Switzernet
PSE, Bâtiment A, EPFL
1015 Lausanne

Freelance project: RADIUS protocol integration in Asterisk

Switzernet

2008-08-28

Asterisk is the most widely used open-source Private Branch Exchange (PBX) software. The goal of this project is to integrate Asterisk as a server in our existing VoIP infrastructure, through Remote Authentication Dial In User Service (RADIUS), which manages user authentication and call accounting.

Main steps of the project:

• Analyze the internal RADIUS implementation of Asterisk
• Can Asterisk manage RADIUS authentication/accounting ?
• If not, analyze existing external developed RADIUS modules
• Report the results
• Setup of a test platform (test servers and SIP phones will be provided by Switzernet):
• RADIUS server (e.g. FreeRADIUS) storing user authentication information, internally or through an external database
• Asterisk server, which authenticates calls through RADIUS
• Two SIP clients (phones) registered on the Asterisk server for experiments
• Report the results
• Integration with our existing infrastructure (requirements will depend on the results of previous steps):
• Integrate the installed Asterisk server and modules (external or self-developed) with our billing system
• Replicate Asterisk database of SIP registrations in our centralized database (MySQL)
• Manage the routing priorities sent by our billing (RADIUS) in Asterisk
• Optional: study the additional features of Asterisk: Voicemail, IVRs, etc.
• Testing phase

Required skills:

• Independent and organized person
• Good Linux/UNIX knowledge
• Basic knowledge of script languages (Perl)
• Basic networking knowledge
• Notions of VoIP (SIP protocol) a plus
• Notions of SQL a plus

Reward:

• Functional test setup (step 2): 500 CHF
• Achieved integration with our billing infrastructure (step 3): 3000 CHF

Note: To be successful, every step must be documented. The published documents must be clear, self-containing (include all commands, configuration, developed code, etc.). All experiments must be described for verification and easily reproducible. If no result is achieved in step 1, but the produced documentation is good enough, setp 1 is also rewarded 100 CHF.

References:

http://www.asterisk.org/ Asterisk PBX

http://tools.ietf.org/html/rfc2865 RFC 2865 (RADIUS)

http://www.voip-info.org/tiki-index.php?page=PortaOne+Radius+auth External RADIUS module for Asterisk (1)

http://www-rocq.inria.fr/who/Philippe.Sultan/Asterisk/asterisk_sip_external_authentication.html External RADIUS module for Asterisk (2)

Contacts:

Interested? Please sent your application together with CV to jobs[at]switzernet.com

http://switzernet.com/public/060801-web/content.php?id=j

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