InterDigital Shows Path to the Future of Wireless at 3GSM World Congress 2006; Fast Forward from GSM to HSUPA With Faster Data and Faster Time-to-Market.

KING OF PRUSSIA, Pa. -- InterDigital Communications Corporation (Nasdaq:IDCC) will demonstrate its leading edge portfolio of 2G and 3G protocol stack software, ASIC, and complete wireless modem products at the 3GSM World Congress 2006 in Barcelona, Spain, February 13-16 (Hall 1, Stand D122).

InterDigital supports the evolution of 3G technology through active participation in the standards bodies, invention of essential patented technologies, and development of advanced 3G product solutions. The company will demonstrate the following items:

--Complete WCDMA/HSDPA Modem: simultaneous high speed operation of voice, MMS, video streaming, file downloads, and Internet browsing using both packet and circuit switched modes.

--HSDPA ASIC: data speeds over 10Mbps delivering simultaneous video streams while dynamically adapting to changing channel conditions.

--HSUPA Baseband and Protocol Stack Software: improved latency and higher capacity in the uplink data channel showing the adaptive parameters of HSUPA.

--Dual-mode Protocol Stack Software: seamless handover between GSM/GPRS/EDGE and UMTS modes.

In addition, InterDigital's President and Chief Executive Officer, William J. Merritt, will participate in a panel discussion titled "How Do We Successfully Manage the Evolution of 3GPP Based Technologies?" The panel discussion at the 3GSM Conference is scheduled for Tuesday, February 14, 2006 from 17:40 to 18:15 CET.

To Schedule Meetings in Advance:

--Media / Industry Analysts / Product Inquiries: Jack Indekeu +1. 610.878.7800 or [e-mail]

--Investors / Equity Analysts: Janet Point +1.610.878.7800 or [e-mail]

About InterDigital

InterDigital Communications Corporation designs, develops and provides advanced wireless technologies and products that drive voice and data communications. InterDigital is a leading contributor to the global wireless standards and holds a strong portfolio of patented technologies which it licenses to manufacturers of 2G, 2.5G, 3G and 802 products worldwide. Additionally, the company offers baseband product solutions and protocol software for 3G multimode terminals and converged devices, delivering time-to-market, performance and cost benefits. The company's financial strength and solid revenue base contribute to the continued investment in innovation and development that will shape the next generation of wireless technology. For more information, please visit InterDigital's web site: www.interdigital.com. InterDigital is a registered trademark of InterDigital.