sr-users October 2003

sr-users@lists.kamailio.org

105 participants
230 discussions

by Maxim Sobolev

Folks, I've just updated rtpproxy tarball available at http://www.portaone.com/~sobomax/rtpproxy.tar to include ability to alter location of the command socket (userful if there are multiple SERs running on the same machine, appropriate patches for nathelper were commited into trunk some time ago), as well as an ability to set specific TOS for RTP packets (default is now 0xa0), which can be used to do QoS. Regards, Maxim

21 years, 1 month

[Serusers] Need to modify username

by Mike Dehn

I am in the process of establishing a SIP-based system using SER which will allow my end users to connect to each other and to dial out to the pstn using a SIP/pstn gateway run by a provider downstream. Some of the users on my system are consultants who work on several projects at once. They would like to prefix the numbers they dial with their own arbitrary 4-digit project codes for different calls and have the accounting I send them show the project code they used for each call. Since my accounting is done downstream at the pstn gateway, and it shows the username for each call, I would like to change the username on each of the calls going out of my SER to include the project code. Then no changes would need to be made in the billing software and each call will be easy to identify as to user and project. Of course the project code would get stripped off so that just the correct uri is sent, and I have figured out how to do that using the strip function. But I am new to SER and just figuring my way through this, so I need a bit of help with the rest of it. Here is an example of what I want to set up. If user Mike wishes to call 1-111-1111 and wants to code it to project 1234, he would dial: *123411111111(a)wherever.com and the outgoing uri would be just: 11111111(a)wherever.com (this is done using strip) and the outgoing username would be: mike1234 Note: the asterisk just indicates that a project code follows. Not all users will want this feature and calls without an asterisk will be handled differently. If I can do the last part (change the outgoing username to mike1234) I'll have it cracked. It would be best to do this within SER, but I don't see a way to do it. If there is a way, please let me know. So then it seems to me that the best thing might be to use the exec_dst command to pass a set of commands to the shell would cause characters 2 through 5 of $SIP_ORURI to be appended to the end of $SIP_USER. So something like: EXPORT $SIP_USER=(characters 2-5 of $SIP_ORURI) ...... Obviously my bash-knowledge needs a bit of work here ;-) If this would work, can someone tell me the shell commands to use? Alternatively, what about calling a small executable that reads the appropriate environment variables and changes the value of $SIP_USER before returning to SER? I had at first thought this might be the simplest way to do it, but now I understand that when a program modifies an environment variable the variable returns to its original value when the child process ends. If that is correct, then SER would never see the change. Note that I'm aware that it would be easier to do this accounting on my own SER system, where I have access to the original user name. However, since the pstn gateway at the next hop does the official accounting and billing, I want the billing it produces to include the project codes, and I think the easiest way to do this is for me to modify the outgoing username. I have been working away at this, starting from zero knowledge of Linux, but I've come about as far as I can get. I would appreciate any advice. Thanks, Mike

21 years, 1 month

Re: [Serusers] SER: windows messenger cannot deliver text messages...

by Jiri Kuthan

That's caused by new Messenger's _proprietary_ session model -- messaging session are initiated and expected to be initiated with INVITE. There is a hint how to avoid the 487 in our FAQ http://iptel.org/~faqomatic/fom-serve/cache/64.html Nevertheless, it only softens some scenarios, as said the core problem is the whole session model is violently proprietary. From standard compliance (and related capability to talk to anything else then Messenger itself), 4.7 was much better. -jiri At 10:05 PM 10/17/2003, David Quenzler wrote: >I've seen similar postings before, but could not find the resolution. > >SER 0.8.11 >Windows Messenger 5.0.0381 > >Connecting two clients to the SER machine... both show online in their >messenger windows. > >Testcase >SER: 'ngrep -n 5060 user1' >USER2: attempts IM 'hello world' to USER1 > >Flow control as seen with ngrep > >User2 SER User1 >1> invite > 100 <2 > 3> invite > bye <4 > bye <5 >6> 481 > 7> 481 > 200 <8 > 200 <9 >10> ack > 11> ack >12> message > 13> message > 481 <14 > 481 <15 > >Has anyone seen this before? > >- Dave > >_______________________________________________ >Serusers mailing list >serusers(a)lists.iptel.org >http://lists.iptel.org/mailman/listinfo/serusers -- Jiri Kuthan http://iptel.org/~jiri/

21 years, 1 month

[Serusers] SER: windows messenger cannot deliver text messages...

by David Quenzler

I've seen similar postings before, but could not find the resolution. SER 0.8.11 Windows Messenger 5.0.0381 Connecting two clients to the SER machine... both show online in their messenger windows. Testcase SER: 'ngrep -n 5060 user1' USER2: attempts IM 'hello world' to USER1 Flow control as seen with ngrep User2 SER User1 1> invite 100 <2 3> invite bye <4 bye <5 6> 481 7> 481 200 <8 200 <9 10> ack 11> ack 12> message 13> message 481 <14 481 <15 Has anyone seen this before? - Dave

21 years, 1 month

[Serusers] Outbound Proxy

by dhiraj.2.bhuyan＠bt.com

Hello All, Can anyone tell me whether the following setup can be achieved with SER? [UA] <-------> [Gateway/NAT/SER Proxy] <--------> [SER Registrar] 1. The UA is behind a NAT gateway. 2. Whenever the SER Proxy on the NAT Gateway receives a registration request from a UA ( tester@gateway )on the private network, it sends a registration request ( tester@ser-registrar ) to the "SER Registrar" on behalf of the UA. This means the SER Proxy should be able to translate a SIP URI on the public side ( tester@ser-registrar ) to one on the private side ( tester@gateway ) and forward it to the right machine. Any feedback will be greatly appreciated. Regards, Dhiraj Bhuyan Security Research Engineer BTexact Tel: +44 1473 643932 Mob: +44 7753231984 Email: dhiraj.2.bhuyan(a)bt.com

21 years, 1 month

[Serusers] Too many hops...

by Ajeet

Hi, I have installed a ser on my one linux-machine in a LAN which also has an other Linux-machine running DNS server. SIP server has a domain like, sip.ur_net.lab and its ip address is 10.3.0.1 i can resolve the sip.ur_net.lab to 10.3.0.1 on the this sip machine by running command dig sip.ur_net.lab at the command line. Now i have connected two windows hosts to same network and installed SIP user agents on these windows hosts. now in client when i use my sip domain and sip proxy as sip.ur_net.lab, the server does not register me. Also on windows hosts i can resolve sip.ur_net.lab to 10.3.0.1 by using ping sip.ur_net.lab. But in windows host when i use 10.3.0.1 as my sip domain and sip proxy then all things go ok and we can talk through sip user agents. Do i have to add some special entry in DNS server for username(a)sip.ur_net.lab to resolve to username(a)10.3.0.1 or any other suggestion. Thanks. -ajeet. -- Ajeet ajeetnk(a)fastmail.fm -- http://www.fastmail.fm - Accessible with your email software or over the web

21 years, 1 month

RE: [Serusers] Outbound Proxy

by dhiraj.2.bhuyan＠bt.com

Thanks for the reply. A quick google search and I found one B2BUA from http://www.vovida.org/applications/downloads/b2bua/ Is there any other open source B2BUA for Linux/Unix platform? Thanks, Dhiraj -----Original Message----- From: Jan Janak [mailto:jan@iptel.org] Sent: 17 October 2003 15:25 To: Bhuyan,D,Dhiraj,XVR3 R Cc: serusers(a)lists.iptel.org Subject: Re: [Serusers] Outbound Proxy Hello, no, it is not possible because you can't change To and From header fields in the message and also the gateway ser can't respond to digest challenge from the registrar because it doesn't know user's credentials. You will need a B2BUA for this kind of job. Jan. On 17-10 14:43, dhiraj.2.bhuyan(a)bt.com wrote: > Hello All, > > Can anyone tell me whether the following setup can be achieved with SER? > > > [UA] <-------> [Gateway/NAT/SER Proxy] <--------> [SER Registrar] > > > 1. The UA is behind a NAT gateway. > 2. Whenever the SER Proxy on the NAT Gateway receives a registration request from a UA ( tester@gateway )on the private network, it sends a registration request ( tester@ser-registrar ) to the "SER Registrar" on behalf of the UA. This means the SER Proxy should be able to translate a SIP URI on the public side ( tester@ser-registrar ) to one on the private side ( tester@gateway ) and forward it to the right machine. > > > Any feedback will be greatly appreciated. > > Regards, > > Dhiraj Bhuyan > Security Research Engineer > BTexact > > Tel: +44 1473 643932 > Mob: +44 7753231984 > Email: dhiraj.2.bhuyan(a)bt.com > > _______________________________________________ > Serusers mailing list > serusers(a)lists.iptel.org > http://lists.iptel.org/mailman/listinfo/serusers

