sr-users March 2006

sr-users@lists.kamailio.org

223 participants
506 discussions

[Serusers] Proposal for new features
by Arek Bekiersz 01 Mar '06

01 Mar '06

Hi, As my current work may be interesting for the rest, I wonder if you will find those new features useful. Every opinion is appreciated. Some time ago I commited a small 'ldap' module, all-in-one. As there was some (small :-) ) feedback from people using this module, I propose to split it into following modules: 1) auth_ldap: set of authentication routines, working with standard or user-defined Ldap schemas 2) group_ldap: group membership module based on Ldap backend 3) uri_ldap: uri mangling module, based on ldap backend 4) avp_ldap: (new) module for operating on AV-pairs from Ldap, working with both user-defined or standard dbase schemas Later, it is possible to write small SER 'soap' modules, using one of freely available C/C++ soap libraries. Those modules will perform various tasks: 5) soap_ipdr: module for reporting service usage information (billing) in XML, to be used by external billing systems. Information will include all call attempts (also failed ones like CC,CAD,UCN,UCI and possibly CID completion codes from IPDR's VoIP service definition). It will return following XML documents (using SOAP as transport): * IPDRDoc - usage for specific user (user@domain) * IPDRSettlementDoc - usage for domain NOTE: that using IPDRSettlementDoc for domain is based on model where our cooperants have one virtual SIP domain. it is then easiest way to make settlement using IPDRSettlementDoc for one domain. 6) soap_parlayx: Such module would act as a gateway between SER and external Parlay X Web Services software. When called, this module will analyze SIP request and forward it to external Parlay X software. That software will fulfill request and return ReturnValue, with specific Action. Then SER soap_parlayx module will perform desired action on SIP request. More on Parlay X Web services v.2.0 can be found at: http://www.parlay.org/en/specifications/ NOTE: This behaviour mimics a hypothetic SIP-CGI gateway, but this time it is a SIP-SOAP gateway. EXAMPLE: could be the HandleBusy operation from "Part 3: Call Notification" of Parlay X Web services: 1. SIP encounters "486 Busy" situation 2. SER Script writer calls parlayx_handle(HandleBusy) function from soap_parlayx module 3. soap_parlayx module calls external software, sending handleBusyRequest, containing CallingParty, CalledParty 4. external software returns handleBusyResponse with Action structure, containing ActionToPerform (like 'route' on not route), RoutingAddress, Charging (charge for using of service) 5. SER soap_parlayx module modifies SIP request and forwards it to voicemail_SIP location. In addition it stores relevant info in IPDR data recorder for later use. External Parlay X software will be basically a SOAP engine, it can be written in any language. Unlike a soap_parlayx module itself, that engine will not be a part of SER. 7) SIP SOAP initiative Seems that IP world is slowly evolving in direction of service enabled architecture, usually based on SOAP/UDDI standards. For this reason maybe it is worth to initiate work on SIP SOAP draft standard? It would basically mimic existing IETF SIP CGI draft standard, but with far greater opportunities for creating new services, that SOAP standard brings. It will beautifuly fulfil current work in progress in my company and an European project, codename VISP (Virtual Internet Service Provider), that we are coordinator of. Project is focusing on enabling smooth company-to-company interoperability in mutual creation of new services in fast changing IP world. Including VoIP. More information can be found on Web site: http://www.visp-project.org/ -- Regards, Arek Bekiersz

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[Users] Using t_reply()
by Douglas Garstang 01 Mar '06

01 Mar '06

Why can't I do this??? Arrgh! I want to be able to call onreply_route[35] when we get a reply. So, not surprisingly, in onreply_route[35] I want to see what sort of reply I got, and then send ANOTHER reply back to the originater of the message telling them something was wrong. Why can't I use t_reply in a reply_route? What's the most likely away around this, because I sure must be missing something fundamental. route[10] { t_on_failure("11"); t_on_reply("35"); rewritehostport("pbx1-mgt0.ipt.oneeighty.com:5060"); if ( !t_relay() ) { xlog ("L_INFO","t_relay() returned error"); } else { xlog ("L_INFO","t_relay() returned ok"); } } onreply_route[35] { xlog ("L_INFO","Got some sort of reply"); if (t_check_status("603")) { xlog ("L_INFO","got a decline"); t_reply("603","Declined"); } return; }

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[Users] Checking reply status
by Douglas Garstang 01 Mar '06

01 Mar '06

How can I check for SIP responses, say 'Decline' for example? Do I have to use t_check_status()? I tried but I think it wants me to create a transaction first, and seeing as though the OpenSER docs are so bad, I don't know how to do this. Is there a stateless way to check for a SIP response? In general, it seems as though you can't check SIP response messages. There's the 'if method = <something>' approach, say for example 'if method == INVITE', but I have not seen any examples of how you can check for SIP response messages just as easy in a stateless fashion. Say, something like 'if response == DECLINE' or 'if response == 'Not Found'. How can this be done??? Thanks, Doug.

