Santa Clara, CA and Hackensack, NJ -- January 18, 2000 -- Net2Phone Inc. (NASDAQ: NTOP) and 3Com (NASDAQ: COMS) today announced a multiyear agreement to jointly develop Voice over IP (VoIP) modems that integrate Net2Phone's Internet telephony services into 3Com's customized desktop and internal modems.

"Our goal is to deliver the best Internet experience for our customers," said Jerry Devlin, vice president and general manager at 3Com. "We are leveraging our e-networks expertise and our history of providing simple, reliable modem connections, and Net2Phone's IP voice leadership. The result will be a better experience for our customers."

Net2Phone's software enables computer users to place calls from a multimedia computer to any telephone, PC, or fax machine anywhere in the world at reduced rates. Through integration with the 3Com VoIP hardware, the companies expect to increase modem usage as well as Internet telephony usage, enabling lower cost phone calls worldwide at high quality.

"3Com's modem customers are a natural customer base for Net2Phone," stated Yonah Lloyd, vice-president of business development for Net2Phone. "3Com is the world's leading modem manufacturer, and its customers are particularly interested in making the most of their on-line experience. Net2Phone and 3Com will expand and enhance that Internet experience, allowing them to enjoy real-time conversations in PC-to-Phone or PC-to-PC mode, sending their voice as an email attachment, and enjoying many other exciting new features."

About 3Com Corporation With over 300 million customer connections worldwide, 3Com Corporation connects more people and organizations to information and each other in more innovative, simple and reliable ways than any other networking company. 3Com delivers e-Networking solutions through information access products and network systems to enterprises, small businesses, consumers, carriers and network service providers. For further information, visit 3Com's World Wide Web site at www.3com.com or the press site at www.3com.com/pressbox.

About Net2Phone Inc. Net2Phone is a leading provider of voice-enhanced Internet communications services to individuals and businesses worldwide. Net2Phone enables people to place low-cost high quality calls from their computer, telephone, or fax machine to any telephone or fax machine in the world. Net2Phone develops and markets technology and services for IP voice and e-commerce solutions for the web and other IP networks. For more information about Net2Phone's products and services, please visit www.net2phone.com.

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Such forward-looking statements include, among other things, Net2Phone's expected operating performance for the three months ending [October 31, 1999] and thereafter. Actual results could differ from those projected in any forward-looking statements due to numerous factors. Such factors include, among others, the inherent uncertainty of financial estimates and projections, the competitive environment for Internet telephony, changes of rates of all related telco rates and services, legislation that may affect the Internet telephony industry, and Net2Phone's ability to operate the services described on a large scale commercial level. The forward-looking statements are made as of the date of this press release, and Net2Phone assumes no obligation to update the forward-looking statements, or to update the reasons why actual results could differ from those projected in the forward-looking statements. Investors should consult all of the information set forth herein and the other information set forth from time to time in Net2Phone's reports filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933 and the Securities Exchange Act of 1934.

Sarah Hofstetter
Net2Phone Corporate Communications
sarah@net2phone.com

Chris Wozny
Net2Phone Investor Relations
cwozny@net2phone.com

Dave DeVries
3Com Corporation
dave_devries@3Com.com