Sylantro Systems delivers the world's most feature rich IMS compliant VoIP platform for network operators, VoIP services, web applications, integrated services, leader in global deployments and global partners, VOIP IMS Platform.
Digium is an Open Source telecommunications supplier. We are the primary corporate sponsor of the Asterisk Open Source PBX and offer a variety of specifically designed low and high density telephony hardware and professional services related to Asterisk.