21St Telecommunications Forum (Telfor), Date: NOV 26-28, 2013, Location: Belgrade, SERBIA, Sponsors: IEEE, Telecommunicat Soc, Univ Belgrade, Sch Elect Engn, IEEE Commun Soc, Serbia & Montenegro COM Chapter, IEEE Reg 8, Telekom Srbija, VLATACOM d o o, ERICSSON, HUAWEI, Int Business Machines d o o, Minist Educ, Sci & Technol Dev, Minist Foreign & Internal Trade & Telecommunicat, Nokia Solut & Networks Serbia, Publ PTT Enterprise SRBIJA, Republ Agcy Elect Commun Serbia, Serbian Natl Register Internet Domain Names, Serbia & Montenegro Air Traf Serv, Teri Engn, BIT Projekt, IBIS INSTRUMENTS, IEEE Serbia & Montenegro Sect, INTRACOM TELEKOM, ROHDE & SCHWARZ Osterreich Ges m b H, VIP MOBILE, APEX Solut Technol, MDS Informaticki Inzenjering