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Kamailio VoIP

Kamailio Bytes: Adding Prometheus + Grafana to Kamailio

Adding Prometheus support to Kamailio and rendering stats in Grafana

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IMS / VoLTE Kamailio Mobile Networks RFCs & Standards Software VoIP

Kamailio Diameter Routing Agent Support

Using Kamailio with a Diameter Routing Agent

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IMS / VoLTE Kamailio Mobile Networks RFCs & Standards VoIP

Kamailio I-CSCF – SRV Lookup Behaviour

Recently I had a strange issue I thought I’d share. Using Kamailio as an Interrogating-CSCF, Kamailio was getting the S-CSCF details from the User-Authorization-Answer’s “Server-Name” (602) AVP. The value was set to: sip:scscf.mnc001.mcc001.3gppnetwork.org:5060 But the I-CSCF was only looking up A-Records for scscf.mnc001.mcc001.3gppnetwork.org, not using DNS-SRV. The problem? The Server-Name I had configured as a […]

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Kamailio VoIP

Kamailio Bytes – Extracting SDP Parameters with Kamailio

Extracting SDP Parameters with Kamailio

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IMS / VoLTE Kamailio Mobile Networks VoIP

Kamailio, IMS & DNS Headches

A quick post on a lesson that took me a while to learn with DNS, Kamailio and IMS.

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FreeSWITCH IMS / VoLTE Kamailio Mobile Networks VoIP

FreeSWITCH, Kamailio & IMS Extensions

Bad Extension is nothing to do with the Dialplan…

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Kamailio VoIP

Kamailio Bytes – Working with Redis

Using Redis with Kamailio

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Kamailio VoIP

Handling multiple SIP headers with the same name in Kamailio

Some tricks to handle if you’ve got multiple headers all with the same name in Kamailio

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Kamailio VoIP

Kamailio Bytes – Using Rtimer to run Jobs

Using the Rtimer module and UAC to be annoying, or very useful.

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Kamailio VoIP

ENUM in Practice with Kamailio

Using ENUM to resolve E.164 numbers into SIP URIs using Kamailio.

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EPC Kamailio LTE Mobile Networks SDM Software

A very unstable Diameter Routing Agent (DRA) with Kamailio

I’d been trying for some time to get Kamailio acting as a Diameter Routing Agent with mixed success, and eventually got it working, after a few changes to the codebase of the ims_diameter_server module. It is rather unstable, in that if it fails to dispatch to a Diameter peer, the whole thing comes crumbling down, […]

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Asterisk Kamailio VoIP

Using Docker to develop SIP solutions with Kamailio

Using Docker to spin up environments to test Kamailio in

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Kamailio VoIP

Kamailio Bytes – OnReply Route

So far with most of our discussions about Kamailio we’ve talked about routing the initial SIP request (INVITE, REGISTER, SUBSCRIBE, etc), but SIP is not a one-message protocol, there’s a whole series of SIP messages that go into a SIP Dialog. Sure the call may start with an INVITE, but there’s the 180 RINGING, the […]

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Asterisk Kamailio VoIP

Kamailio Bytes – Gotchas with Kamailio as an Asterisk Load Balancer

Things to keep in mind before using Kamailio as a Load Balancer for Asterisk

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Kamailio VoIP

Kamailio World 2020

Kamailio world was an online event this year, but you can find all the videos here now they’ve all been posted.

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Kamailio VoIP

Kamailio Bytes – UAC – Authenticate Outbound Calls

Using UAC module to authenticate outbound calls where you need to respond to a 401 Unauthorised Response, or a 407 Proxy Authentication required

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Kamailio Python Software VoIP

Kamailio Bytes – Docker and Containers

Using Docker to containerize Kamailio instanances

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EPC IMS / VoLTE Kamailio LTE Mobile Networks Software VoIP

Kamailio Proxy-CSCF Pull

My first Pull / Merge in the Kamailio project was to fix the IMS P-CSCF config

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Kamailio VoIP

Kamailio Bytes – http_client

Using Kamailio to send HTTP requests (POST & GET) to a HTTP server and store the result.

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Kamailio VoIP

Kamailio Bytes – Multiple Kamailio Instances on a Single Box

Running multiple instances of Kamailio on the same server using init.d