February 2014 - sr-users

reg event support in subscribe
by Premchandiran 05 Feb '14

05 Feb '14

Hi All, May I know whether kamailio supports event header with reg (EVENT:reg) (rfc 3680) , if kamailio supports may I know the module whether it is in presence or presence_xml or any other module? Regards, Prem Chandiran M

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GSM PDU Decoding
by Ramya Ramamurthy 04 Feb '14

04 Feb '14

Dear SR-Users, I am using kamailio for decoding of SIP Packets with Message Body as a GSM PDU. But I am not sure of the modules which i need to use for the same. Some help on this would be greatly appreciated. Thanks, ~Ramya.

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Change the name of the location table for the usrloc module
by Alejandro Recarey 04 Feb '14

04 Feb '14

Hi everybody, I have been trying to setup a new installation of kamailio, and I need the user location table to have a specific name. This will allow two kamailio servers to use the same database for their registry information. I cannot find any modparam in the documentation that allows me to set the table name for the usrloc. Is there any way to do this? It seems like an oversight, every other module I have been able to change the table name without a problem. Thank you, Alex

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Cluster: check/mark servers in cluster
by Victor V. Kustov 04 Feb '14

04 Feb '14

Hi, all! I had in config: #!define KAMDB "cluster://postcash" loadmodule "db_cluster.so" modparam("db_cluster", "connection","con1=>postgres://user1:password1@host1/kamailio") modparam("db_cluster", "connection","con2=>postgres://user2:password2@host2/kamailio") modparam("db_cluster", "cluster", "postcash=>con1=9s8p;con2=9s8p") modparam("usrloc", "db_url", KAMDB) and save registered user's locations in cluster after some server's restarts second base has empty set. How can I see server's list with status? How can I set second server worked? (I check - all OK with it) -- WBR, Victor JID: coyote(a)bks.tv JID: coyote(a)bryansktel.ru I use FREE operation system: 3.12.9-calculate GNU/Linux

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Hello from newbie
by Alex Lake 04 Feb '14

04 Feb '14

Just trying to get to grips with Kamailio and thought I'd say hello to you all... Not sure if this is of any interest, but I've found it quite hard to get into Kamailio compared to (say) Freeswitch. This is not meant as criticism at all, but if you're looking to make it easier, I may be able to help! Installation was more or less OK, although a couple of slightly blind alleys and lack of concrete examples of config files. I believe I have a working server, but where to go next has left me a little stumped! What I'm trying to do is have a SIP load-balancer such that I can have a set of Freeswitch servers that can have traffic routed to them on a controlled basis, allowing me to point certain accounts at certain servers and take individual servers out of service for upgrade etc. I think this is SIP server redirection. If there was an example of how to do it - eg. what files need to be changed, any database entries, etc. that would be most useful. Unfortunately, all my Googling/list searching so far has only come up with questions that were either badly worded or not answered. Happy to turn anything I come up with into a beginner-friendly case-study.

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Asterisk re-INVITE race condition, error 500.
by David K 04 Feb '14

04 Feb '14

Hello all, So I have three machines, we don't care about audio for this problem, so everything I mention here is SIP related. Freeswitch <--> Kamailio 3.3.2 <--> Asterisk 1. Asterisk sends an INVITE to Freeswitch through the Kamailio proxy. 2. Kamailio replies 100 Trying and forwards to Freeswitch 3. Freeswitch replies 100 Trying 4. Freeswitch replies 180 Ringing to Kamailio 5. Kamailio routes the answer to Asterisk 6. Freeswitch replies 200 OK to Kamailio 7. Kamailio replies 200 OK to Asterisk 8. Asterisk replies ACK to Kamailio 9. Asterisk sends a re-INVITE to Freeswitch through Kamailio 10. Kamailio routes the re-INVITE to freeswitch 11. Kamailio routes the ACK to freeswitch. 12. Freeswitch replies 500 Server error because it got a re-INVITE before the ACK. So, my problem is that Kamailio seems to process my re-INVITE more quickly than the ACK. So Freeswitch replies an error because it got the re-INVITE before the ACK. So my "solution" is to add a usleep(20); for re-INVITEs on Kamailio, but I think this is a lousy solution. Has anyone here had to deal with problems where Kamailio routes a re-INVITE faster than an ACK causing endpoints to return error messages? Has anyone had to deal with a similar issue? Thanks, David

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Kamailio World 2014 - New speakers and presentations
by Daniel-Constantin Mierla 04 Feb '14

