When you try to register IMS user via P-CSCF in visited network (roaming) in Kamailio IMS platform you will probably get following error:

I'm placing here an article, about the SIP platforms and platform components. Hope help someone! 

Link to the full version: http://www.hindawi.com/journals/am/2011/372591/ref/

Pavel Segec and Tatiana Kovacikova

Department of InfoCom Networks, University of Zilina, Univerzitna 8215/1, 010 26 Zilina, Slovakia
 

This article describes a very basic configuration of DHCP server (isc-dhcp-server) under Debian OS.

Installing DHCP server:

#apt-get install isc-dhcp-server

*note: package isc-dhcp-server replaced the old dhcp3 package

We need to specify the port to bind to. To do this we need to edit the file "/etc/default/isc-dhcp-server":

SIP, Kamailio, IPv4/IPv6

1.     Ciele

Na Virtual Boxe nainštalovať operačný systém Debian

Urobiť komunikáciu Windows –> Debian -> internet

Na Debiane spraviť DNS server

The table provides feature overview of six open source IMS clients:

This guide describes how to install and configure RESTUND STUN/TURN server for supporting TURN functionality. 

This sollution is still in TESTING STATE!!!

TURN server seems to work properly, but sometimes the klient channel allocation on server side is not working and the media stream wont start!

Testing with: Restund v0.4.0, Kamailio v3.2, X-lite 4.

First we need to install compiler g++ and make:

 apt-get install g++ make

This is a list of supplementary study materials usable for learning CCNP 642-902 - Route course and supporting following successful certification. They allow a deeper knowledge and support better orientation on selected topics. The contain links on externel Internet sources how I recommend it to my students during my CCNP lessons ofn our Cisco networking academy.

Main resources, of course, are following books:

GNS3 simulator allow to interconnect GNS3 topology with VirtualBox hosts (for example those running Win or Linux OSs) and allows to make interesting topologies and scenarios testing with real traffic and services.

 This is the flowchart of Kamailio 3.2 default routing logic. The main purpose of this flowchart is to help you understand the routing logic and navigate through it more efficiently and quickly. It should also serve as a tool when you are trying to modify something.

Most routing blocks (mainly those in which routing can end (exit)) are displayed and organized.

Authors: Michal Javorka, Ján Hrnko, Martin Pohančeník

Android 4.0 x86 port installed on virtualbox have problem to provide networking services over Internet as it requires wifi adapter. We should solve this issue with following settings: