Triple play or migrated networks is the incoming trend, which means to use the same medium to transfer data, voice, and video traffic, moreover, having the fact of multi company branches segregated over different cities or countries, drives the need of lowering phone bills’ cost. SDS offers comprehensive IP telephony solutions (NORTEL, AVAYA, CISCO, BestiP, ZyXEL) to be built on top of QoS capable infrastructure.