December 2006 - sr-users

Re: [Serusers] Problem with MTU size in SER with MIPv6.
by Jose Angel Calvo 21 Dec '06

21 Dec '06

I'm sorry for the delay, but we had to do a deliverable in this date, and it was imposible to answer before. >Could you try again after runing: >ulimit -c unlimited # you need bash for this >ser -f ser.cfg -w /tmp/ The parameter "unlimited" already was in this node, so I think this is not the problem. The scenario used in our test is the following: - There are two user terminals that are communicated by SIP Communicator program. The INVITE message (problematic paquet) travels through the nodes until it arrive at the Proxy node. In this node is the problem with the core shown in my previous message. We have MIPv6 in our scenario. In our case, we use mipv6-2.0.2 from http://www.mobile-ipv6.org/ . We have ubuntu with kernel 2.6.16.24 Next, i'll show you the configuration file in the Proxy node: ****************************************************************** # # P-CSCF # # ----------- global configuration parameters ------------------------ check_via=no # (cmd. line: -v) dns=yes # (cmd. line: -r) rev_dns=yes # (cmd. line: -R) fifo="/tmp/ser_fifo" listen="pcscf" # ------------------ module loading ---------------------------------- 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/textops.so" loadmodule "/usr/lib/ser/modules/xlog.so" # ----------------- setting module-specific parameters --------------- # -- 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; }; if (method=="REGISTER") { # Append the Path header # FIXME: "Require" and "Supported" issues append_hf("Path: <sip:term@pcscf.domainA.ammi.dit.upm.es;lr>\r\n"); append_hf("Require: path\r\n"); }; # ----------------------------------------------------------------- # Loose Route Section # ----------------------------------------------------------------- if (method != "REGISTER") { record_route(); }; if (loose_route()) { route(1); break; }; # forward to current uri now; use stateful forwarding; that # works reliably even if we forward from TCP to UDP route(1); } route[1] { # ----------------------------------------------------------------- # Default Message Handler # ----------------------------------------------------------------- if (!t_relay()) { sl_reply_error(); }; } **************************************************************** In the next message i'll show the packet INVITE that produces the error becuase. Otherwise, the message would be very big (>40 KB) and it would not be shown. Thanks. ______________________________________________ LLama Gratis a cualquier PC del Mundo. Llamadas a fijos y móviles desde 1 céntimo por minuto. http://es.voice.yahoo.com

1 0

[Serusers] editing the location table.
by Natambu Obleton 21 Dec '06

21 Dec '06

I want to edit the mysql location table myself, but it seems that SER doesn't read the table everytime a call is received. How can I make it refresh this table? Right now if I stop and restart SER then it will load my new entries. Natambu Obleton Network Engineer FastTrack Communications nobleton(a)fasttrackcomm.net (970) 247-3366 office (970) 247-2426 fax

3 3

[Serusers] Maximum Time of the call
by Digital Tuffy 21 Dec '06

21 Dec '06

How can we restrict a user for the maximum time allowed for a call. _________________________________________________________________ Get up-to-date with movies, music and TV. Its happening on MSN Entertainment http://content.msn.co.in/Entertainment/Default

1 0

RE: [Serusers] editing the location table.
by Digital Tuffy 21 Dec '06

21 Dec '06

use serctl ul command only which will update location table as well as DATA in Memory which is in the form of linked lists etc. >From: "Natambu Obleton" <nobleton(a)fasttrackcomm.net> >To: <serusers(a)iptel.org> >Subject: [Serusers] editing the location table. >Date: Wed, 20 Dec 2006 11:13:01 -0700 > >I want to edit the mysql location table myself, but it seems that SER >doesn't read the table everytime a call is received. How can I make it >refresh this table? Right now if I stop and restart SER then it will load >my >new entries. > > > >Natambu Obleton > >Network Engineer > >FastTrack Communications > >nobleton(a)fasttrackcomm.net > >(970) 247-3366 office > >(970) 247-2426 fax > > > > > >_______________________________________________ >Serusers mailing list >Serusers(a)lists.iptel.org >http://lists.iptel.org/mailman/listinfo/serusers _________________________________________________________________ Want to know what your favourite stars are up to? Catch the latest gossip in Bollywood on MSN Entertainment! http://content.msn.co.in/Entertainment/Default

