of faculties for electronics and informatics) Playground to implement results of research in the area of IP based services Vision Open and transparent server and service infrastructure Cost-efficient investment that offers high-end communication environment An Example Presenting of how far we went already in the world of standard compliant and free software Showing that the use of open-source software in education can be tremendously supportive Shocking operators in what some pieces of hardware can do 2
(registrar, proxy) ◦ NAT traversal, media relay ◦ Integrated voice mail system, conferencing engine ◦ Media gateway through VoIP trunk ◦ Presence service We can in fact become a small VoIP operator. 3
different answers Telecommunication infrastructure went through a dramatic change during recent years Circuit-switched communication vs. packet- switched communication Move to IP based telephony, software handles calls and features Service extensions software based 9
Big operators had/have big partners ◦ Alcatel, Siemens ◦ Ericsson, NEC, Nokia, Motorola, … Well-established new players ◦ BroadSoft BroadWorks ◦ Microsoft Office Communications Server ◦ Cisco Unified Communications They all do offer IP based telephony solutions 10
server ◦ Presence server (UAC, UAS functionality) ◦ Resource list server ◦ Load balancer/LCR server Asterisk/FreeSWITCH/Yate PBX family ◦ Announcements ◦ Voice mail ◦ Conferencing SIPPY and other B2BUA implementations ◦ Pre-paid services 11
Standard compliant implementations ◦ Target for research or advanced services ◦ Early open adoptions of new standards Software is ideal for research ◦ Working standard compliant base for projects ◦ Each possible modification allowed ◦ Understanding boring theory with hands-on 12
Telco business too “serious”? Is OSS not yet mature enough? Big vendors cannot bankrupt as fast as small companies behind open-source! Ask Telco's running proprietary vendor software why they will not switch to OSS! 13
company? Which implementations do your web servers use? Do you rely on DNS? On open-source DNS implementations? Have you ever used Firefox to surf the web? Is your monitoring system using Nagios? 14
the reserve in the “Telco world” solely historic? Would you say that there will always be a potential separation between low cost/open- source and premium/licensed applications? Is open-source software less secure due the availability of the source code? Are the costs for customized vendor applications lower than adapted open-source products? 15
for small VoIP start-ups though, or? What if you would have the freedom and independence of choosing the integrator/supporter for your existing systems? Your points… 16
Slovak University of Technology, Sebastian is working for Slovak Telekom, a.s. in the department of architecture and design. He is an application designer in the area of voice services and converged applications. 17 All registered trademarks are property of their respective owners.