TEXAS INSTRUMENTS PROMOTES VOICE OVER IP STANDARDS AT COMNET 2000 Telogy Networks, A Texas Instruments Company, Demonstrates SIP and MGCP Interoperability with Nuera Communications and Xybridge Technologies Washington, DC, (Jan. 25, 2000) -- Telogy Networks, a Texas Instruments Company and a subsidiary of Texas Instruments (NYSE:TXN) (TI), the world's market leader in digital signal processors (DSP), analog, and software for voice over packet applications, will demonstrate the Session Initiation Protocol (SIP) and Media Gateway Control Protocol (MGCP) for Voice over IP communications with Nuera Communications and Xybridge Corporation at the ComNet 2000 "Voice Over IP Interoperability Pavilion." The pavilion is sponsored by ComNet 2000, Mier Communications and Pulver.Com, and organized by Nuera Communications. This innovative showcase of cutting edge VoIP technology for IP telephony and conferencing will be presented in Hall C, Booth #4102 in the Washington, DC Convention Center from January 25-27. The pavilion will feature demonstrations of next-generation VoIP interoperability utilizing the most advanced standards, including Session Initiation Protocol (SIP) and Media Gateway Control Protocol (MGCP). The nine companies participating in the pavilion will demonstrate scalable connectivity solutions for client and carrier class network devices. Powering TI's VoIP demonstrations are TI's market leading TMS320C54x? digital signal processors and subsidiary Telogy Networks'® embedded Voice over IP software, running on Telogy reference design platforms. "TI is pleased to jointly demonstrate the SIP protocol with Nuera and the MGCP protocol with Xybridge," noted Nancy Goguen, Vice President, Marketing, Telogy Networks, a Texas Instruments Company. "TI views this interoperability event as an important opportunity to demonstrate our commitment to lead in VoIP interoperability and standards support." The SIP interoperability demonstration showcases Nuera's call agent software interoperating with Telogy's VoIP signaling software. The SIP protocol can be utilized in gateway applications or client applications such as IP Phones and cable modems. SIP can be used to set up phone calls and for features such as call conferencing, call transfer and call forwarding via the Internet. The MGCP demonstration showcases Xybridge's call agent software interoperating with Telogy's VoIP signaling software. Telogy's MGCP client signaling software enables telephone calls across IP networks, in conjunction with call control features of the call agent. The interaction between the client and call agent software (which includes the translation of telephone numbers to Internet addresses) is controlled by the MGCP protocol, which ensures the proper transmission of set-up, maintenance, billing and tear down of messages. As the leading DSP and VoIP software supplier, TI offers a complete, proven solution of programmable DSPs and embedded communications software, accelerating time to market for manufacturers building voice over packet products. Using TI's programmable DSPs and Telogy's embedded Voice over IP software, manufacturers can reduce their time to market, lessen technological risk, minimize support requirements and reduce development costs. Telogy's embedded VoIP software includes signaling, telephony and protocol-processing modules as well as network-management APIs. The software addresses quality of service (QoS) issues, such as network delay, jitter and lost packets, and incorporates compression, line echo cancellation (G.168 compliant) and tone detection.