• Asynchronous Transfer Mode (ATM) - Supports the signalling protocol to establish, maintain and release switched connections and reliably send and receive signalling data across an ATM network.
• Signal System 7 (SS7) - Provides the convergence functions necessary to map the MTP level 3 SS7 protocol to the ATM protocol.
   

• IP Telephony - Provides the interface functions to map to a TCP/UDP socket interface, and real-time transport protocol (RTP) for carrying real-time audio/video data.
• Frame Relay - Provides core Frame Relay functions and/or control protocol for reliable transmission of frames (LAPF). Provides traffic and congestion management, DLCI switching, multicast and RFC 1490. Supports user and network side procedures. Supports ANSI, ITU-T and Frame Relay Forum specifications, including FRF.12.
• Integrated Services Digital Networks (ISDN) - Supports the signalling protocol to establish, maintain and release circuit switched connections across an ISDN network. May act as user and/or network side. Supports Basic Rate Interface and/or Primary Rate Interface. Supports ITU-T, AT&T 4ESS, AT&T 5ESS, Northern Telecom DMS-100, DMS-250, National ISDN-1, National ISDN-2, ETSI, VN2, VN3, 1TR6, NTT, Australian Telecom, TR-303, GR-303, Q.SIG and other variants. Support Fault-Tolerant/High-Availability functionality, utilizing an active/standby architecture.

Green Hills and Trillium have partnered to provide the necessary "Trillium-Certified" support interface between INTEGRITY and Trillium's portable protocols, removing the need for the end user to perform the time consuming work of integration and test.

Trillium protocol software products are available directly from Trillium Digital Systems, in source code form only. Trillium also provides extensive training, support and professional services in support of their products. Green Hills makes available the necessary services interface for these communications protocols, providing seamless integration with INTEGRITY. For further information regarding Trillium's telephony protocol products, please visit www.trillium.com.