04 Feb '14

Slightly less than two months to the start of Kamailio World 2014 <http://www.kamailioworld.com> [1] the organization of the event is getting accelerated. We received plenty of interesting proposals so far, we expect to end the Call for Speakers very soon, earlier than previously announced. If you have plans to submit, you should really hurry up. The profiles of about 20 speakers have been published in Speakers page <http://conference.kamailio.com/k02/speakers/> [2], few others that were accepted already will be added soon. Details for about 15 sessions during the conference days (April 3-4, 2014) are available in the Schedule page <http://conference.kamailio.com/k02/schedule/> [3]. The technical workshop on the 2nd of April is getting to the final shape as well. Similar to last year, expect several exhibition spots where various companies will present their services or products during the conference days. In the evening of 3rd of April it will be the cocktail party, a relaxing event for social networking around good food and drinks. We are grateful to our sponsors [4], they are making possible this event: FhG Fokus <http://www.fokus.fraunhofer.de/en/fokus/index.html>, Asipto <http://www.asipto.com>, Sipwise <http://www.sipwise.com>, Sipgate <http://www.sipgate.de>, IT Center <http://www.itcenter.com.pt/> and NG Voice <http://www.ng-voice.com/>. Should you consider sponsoring, contact us via email at <conference [at] kamailio.com>**and we can present you more details. The event take place again at the very city center of Berlin, next to Island of Museums and Alexanderplatz. The number of seats is limited and they can fill up very quickly, if you plan to attend, do not delay the registration – see more details in Registration page <http://conference.kamailio.com/k02/registration/> [5]. /Looking forward to meeting many of you in Berlin! / Daniel/ / [1] - http://conference.kamailio.com [2] - http://conference.kamailio.com/k02/speakers/ [3] - http://conference.kamailio.com/k02/schedule/ [4] - http://conference.kamailio.com/k02/sponsors/ [5] - http://conference.kamailio.com/k02/registration/ -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

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Proxied authentication
by Pete Ashdown 04 Feb '14

04 Feb '14

I'm having trouble divining the proper way to authenticate calls to remote destinations that require it. I'm hoping someone can clear it up. Freeswitch client server A is authenticated to Kamailio. Freeswitch test server B is authenticated to Kamailio. Calls from A -> Kamailio -> B fail with rejection of the authentication information that A is using to Kamailio. As far as I understand, I need to rewrite the authentication information with UAC? However, UAC's uacreg table seems to tie remote users to remote destinations, when all I want to do is authenticate all calls routed to the destination regardless of what the user or the source is. Am I using the wrong module?

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Re: [SR-Users] Regd. MAX_LDG_LOCKS
by Shankar 04 Feb '14

04 Feb '14

Hi, Can someone clarify here please? Regards, Shankar From: Shankar [mailto:shankar.rk@plintron.com] Sent: Monday, February 03, 2014 10:53 AM To: 'SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List' Subject: Regd. MAX_LDG_LOCKS Hello, Can anyone brief about MAX_LDG_LOCKS in dlg_hash.c? Should I increase the value of MAX_LDG_LOCKS (hardcoded to 2048) if the hash size is increased? Regards, Shankar

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Media-proxy Query
by Nandini madhu 04 Feb '14

04 Feb '14

Dear All, Greetings, I have configured Kamailio (4.0.3) with mediaproxy server, with this set-up audio/video calls are going good and hence NAT issue has solved. I have used two soft clients: 1) IMSDroid 2) Bria. But i have a query about media-proxy statistics i.e in the syslog, the info about media-proxy activity is shown as below: *Case 1*: when Call between two IMSDroid clients. caller_codec : 'Unknown(73)' callee_codec : 'Unknown(73)' callee_ua : 'unknown agent'. *Case 2* : When call between two Bria clients. 'callee_ua': 'unknown agent'. (Calls using Bria clients media-proxy's syslog shows Audio codec names, but using IMSdroid clients it is showing 'Unknown' for Audio codec names ). Find the attachment below for the full syslog about the mentioned unknown behaviour. And also find my kamailio.cfg file. And also logging in the syslog as shown like RTP: Unknown , RTCP: Unknown. In this context, there is a jitter in audio calls and pixelled video sometimes, So is there any wrong with the above mentioned "unknown' factor in this problem of jitter/pixelled audio/video calls ? (AFAIK these payload type 73 (i.e 72-76) is reserved for RTCP conflict avoidance. right? ) What could be the problem for this 'Unknown' issue? How can i solve this issue ? Anything can be done in kamailio script? And how these RTCP payload types (72-76) plays a role in audio/video calls? Any suggestions will greatly help. please help me in clarifying these issues. Thanks in advance. Regards, Nandini

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