1 0

Re: [Users] Delayed signalling?
by Jiri Kuthan 20 Dec '06

20 Dec '06

At 16:03 14/12/2006, samuel wrote: >It might be due to a DNS query....whenver a request has to be >forwarded to a domain, openSER makes a DNS query to resolv the IP. >During this operation, the child processing the request will not >answer to further incoming messages. Hard to say without more input what the cause may be. Indeed common suspects are DNS (or any other blocking operation, such as dataabse) or timers, but again it is hard to say without more input. If it is DNS or TCP-based blocking, it may be worthwhile trying genuine SER/ottendorf which is having IP blacklisting and DNS cachine in there -- this is indeed something which has been pressing us for a while. If it is timer system, then SER should address it it (it must be the latest ottendorf version though). If it is database that blocks itself and SER consequently too, you have to look at the database. (Even if SER would do something about it, it could do hardly better then sending a negative reply "DB unavailable"). -jiri >it also can be happening due to a spiral loop that stays on the server. > >Without further information (confg,logs) it's hard to tell which is >the reason... > >hope it helps, >Samuel. > >without more information > >2006/12/14, Max Gregorian <gregorian442(a)googlemail.com>: >>Hi all, >> >>Just wondering if anyone else has had this problem. I have noticed while >>tracing on my OpenSER server, that every now and then the server receives a >>packet which it does to respond to immediately, resulting in a string of >>packets being sent to the server and then the server responding a few >>seconds later. This does not happen all the time, just say maybe once or >>twice every hour. The rest of the time the signaling is correct and >>responses follow request packets in the correct order. >> >>What I am trying to figure out is whether this is a load traffic issue (i.e. >>can the server not handle too much load), and if so is it OpenSER or the >>network or the server in general? I have run diagnostics on the servers and >>there is nothing wrong with the hardware. >> >>On the other hand Could this be related to any timer issues? I remember >>there was mention of timers in SER but are there any default timer settings >>that can be tweaked? >> >>Thanks in advance for any response. >> >> >>_______________________________________________ >>Users mailing list >>Users(a)openser.org >>http://openser.org/cgi-bin/mailman/listinfo/users >> >> > >_______________________________________________ >Users mailing list >Users(a)openser.org >http://openser.org/cgi-bin/mailman/listinfo/users -- Jiri Kuthan http://iptel.org/~jiri/

2 2

[Users] OT: network debugging
by Klaus Darilion 20 Dec '06

20 Dec '06

Hi! As SIP debugging often includes low-level network debugging I think this tutorial can give some valuable inputs how to debug network problems. http://penguin-it.co.il/presentations/BrainShare2006/Troubleshooting%20LAN%… regards klaus -- Klaus Darilion nic.at

5 6

[Serusers] Recommend ATA adaptor ?
by johnk＠koreanet.us 20 Dec '06

20 Dec '06

Hi, Can someone recommend ATA models that work easy with Openser, based on experience? I am currently using Sipura SPA3000 and PAP2 which are highly configurable but at the same time, need much works with trial and error fashion to get them work with Openser, Freeradius, Mediaproxy and CDRTool combination. Especially, I am not quite sure if these are handling "VIA" header correctly. Because setting up Outbound proxy was the only solution I found to get these units send "BYE" to the server, otherwise it will send "BYE" directly to PSTN gateway, resulting forward_reply error, killing a child process and mediaproxy never had a chance to mark "stop time" for acc. Can anyone suggest ATAs that imposes least burden of configuration to work with the setting above? Thanks mush in advance. John K.

3 2

[Users] New OpenSER Module: The SNMPStats Module
by jmagder 20 Dec '06

20 Dec '06

Hello everybody, I recently submitted a new module known as the "SNMPStats module" to the OpenSER CVS head. The SNMPStats module provides an SNMP management interface to OpenSER, and is intended for those who want better manageability of their systems. The module provides general SNMP queryable scalar statistics (useful for discovering system trends), table representations of more complicated data such as user and contact information, and alarm monitoring capabilities. The scalar statistics are very useful for discovering trends in the ways your systems are used. For example, using a tool such as mrtg or Cacti, you can collect SNMP based information over long periods of time, and automatically graph statistics. Some examples of good graphs would be: - The number of messages received each hour of the day. (Using the openserSIPSummaryInRequests scalar) - The number of active dialogs at any time of the day. (Using the openserCurNumDialogs scalar) These graphs may reveal that most SIP traffic happens between say, 14:00-16:00, and that perhaps it would be beneficial to change rate plans based on this data. SNMPStats alarm monitoring provides for a useful tool in maintaining system stability. Currently there are two alarms implemented: - Dialog Alarms: If the number of active dialogs passes a certain threshold, then a message can be sent to a network operation center. The idea is that an administrator should me made aware a system is becoming too heavily loaded before a failure occurs. - Message Queue Alarms: If the number of bytes waiting to be consumed by an OpenSER instance exceeds a threshold, then a message can be sent to a network operation center. The idea is to find out why the system is not able to handle the load, and to take corrective actions before a failure occurs. In order to get the SNMPStats module up and running, you'll be required to do some extra configuration steps that at this time are not automated. The full installation procedure is documented on the OpenSER web site at: http://www.openser.org/docs/modules/1.2.x/SNMPStats.html Since this is the first time the SNMPStats module will be tried outside of my work at SOMA Networks, there may be a few rough edges I've overlooked. I welcome all to take out their sand paper help me polish the module. All suggestions and criticisms are always welcome. Good luck all, and cheers! - Jeffrey Magder - SOMA Networks Inc.

3 3

[Users] Trying to understand difference between forward() and t_relay()
by Juan Carlos Castro y Castro 20 Dec '06

20 Dec '06

I was googling for that and found a reply in the SER list that links to a page that doesn't exist anymore: http://lists.iptel.org/pipermail/serusers/2004-October/011924.html My searchs have been unsuccesful so far. Can anyone give me a pointer? Thanks, Juan

2 2

[Users] postgres
by Mark Price 20 Dec '06

20 Dec '06

Hi, What is the best way to use postgres with openser? Is postgres a viable option? I ask, because the install script appears to be broken. If I am able to fix it well enough create the necessary tables, will it be fit for use? As an example, there are several errors in the openser_postgres.sh that comes with openser 1.1 In particular, there are instances where the following is done: create table a ( field type, index a_idx(field) ); However, postgres requires syntax like this: create table a ( field type ); create index a_idx on a (field); Thanks.

2 1