0000891836-01-500310 Sample Contracts

JOINT FILING AGREEMENT, DATED AS OF OCTOBER 24, 2001

Joint Filing Agreement • October 25th, 2001 • Idt Corp • Services-computer integrated systems design

• Contract Type
  Joint Filing Agreement
• Filed
  October 25th, 2001
• Company
  Idt Corp
• Industry
  Services-computer integrated systems design

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing of Net2Phone Holdings, L.L.C., IDT Domestic-Union, LLC, IDT Investments Inc., IDT Nevada Holdings, Inc., IDT Domestic Telecom, Inc., IDT Telecom, Inc., IDT Corporation, Howard S. Jonas, ITelTech, LLC and AT&T Corp. on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to shares of Common Stock, par value $0.01 per share, of Net2Phone, Inc., and that this Agreement be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts all of which taken together shall constitute one and the same instrument.

OF

Limited Liability Company Agreement • October 25th, 2001 • Idt Corp • Services-computer integrated systems design • Delaware

• Contract Type
  Limited Liability Company Agreement
• Filed
  October 25th, 2001
• Company
  Idt Corp
• Industry
  Services-computer integrated systems design
• Jurisdiction
  Delaware

AGREEMENT OF

Limited Liability • October 25th, 2001 • Idt Corp • Services-computer integrated systems design • Delaware

• Contract Type
  Limited Liability
• Filed
  October 25th, 2001
• Company
  Idt Corp
• Industry
  Services-computer integrated systems design
• Jurisdiction
  Delaware