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37456 discussions

Setting up rtpengine to relay RTP
by Alvaro Escobar 05 Aug '23

05 Aug '23

Hello I have debian 11 with kamailio 5.6.4 (x86_64/linux). The kamailio is working fine. Now I need to setup rtprngine to relay RTP. I have installed the rtpengine using this guide: https://dfx.at/rtpengine/ Version: 10.5.4.3-1+b1 When I run: systemctl status rtpengine-daemon I got: ● rtpengine-daemon.service - RTP/media Proxy Daemon Loaded: loaded (/lib/systemd/system/rtpengine-daemon.service; enabled; vendor preset: enabled) Active: active (running) since Tue 2023-08-01 20:58:23 -05; 51min ago Docs: man:rtpengine(8) Process: 468 ExecStartPre=/usr/sbin/rtpengine-iptables-setup start (code=exited, status=0/SUCCESS) Main PID: 535 (rtpengine) Tasks: 22 (limit: 2323) Memory: 42.1M CPU: 720ms CGroup: /system.slice/rtpengine-daemon.service └─535 /usr/bin/rtpengine -f -E --no-log-timestamps --pidfile /run/rtpengine/rtpengine-daemon.pid --config-file /etc/rtpengine/rtpengine.conf Aug 01 20:58:22 debian systemd[1]: Starting RTP/media Proxy Daemon... Aug 01 20:58:23 debian rtpengine[535]: INFO: [crypto] Generating new DTLS certificate Aug 01 20:58:23 debian rtpengine[535]: INFO: [core] Startup complete, version 10.5.4.3-1+b1 Aug 01 20:58:23 debian systemd[1]: Started RTP/media Proxy Daemon. Aug 01 20:58:23 debian rtpengine[535]: INFO: [http] Websocket listener thread running I edited /etc/kamailio/kamailo.cfg with: #!define WITH_RTPENGINE #!ifdef WITH_RTPENGINE loadmodule "rtpengine.so" modparam("rtpengine", "rtpengine_sock", "udp:127.0.0.1:2223") systemctl restart kamilio To check if the rtpengine module is running: kamcmd core.modules I got: permissions auth_db auth counters acc cfg_rpc ctl sanity xlog siputils textopsx textops registrar usrloc maxfwd pv rr sl tmx tm corex kex jsonrpcs db_mysql The point is that I don't see the rtpengine module. There is another way to check if the rtpengine module is running ? Regards

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Connection to AWS services (e.g DynamoDB)
by jakub.smadis＠cloudtalk.io 04 Aug '23

04 Aug '23

Hello, I am researching how I could communicate from Kamailio (which runs on an AWS EC2 instance) with AWS services (e.g. DynamoDB) using HTTP API. My Kamailio logic is written in Kamailio configuration files. I would like to ask you if anyone has some experience with such a setup and if so how did you manage to connect it? My current options are: * HTTP connection to DynamoDB API with HTTP module I would create a Python script that would generate signature headers for the [AWS API request](https://docs.aws.amazon.com/IAM/latest/UserGuide/create-signed-req…. Then I would use the headers in the HTTP request. (I am using the Kamailio module to keep the connection open to DynamoDB). * Middleman service Small service that provides HTTP API to Kamailio and manages the communication with DynamoDB. Easiest solution but it's harder to maintain it in high availability mode. * API gateway with VPC endpoint attached to the EC2 API gateway would be a proxy to DynamoDB and we would call the VPC endpoint from the Kamailio. We would use resource policies to allow requests without auth through the VPC endpoint. Any help or feedback would be valuable to me. Thank you very much! Regards, Jakub

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change A number using a pool of numbers
by Ali Taher 03 Aug '23

03 Aug '23

Hello, I'm looking to change the A number (from number) to a number selected randomly from a pool of existing numbers (hundreds) and then relay the call to a certain gateway. What is the best and more efficient way to do it in kamailio? Thanks in advance

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advertise transport
by David Villasmil 02 Aug '23

02 Aug '23

Hello guys, I have kamailio behind a TLS->TCP Load Balancer. I'm having problems because the outgoing packets have a record has the correct advertise BUT kamailio is assuming that because the outgoing socket is TCP, it adds ";transport=tcp"... is it possible to set that parameter to tls? Thanks! David Regards, David Villasmil email: david.villasmil.work(a)gmail.com phone: +34669448337

1 1

Saving credentials in yaml/txt format
by max＠telemessage.com 01 Aug '23

01 Aug '23

Hello all, I want to save some credentials for different users I have that are being used in a digest authorization (INVITE), with different realms (I don't want the credentials to be hardcoded). I tried to look at how can I read into my kamalio.cfg from yaml/txt file, but haven't found the right module for this. Thanks in advance, Max

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Help
by Shravan Kumar 28 Jul '23

28 Jul '23

Hello, How can I configure my Kamalio server to work as multihoming for sctp testing... Please ASAP!!

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Re: RTPENGINE - RTP Proxy
by Duarte Rocha 27 Jul '23

27 Jul '23

Hello Alex, Thank you for your answer, I still don't have sound but the behaviour is now different. Is it possible to configure this behaviour on a call by call basis with flags on the rtpengine_manage() function? Or in alternative having it consume the "direction=" attribute on the SDP? Cheers

1 0

Re: RTPENGINE - RTP Proxy
by Duarte Rocha 27 Jul '23

27 Jul '23

1 0

RTPENGINE - RTP Proxy
by Duarte Rocha 26 Jul '23

26 Jul '23

Hello all, I'm currently doing some experiments with RTPENGINE and I need some help configuring it. First scenario i'm under NAT and Kamailio receives an INVITE with a private address, rewrites (c) line on SDP with it's own IP address and relays the message to the destination endpoint. After that the originator receives the 183 Session Progress with kamailio's IP as (c) parameter. After receiving the first RTP packet from the originator the media streams flow normally and I have sound on both sides including ringing. Second scenario I use different equipment that is not under NAT, but the remaining scenario is the same, except the originator doesn't send an RTP packet after the 183 Session Progress. However, in this case, no RTP stream is relayed to the originator and as a consequence it doesn't hear a ring or voice when the call is answered. As i see it, it looks like Kamailio is on passive mode to the A-Leg of the call and waits for a RTP packet to establish its stream. Is this correct? If so, how do i change this behaviour? Cheers

2 1

Re: Kamailio as SIP proxy for an Asterisk with Private IP Address
by Lewis Hutchinson 25 Jul '23

25 Jul '23

This is always a good place to start https://www.fredposner.com/1457/kamailio-behind-nat/ Lewis Mission Labs Limited is registered in England, company number 10040088. Trading Office: The Old Milk Depot, Bacup Rd, Rossendale, BB4 7FE. Registered office: The Scalpel, 18th Floor 52 Lime Street, London, EC3M 7AF. Email confidentiality notice: This message is private and confidential. If you have received this message in error, please notify us and remove it from your system. Please consider the environment before you print this email.

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