21 years, 1 month

AW: [Serusers] Finally, ser & vm working ok

by Harry Behrens

Dear Pablo, we are also setting up VM/SER, so pls. do send the configs if not to the list at least to me. Regards, Harry Dr. Harry Behrens Projektleitung BIB3R DAI Labor - Technische Universität Berlin Sekretariat GOR 1-1, Franklinstrasse 28/29, 10587 Berlin Fon: +49 30 314 23383 Fax: +49 30 314 21799 Email: harry.behrens(a)dai-labor.de http://www.dai-labor.de > -----Ursprüngliche Nachricht----- > Von: Pablo Murillo [mailto:ser@rednet.com.ar] > Gesendet: Freitag, 17. Oktober 2003 16:57 > An: serusers(a)lists.iptel.org > Betreff: [Serusers] Finally, ser & vm working ok > > > Hi > > Finally I made ser w/vm works ok > I did it with two instances of ser running > - One to process all connections > - Other only for VM w/ans_machine > > Works on not on-line or not answer > > If it's ok, I can send all the cfgs to the list > > > Pablo Murillo > > _______________________________________________ > Serusers mailing list > serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers > >

21 years, 1 month

Re: [Serusers] Failure route processing

by jaime.gil＠orange.co.uk

Thanks for that, Jiri. Jaime ******************************************************************************* Important. Confidentiality: This communication is intended for the above-named person and may be confidential and/or legally privileged. Any opinions expressed in this communication are not necessarily those of the company. If it has come to you in error you must take no action based on it, nor must you copy or show it to anyone; please delete/destroy and inform the sender immediately. Monitoring/Viruses Orange may monitor all incoming and outgoing emails in line with current legislation. Although we have taken steps to ensure that this email and attachments are free from any virus, we advise that in keeping with good computing practice the recipient should ensure they are actually virus free. Orange PCS Limited is a subsidiary of Orange SA and is registered in England No 2178917, with its address at St James Court, Great Park Road, Almondsbury Park, Bradley Stoke, Bristol BS32 4QJ. *******************************************************************************

21 years, 1 month

[Serusers] Contact analyze in Location table

by Marc Livet

Hi all, We're looking for informations regarding an INVITE action we would like to plan for SER server; We're manufacturing a new SIP phone, and in case of DSL-modem router, we're developing a special REGISTER with 2 Contacts for the same SIP phone: A public IP address, and a private IP address. In each case, SER server is placed on external part. Here is a scheme of what is done: @IP1 SIP phone1-----| @IPWan |---[modem-routeur]-----------(......INTERNET.......)-----------------[Exter nal SER server] SIP phone2-----| Location Table : SIP phone-1 <=> {@IP1 ; @IPWan} @IP2 SIP phone-2 <=> {@IP2 ; @IPWan} What we want to do is following: When SIP phone1 is looking for a call-session with SIP phone2, we want SER server to compare WAN contacts in mysql location table, and in case of same Response (=@IPWan), it will redirect INVITE by sending a "302 Moved Temporarly" to SIP-phone1, with a special new contact as SIP-phone2 private IP address (@IP2). Could anyone ever done that before? Any ideas are welcome. Really thanks for your support. Best Regards. Marc

21 years, 1 month

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sr-users October 2003