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ostel's Introduction

This is the web application component of a larger software stack developed for ostel.co, a Free and Open Source Software (FOSS) secure voice and video calling service. It's also a simple user management front end to Kamailio, a modular SIP server.

This application does not provide the complete stack to build your own secure SIP server! The process to stand up a production server is much more complicated. Please refer to the full server documentation if you are looking to make a custom domain on your own infrastructure.

This is a Rails web application which manages a database shared with the Kamailio SIP server.

One of the core features of ostel is secure federation between SIP domains. This means that [email protected] can place calls to [email protected] without the need to create accounts on both systems. You can compare this type of network to Jabber/XMPP, Diaspora and of course the venerable messaging system we all know and love, email.

All original work in the software in this repository is licensed under the following

               GNU GENERAL PUBLIC LICENSE
                   Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. http://fsf.org/ Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.

                        Preamble

The GNU General Public License is a free, copyleft license for software and other kinds of works.

The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.

When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.

To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.

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Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it.

For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software. For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions.

Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users.

Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free.

The precise terms and conditions for copying, distribution and modification follow.

https://gnu.org/licenses/gpl-3.0.txt

ostel's People

Contributors

boxysean avatar lazzarello avatar mbelinsky avatar n8fr8 avatar zischwartz avatar

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ostel's Issues

Ship the full SIP stack include OSTel as a Sandstorm App

Sandstorm [1] has become a popular platform for individuals and smaller groups to self-host services. Not only does it allow for super easy setup of various services, but uses containerization technologies to allow multiple services to run on the same physical server, while balancing resources and lessening security concerns. Guardian Project seeks to create an open-standards telephony network (OSTN) [2] and encourages users to self-host SIP networks. As it is, there is no easy way to deploy a full OSTel stack. There was a project using Chef that has not been updated in multiple years [3], and the instructions are lacking [4]. I believe the easier you make installing OSTel, the faster OSTN can spread, and the more decentralized the network may become. This in turn encourages more interest and outside development, so it may well be worth your time later to look into support efforts like Sandstorm now.

[1] https://sandstorm.io/
[2] https://dev.guardianproject.info/projects/ostn/wiki/Wiki
[3] https://github.com/guardianproject/chef-ostn
[4] https://dev.guardianproject.info/projects/ostel/wiki/Server_Documentation

merge in all backend requirements into this repository

The repos are a mess! This is due to the complexity of managing a true SIP backend. It's not web, it's not email...it's VoIP! Now that full-stack automation is possible using SSL certificates from Let's Encrypt, add all backend dependencies to this repo to automate the complex parts.

Right now I'm shooting for Ansible as the system to define the automation rules and execute the procedure.

Ostel.co long downtimes

There has been downtime for days during summer. At the moment my SIP client cannot connect and isup.me says ostel.co website is down. Is it possible to fix these issues?

// , Windows Phone

// ,

I notice that Windows Phone has many applications for SIP and VOIP calls, but no instructions on the ostel.co website.

Some family of mine have Windows Phones, but Signal, the app I prefer, does not offer an application for Windows Phones.

Since I would like to offer them encrypted phone calls, I would like to use OSTEL for Windows Phones.

Test ICE connectivity to bypass rtpproxy

The current ostel architecture depends on host nat traversal to properly establish RTP streams between two endpoints. This raises bandwidth requirements on the server side, due to proxying the encrypted bits.

It would be a nice feature to allow RTP streams between two endpoints directly, without server-side proxy.

Coturn is an active project with the primary objective to provide a single server which supports the myriad NAT traversal methods. I installed it on ostel.co and did some tests. Two clients connected properly though they failed to exchange UDP packets with each other, rather falling back to the server-side proxy.

This is using the default configuration. I would like to change the configuration or test on a non-production environment. If successful, this network architecture would be similar to RedPhone's backend.

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