.iptel.org/pub/sems/testing/) you will find that this has become much easier now: for one, you can set application=conference in sems.conf, or define an application mapping regexp->application (see 'aplication' parameter explaoined in http://svn.berlios.de/wsvn/sems/trunk/core/etc/sems.conf.sample and example here http://svn.berlios.de/wsvn/sems/trunk/core/etc/app_mapping.conf), and second, sems has now an optional internal sip stack, so you don't need ser for it any more.

Stefan

I have attached the sems.conf and ser-sems.conf for your reference.

Thanks in advance,
Ranganath B


On Thu, Apr 10, 2008 at 9:50 AM, Ranganath B <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:

    Hi,
I am new to SEMS but I have been using SER from a long time, so
    thought of installing SEMS to test different options and features
    supported by SEMS. I have installed the sems-0.10.0 bundle
    <ftp://ftp.iptel.org/pub/sems/sems-0.10.0-bundle.tar.gz> (bundled
    with SER for easy installation) and then followed all the steps
    mentioned. Now I am running the following:
1) SEMS using the comamnd /usr/local/sbin/sems -D 3 -E - Which gives
    the following error messages:
ERROR: onLoad (RegistrationAgent.cpp:69): Account for registration
    not correctly configured.
    ERROR: onLoad (RegistrationAgent.cpp:70): RegistrationAgent will not
    register any accounts.
2) SER stack for SEMS at port 5070 using the command:
    /opt/ser/sbin/ser -f /opt/ser/etc/ser/ser.cfg
3) SER (0.9.7) with mysql support at port 5060. Currently I am facing 2 issues, first one being the error messages
    that I get when I run SEMS and second one being with the calls. When
    I placed call between 2 Xlite SIP Softphones registered with SER at
    port 5060 I observed that the media negotiation is between peer
    i.e., between 2 Xlites. So the RTP packets are actually exchanged
    between 2 Xlites peer-to-peer and not through the SEMS. Please
    provide me help on how to place calls through SEMS, so that I can
    continue with other features such as voicemail etc?
Regards,
    Ranga



------------------------------------------------------------------------

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--
Stefan Sayer
VoIP Services

[EMAIL PROTECTED]
www.iptego.com

iptego GmbH
Am Borsigturm 40
13507 Berlin
Germany

Amtsgericht Charlottenburg, HRB 101010
Geschaeftsfuehrer: Alexander Hoffmann
#
# simple Ser config script to start using Sems.
#

# ----------- global configuration parameters ------------------------

#debug=3         # debug level (cmd line: -dddddddddd)
#fork=yes
#log_stderror=no        # (cmd line: -E)

/* Uncomment these lines to enter debugging mode 
debug=255
fork=yes
log_stderror=yes
*/

check_via=yes    # (cmd. line: -v)
syn_branch=no
dns=no           # (cmd. line: -r)
rev_dns=no      # (cmd. line: -R)
port=5060
listen=192.168.1.5
children=4

# Configure Ser to create a FIFO server
fifo = "/tmp/ser_fifo"
fifo_mode = 0777
unix_sock="/tmp/ser_fifo"

# Configure FIFO DB
fifo_db_url="mysql://ser:[EMAIL PROTECTED]/ser"
#
# ------------------ module loading ----------------------------------
# either dbtext or mysql
# loadmodule "modules/dbtext/dbtext.so"
# 
# if installed via make install, modules are in /usr/ser-sems/lib/ser/modules/
# (e.g. loadmodule "/usr/ser-sems/lib/ser/modules/mysql.so")
loadmodule "/opt/ser-sems/lib/ser/modules/mysql.so"

loadmodule "/opt/ser-sems/lib/ser/modules/sl.so"
loadmodule "/opt/ser-sems/lib/ser/modules/tm.so"
loadmodule "/opt/ser-sems/lib/ser/modules/rr.so"
loadmodule "/opt/ser-sems/lib/ser/modules/maxfwd.so"
loadmodule "/opt/ser-sems/lib/ser/modules/usrloc.so"
loadmodule "/opt/ser-sems/lib/ser/modules/registrar.so"
loadmodule "/opt/ser-sems/lib/ser/modules/textops.so"

# Uncomment this if you want digest authentication
# mysql.so must be loaded !
loadmodule "/opt/ser-sems/lib/ser/modules/auth.so"
loadmodule "/opt/ser-sems/lib/ser/modules/auth_db.so"

# we want provisional replies in SEMS
modparam("tm", "pass_provisional_replies", 1)

# passes "P-App-Name" and
# "P-App-Param" headers with the INVITE
modparam("tm", "tw_append",
        "app_headers:hdr[P-App-Name];hdr[P-App-Param]")

# for DTMF in SIP INFO we need content-length, -type
# and body
modparam( "tm", "tw_append",
   "dtmf_info:hdr[Content-Length];hdr[Content-Type];msg[body]")

# ----------------- 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)

# -- registrar params --
modparam("registrar", "max_expires", 30)

# -- 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 (uri==myself) {

           if (method=="REGISTER") {

# Uncomment this if you want to use digest authentication
                       if (!www_authorize("ser.iptel.org", "subscriber")) {
                               www_challenge("ser.iptel.org", "0");
                               break;
                       };

                        save("location");
                        break;
                };

           # switch to statefull mode:
           if (!t_newtran()){
                sl_send_reply("500","could not create transaction");
                break;
           };

           if (method=="ACK"){
                # absorb ACKs
                break;
           };

           # prevent timeout on the other side:
           t_reply("100","Trying - just wait a minute !");

           
           if (method=="INVITE"){

                if(!t_write_unix("/tmp/sems_sock","conference")){
                        log("could not contact sems\n");
                        t_reply("500","could not contact media server");
                }
                
           } else if (method=="INFO") {
                if(!t_write_unix("/tmp/sems_sock","sems/dtmf_info")){
                        log("could not contact sems\n");
                        t_reply("500","could not contact media server");
                }

           } else { # no need for special appends
                if(!t_write_unix("/tmp/sems_sock","sems")){
                        log("could not contact sems\n");
                        t_reply("500","could not contact media server");        
                }
           }

           if (method=="BYE" || method=="CANCEL") {

                # Sems should already know which plug-in is handling that
                # call. "bye" is no plug-in name. It is a reserved name which
                # tells Sems to terminate the call.

                if(!t_write_unix("/tmp/sems_sock","bye")) {
                    t_reply("500","error contacting sems");
                };
           };
        };

        # 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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