If it's not DNS , it's a firewall... why don't you share us a nice trace of the call, the INVITE and the OK packets is what we're looking for. Ngrep/sngrep are great tools for you to achieve this. Op za 20 apr 2024 om 21:22 schreef Mahmood Alkhalil via sr-users < sr-users(a)lists.kamailio.org&gt;gt;:

checkout the tool sngrep, and try to export us some call traces, they will tell us a lot Op ma 22 apr 2024 om 16:47 schreef christian.marinelli--- via sr-users < sr-users(a)lists.kamailio.org&gt;gt;:

Ciao Christian Unless you use rtpengine or similar, Kamailio won't do anything with RTP. So I fear, you have to sniff the INVITE + DSP and 200 OK + SDP of one of those calls without audio. (tcpdump -nvs0 port 5060 on the kamailio host for example) Look at the c=IN and m=audio lines in the SDP The c=IN contains the IP address, the m=audio the port Can the IP in the INVITE directly communicate wit the IP in the 200 OK Reply and vice versa, or is one of them a 'private' IP behind NAT? Can you ping from one ip to the other? What does traceroute from one ip to the other say? Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

Christian, instead of sharing screenshots, please share the SIP PCAP (use tshark/wireshark or sngrep) file with SIP signaling, it will ease the analysis and get you better help. I can't understand why messages are repeated exactly 3 times. Retransmissions?! *Sérgio Charrua* On Mon, Apr 22, 2024 at 7:11 PM christian.marinelli--- via sr-users < sr-users(a)lists.kamailio.org&gt; wrote:

maybe you need to register to VPN IP , not to the public IP of Kamailio *Antony* satskiy.a(a)gmail.com +380669197533 +48727830247 On Tue, 23 Apr 2024 at 09:59, Benoit Panizzon via sr-users < sr-users(a)lists.kamailio.org&gt; wrote:

Benoit is right! Your issue is a common NAT issue: your SIP signalling is sending public IP address on headers, while the SDP content is publishing internal/private IP addresses: [image: image.png] Possible solutions: 1 - Use RTPEngine and integrate it with Kamailio 2 - let your Kamailio instance modify SDP content and replace internal/private IP addresses with the public addresses 3 - let everyone communicate via VPN and using internal/private IP addresses I would choose option #1 *Sérgio Charrua* On Tue, Apr 23, 2024 at 5:55 PM christian.marinelli--- via sr-users < sr-users(a)lists.kamailio.org&gt; wrote:

christian.marinelli＠hotmail.it wrote: Hi @sergio charrua, the last days i tryed to search and study how to set my Kamailio server to modify the SDP content and replace internal/private IP addresses with the public addresses, but...without success! :( Can you help me to understand how can i modify the Kamailio configuration to do this? Thank you in advance Christian

Sergio Charrua wrote: Hi @Sergio Charrua, i tried this solution in a testing environment and i can confirm you it semmes not very difficult, but....i have some doubts: 1) To install the package on a Ubuntu 22.04 server, i need to set a specific repository as you can see in this guide: https://dfx.at/rtpengine/ Moreover, i need to manually install a librery by following this step because it is not available in the standard Ubuntu repository: https://gist.github.com/joulgs/c8a85bb462f48ffc2044dd878ecaa786 Is it correct? As i can read, it is the only way to install the package without compiling it. 2) To install the package, the APT package manager need to download 250MB of packages and dependencies to a total of 700MB of space on the disk and at the end of the installation it seems to compile something. I don't know if this is correct but i think that's a bit umcomfortable (install 700MB of packages for a only one need)... Are you sure the second solution is not possible? In the production environment i think i can't install all these things.... Thank you a lot Christian

Hello, regarding the package compilation phase at installing rtpengine, this is required if you want to use the kernel module for better performance. If you don't install the kernel module, there should be no compilation and no compiler etc.. installed. Just try if this fits more to your requirements. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com

Hello, I think you just don't need to install the rtpengine kernel modules package, then it should not be done. Cheers, Henning

Hi Christian To disalbe kernel module usage: rtpengine.conf ### for userspace forwarding only: table = -1 Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

Please share your kamailio.cfg file, if possible. Do not forget to hide any username & password that may be specified in it (i.e. db connection) *Sérgio Charrua* *www.voip.pt <http://www.voip.pt/>* Tel.: +351 <callto:+351+91+104+12+66>91 631 11 44 Email : *sergio.charrua(a)voip.pt &lt;sergio.charrua(a)voip.pt&gt;* This message and any files or documents attached are strictly confidential or otherwise legally protected. It is intended only for the individual or entity named. If you are not the named addressee or have received this email in error, please inform the sender immediately, delete it from your system and do not copy or disclose it or its contents or use it for any purpose. Please also note that transmission cannot be guaranteed to be secure or error-free. On Tue, Apr 30, 2024 at 8:47 PM christian.marinelli--- via sr-users < sr-users(a)lists.kamailio.org&gt; wrote:

Why are you loading rtpengine module first : doesn't make much sense... Same here, though this is more consistent with WITH_NAT check above: but the following line is also unnecessary: # RTENGINE MODULE modparam("rtpengine", "rtpengine_sock", "udp:localhost:2223") if (is_method("INVITE")) { setflag(FLT_ACC); # do accounting } You should add in T_RELAY route (for example) a call to rtpengine_delete, to free up RTP ports once the call is cancelled or terminated if(is_method("BYE|CANCEL")) { # if(check_route_param("proxy_media=yes")) { rtpengine_delete(); xlog("L_INFO", " RTPEngine Delete from BYE|CANCEL message in route(RELAY)!"); # } } Add in failure_route a call to rtpengine_delete() call, to free up RTP ports once the call is cancelled or terminated You should also set the advertising IP address (the public IP address?? the VPN IP address?? not sure...) Also, the script seems too complex for your needs. Do you need REGISTER? do you need route PRESENCE? and route LOCATION? *Sérgio Charrua* *www.voip.pt <http://www.voip.pt/>* Tel.: +351 <callto:+351+91+104+12+66>91 631 11 44 Email : *sergio.charrua(a)voip.pt &lt;sergio.charrua(a)voip.pt&gt;* This message and any files or documents attached are strictly confidential or otherwise legally protected. It is intended only for the individual or entity named. If you are not the named addressee or have received this email in error, please inform the sender immediately, delete it from your system and do not copy or disclose it or its contents or use it for any purpose. Please also note that transmission cannot be guaranteed to be secure or error-free. On Wed, May 1, 2024 at 8:49 AM christian.marinelli--- via sr-users < sr-users(a)lists.kamailio.org&gt; wrote: > Sergio Charrua wrote: > > Please share your kamailio.cfg file, if possible. Do not forget to hide > any > > username & password that may be specified in it (i.e. db connection) > > > > *Sérgio Charrua* > > > *www.voip.pt <http://www.voip.pt/>* > > Tel.: +351 <callto:+351+91+104+12+66>91 631 11 44 > > > Email : *sergio.charrua(a)voip.pt &lt;sergio.charrua(a)voip.pt&gt;* > > > This message and any files or documents attached are strictly > confidential > > or otherwise legally protected. > > > It is intended only for the individual or entity named. If you are not > the > > named addressee or have received this email in error, please inform the > > sender immediately, delete it from your system and do not copy or > disclose > > it or its contents or use it for any purpose. Please also note that > > transmission cannot be guaranteed to be secure or error-free. > > > > > > > > > > On Tue, Apr 30, 2024 at 8:47 PM christian.marinelli--- via sr-users < > > sr-users(a)lists.kamailio.org&gt; wrote: > > > > Benoit Panizzon wrote: > > > Hi Christian > > > > > this is interesting but when i install the > > > package all > > > start automatically. > > > How can i disable this function (compilation for kernel module)? > > > Maybe i need to install a different packege? To disalbe kernel > module usage: > > > > > rtpengine.conf > > > > > ### for userspace forwarding only: > > > table = -1 > > > > > > > Mit freundlichen Grüssen > > > > > -Benoît Panizzon- > > > Hi @Benoit Panizzon and @Sergio Charrua, > > > i set up rtpengine on my SIP server and i configured it with the > guide you > > > suggested to me: > > > > > https://nickvsnetworking.com/kamailio-bytes-rtp-media-proxying-with-rtpengi > … > > > > > Unfortunatly, there is no voice during the calls :) > > > This is the pcap file during the call with rtpengine configured, if > it can > > > help you: > > > > > https://drive.google.com/file/d/1VQVrd8w5UicAsjl095MkwN5gNUcdjfI6/view?usp= > … > > > > > To make the test, i use two devices (two smartphone) connected to > internet > > > via mobile network (not in the same LAN) and as i can saw from the > pcap > > > file, it seems they want to comunicate with different ports from the > > > standard 5060 (i opened the 5060 on my router). > > > This could be the problem? > > > Thanks a lot in advance > > > Christian > > > __________________________________________________________ > > > Kamailio - Users Mailing List - Non Commercial Discussions > > > To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org > > > Important: keep the mailing list in the recipients, do not reply only > to > > > the sender! > > > Edit mailing list options or unsubscribe: > > > Hi @Sergio Charrua, > this is my kamailio.cfg configuration file: > https://docs.google.com/document/d/1HH9Gn8f_31nDhvbpprwKFs535z65C995nVqels7… > If you will need other informations, ask me without problems... > Thank you so much > Christian > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions > To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to > the sender! > Edit mailing list options or unsubscribe: