[Serusers] SER + Voicemail - Need help completing

Shad Mortazavi Shad.Mortazavi at nexusmgmt.com
Wed Jun 2 08:03:23 CEST 2004


Dear All,

I could use a little help finalizing my proxy setup. I'm new to the ser
enviorment.

Here are the steps I have taken to try and get ser, serweb and vm to work;

1. Installed a copy of Fedora Core.
2. Downloaded a copy of 0.8.12 directory from the berlios ftp directory.
4. I have installed ser from the rpm's for Fedora/
4. I have configured and got working a copy of ser using ser.cfg example and
the guide on the iptel site.
5. I have configured SerWeb and I can login to the system as a user and as
admin. I have put my test users in the voicemail group.
6. I have downloaded sems from the 0.8.12/contribs and have compiled this. I
can do a service start sems and this loads. I assume you need sems for the
answer machine function?

>From what I can understand from the documentation I need to have two copies
of ser running, and to forward calls that are now answered to the voicemail
server. Could some one please give me a snippet? and tell me where to insert
this in my ser.cfg please?

1. I have installed ser.cfg and run my ser server on 5060. My x-ten lite can
call my Cisco 7960 and vice versa. The proxy works to forward calls to the
PSTN via my Asterisk box.

2. I have used the example of voicemail.cfg that comes with ser in the
tar.gz to create a voicemail.cfg. The only part that does not work is;


	if (len_gt( max_len )) {
		sl_send_reply("513", "Message too big");
		break;
	};

	In the debug I get;

	0(3305) parse error (48,14-21): syntax error
 	0(3305) parse error (48,22-23): bad arguments

I have rem'd this out, will deal with this bit later, although I would be
extremely grateful if anyone could tell me what the problem is?

So I can now run two copies of ser and everything checks out in the debug
mode;

Can someone post a copy of a ser.cfg with a forward to 2nd ser to get vm
working ? I have included a copy of my ser.cfg and voicemail.cfg. As always
I appreciate the help.

Here is a copy of my voicemail.cfg

#
# $Id: voicemail.cfg,v 1.5 2004/01/14 18:23:50 rco Exp $
#
# this script is configured for use as voicemail UAS; it processes
# INVITEs and BYEs and asks SEMS to record media via "vm"; in this
# script, all record-routing and other constructs known from proxy
# scripts are not present  -- it is a simple UAS 
#

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

debug=7		        # debug level (cmd line: -dddddddddd)
fork=no
log_stderror=yes 	# (cmd line: -E)
check_via=no	# (cmd. line: -v)
dns=no		# (cmd. line: -r)
rev_dns=no		# (cmd. line: -R)
port=5090
children=4
fifo="/tmp/vm_ser_fifo"

# ------------------ module loading ----------------------------------

loadmodule "/usr/lib/ser/modules/sl.so"
loadmodule "/usr/lib/ser/modules/tm.so"
loadmodule "/usr/lib/ser/modules/maxfwd.so"
loadmodule "/usr/lib/ser/modules/mysql.so"
loadmodule "/usr/lib/ser/modules/vm.so"
	    
# ----------------- setting module-specific parameters ---------------

modparam("vm", "db_url","mysql://@localhost/ser")

# -------------------------  request routing logic -------------------

# main routing logic

route{

	# initial sanity checks -- messages with
	# max_forwars==0, or excessively long requests
	if (!mf_process_maxfwd_header("10")) {
		sl_send_reply("483","Too Many Hops");
		break;
	};
	#if (len_gt( max_len )) {
	#	sl_send_reply("513", "Message too big");
	#	break;
	#};

	if (!uri==myself) {
		sl_send_reply("404", "not reponsible for host in r-uri");
		break;
	};


	# Voicemail specific configuration - begin

	if(method=="ACK" || method=="INVITE" || method=="BYE"){

		if (!t_newtran()) {
			log("could not create new transaction\n");
			sl_send_reply("500","could not create new
transaction");
			break;
		};

		t_reply("100","Trying -- just wait a minute !");
		if(method=="INVITE"){
			log("**************** vm start - begin
******************\n");
			if(!vm("/tmp/am_fifo","voicemail")){
				log("could not contact the answer
machine\n");
				t_reply("500","could not contact the answer
machine");
			};
			log("**************** vm start - end
******************\n");
		} else if(method=="BYE"){
			log("**************** vm end - begin
******************\n");
			if(!vm("/tmp/am_fifo","bye")){
				log("could not contact the answer
machine\n");
				t_reply("500","could not contact the answer
machine");
			};
			log("**************** vm end - end
******************\n");
		};
		break;
	};
	if (method=="CANCEL") {
		sl_send_reply("200", "cancels are junked here");
		break;
	};
	sl_send_reply("501", "method not understood here");
}



ser.cfg

#
# $Id: ser.cfg,v 1.21.4.1 2003/11/10 15:35:15 andrei Exp $
#
# simple quick-start config script
#

# ----------- 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=7
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/lib/ser/modules/mysql.so"

loadmodule "/usr/lib/ser/modules/sl.so"
loadmodule "/usr/lib/ser/modules/tm.so"
loadmodule "/usr/lib/ser/modules/rr.so"
loadmodule "/usr/lib/ser/modules/maxfwd.so"
loadmodule "/usr/lib/ser/modules/usrloc.so"
loadmodule "/usr/lib/ser/modules/registrar.so"

# Uncomment this if you want digest authentication

# mysql.so must be loaded !
loadmodule "/usr/lib/ser/modules/auth.so"
loadmodule "/usr/lib/ser/modules/auth_db.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")

# -- 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
alias="192.168.0.206"
alias="cosydser1"
alias="convergenceone.com"

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 request URI is numerical, forward the request to PSTN
gateway...
	if (uri=~"^sip:[0-9]+ at convergenceone.com") { # match using a regular
expression
	forward( 192.168.0.241, 5060 );
	break;
	};
	# if request URI is numerical, forward the request to PSTN
gateway...
	if (uri=~"^sip:[0-9]+ at 192.168.0.206") { # match using a regular
expression
	forward( 192.168.0.241, 5060 );
	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") {

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

			save("location");
			break;
		};
	       lookup("aliases");
		# native SIP destinations are handled using our USRLOC DB
		if (!lookup("location")) {
			sl_send_reply("404", "Not Found");
			break;
		};
	};
	# 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();
	};

}

Thanks and Regards

Shad Mortazavi
---------------------------------------------------
Nexus Technical Manager
n|m Nexus Management Inc
Sydney

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