%0 Journal Article %T Implementation of Order-wire Functionality in IRITEL NG-SDH devices %A P. Mi£¿ovi£¿ %A P. Kne£¿evi£¿ %A M. Ili£¿ %A D. Katani£¿ %J Telfor Journal %D 2011 %I Telecommunications Society, Academic Mind %X This paper describes the implementation of order-wire functionality in NG-SDH devices ODS2G5 and OTS622 IRITEL. The paper also describes the operation of order-wire in networks with arbitrary topologies, as well as the configuration of order-wire functionality by using network management software SUNCE. The presented solution for order-wire functionality is compared with VoIP solutions. The paper shows that the presented solution provides fast reaction to network failures, while keeping the implementation simple. %K NG-SDH %K order-wire %K VoIP %K network management %K reliability %U http://journal.telfor.rs/Published/Vol3No1/Vol3No1_A6.pdf