Cisco Systems, Sonus Networks, Siemens and Nortel Networks head the market for softswitch architecture. But as this technology matures and voice-over-IP deployments increase, more vendors will enter the Leaders quadrant.
Published: 29 March 2006
Analyst(s): Bettina Tratz-Ryan , Deborah Kish, Tina Tian, Akiyoshi Ishiwata
Guiding Principles on Independence and Objectivity.