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[Users] TLS DH cipher problem
by Tóth Péter 01 Mar '06

01 Mar '06

Helo! I find a list, where the same problem occured with EDH-RSA-DES-CBC-SHA cipher... http://marc.theaimsgroup.com/?l=openssl-users&m=109844857431850&w=2 The offered solution is the following: "You need to include a call to SSL_CTX_set_tmp_dh() which the DH parameters too." How can I include the above? Thans: Tóth Péter

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[Users] How about this..
by Helge Waastad 01 Mar '06

01 Mar '06

Today, just some refelctions... A colleague of mine, early today, started getting spam messages on his Skype account, and this got me thinking: What about spamfiltering on proxy level? Has anyone tried to execute a spamassassin script on, for instance, a MESSAGE and either forwarded or discarding the call? I know this would have a deep impact on processing time, but anyway, I thought this was an interesting scenario.. br hw -- Helge Waastad Senior Konsulent Systemavdelingen Smartnet

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[Serusers] Saving historical registration information
by Alistair Cunningham 01 Mar '06

01 Mar '06

We've been asked by a customer to keep the last registration information, even after expiry. They want to be able to look at the database and see where and when a phone last registered from, even if it was months ago. Only the last registration is important; they don't care about older ones. This could be done using various methods such as a trigger in the database to update another table any time location is written to, but this is ugly. Does any one know of a simple way to do it, preferably in ser.cfg? -- Alistair Cunningham, Integrics Ltd, +44 20 799 39 799 sip:acunningham@integrics.com http://integrics.com/

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[Serusers] SDP of 180
by Ever Zalazar 01 Mar '06

01 Mar '06

Hi people. I want to know if it's possible to configure SER to modify the SDP of the 180. Best Regards Ever Zalazar

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[Users] Decision to use OpenSER - SER
by Gerry 01 Mar '06

01 Mar '06

(I hope the subject is appropriate here and I am not starting a religious war. If the subject is inappropriate please feel to delete the message admins.thanks) We are about to make the decision to use SER or OpenSER. Are there any strong reasons why one should avoid using one or the other ? My general impression is that OpenSER tries to be more aggressive in implementing new features. However the questions regarding stability and commitment by users to the fork linger of course in my mind too. I would be most grateful if some could provide me some arguments regarding the matter. TIA for your input. Gerry

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[Serusers] Ser + SEMS + set time.
by tstafin＠op.pl 01 Mar '06

01 Mar '06

Hello everyone! I'd like to configured ser that for example from 7 a.m. to 15 p.m. every call to uri 000 is forward to sems (announcement) and play some wav. I try to find module to do this but i'm stuck. Can anyone help me. Sorry for my bad english. Thanks for any help. Best regards Swaper

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RE: [Serusers] Ser + SEMS + set time.
by pankaj.munjal＠wipro.com 01 Mar '06

01 Mar '06

Hi Swaper, You can use the semstalkflite module of sems. you'll need to install flite (a speech synthesizer) for the same. The way this module works is as follows: You have to send a Invite to sems with the text that you want to be played back, as a Request URI Cheers, Pankaj. -----Original Message----- From: serusers-bounces(a)iptel.org [mailto:serusers-bounces@lists.iptel.org] On Behalf Of tstafin(a)op.pl Sent: Wednesday, March 01, 2006 1:51 PM To: serusers(a)lists.iptel.org Subject: [Serusers] Ser + SEMS + set time. Hello everyone! I'd like to configured ser that for example from 7 a.m. to 15 p.m. every call to uri 000 is forward to sems (announcement) and play some wav. I try to find module to do this but i'm stuck. Can anyone help me. Sorry for my bad english. Thanks for any help. Best regards Swaper _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com

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sr-users March 2006