EXHIBIT 10.21 IDT SERVICES AGREEMENT IDT SERVICES AGREEMENT, dated as of May 7, 1999 (this "Agreement"), by and between IDT Corporation, a Delaware corporation ("IDT"), and Net2Phone, Inc., a Delaware corporation ("Net2Phone"). WHEREAS, Net2Phone is...Idt Services Agreement • November 4th, 1999 • Idt Corp • Services-computer integrated systems design • New York
