Voyant is an industry leading UCaaS and CPaaS service provider with the largest tier 1 voice network in the United States. Vo ... yant offers a broad portfolio of API-enabled business communication services including unified communications, SIP trunking, messaging, fax and SD-WAN data services on top of our carrier network that serves 10,500 on-net rate centers reaching nearly 90% of the U.S. population. Voyant is privately held by GTCR and can be found at www.voyant.com. read more