For many IT professionals working in communication technology, are in the state of mind, that whether SSCA certification is useful or not. In fact, it has gained a lot of attention from professionals in networking technologies.
Session Initiation Protocol has become the essential protocol in voice and combined communications today as it is found in handsets, PBX systems, gateways and is also shifting old digital and analog lines with SIP trunks.
More info @ sip certification