Adax Implements Classical IP over ATM for Telecom; IP User Content and Telecom Signaling Convergence on a Single ATM Card.Business Editors/High-Tech Writers BERKELEY, Calif.--(BUSINESS WIRE)--April 11, 2002 Adax, industry leader in high performance wide area communications and signaling infrastructure, has announced support of Classical IP over ATM for its ATM boards. Support for Classical IP on the ATM cards, in accordance with RFC 2225, enables existing IP user content including voice and video to run in ATM networks and provides interoperability for these applications. Specifically, the Adax implementation enables the transmission of IP datagrams and Inverse ATM Address Resolution Protocol See ARP. (networking, protocol) Address Resolution Protocol - (ARP) A method for finding a host's Ethernet address from its Internet address. The sender broadcasts an ARP packet containing the Internet address of another host and waits for it (or some other host) to send (InATMARP) requests and replies over ATM Adaptation Layer 5 (AAL5). The new Adax Classical IP over ATM module runs with the existing Adax SS7 signaling over ATM, SSCOP SSCOP Service Specific Connection Oriented Protocol SSCOP Service Specific Convergence Protocol (Wandel Goltermann) and SSCF SSCF Safer and Stronger Communities Fund (UK) SSCF Service Specific Coordination Function (B-ISDN/ATM) SSCF Senior Service College Fellowship (US military) protocols and SCTP (1) (Stream Control Transmission Protocol) An alternative to TCP that supports multiple transmission paths. Designed to facilitate SS7 signaling over TCP/IP, SCTP supports multiple IP addresses from the same host (multihomed host) and treats the data and M3UA M3UA MTP (Message Transfer Part) Level 3 User Adaptation Layer (IETF) M3UA Mtp3 User Adaptation for SIGTRAN (SIGnaling TRANsport) An IP telephony protocol from the IETF that is used to transfer SS7 signals over IP networks. The telco switch sends SS7 signals to a signaling gateway (SG) that converts them into SIGTRAN packets, which travel over IP to the next signaling gateway or on the same Adax ATM board. This enables existing IP applications for data, voice and video to run unaltered but at the same time, take advantage of the higher capacity associated with fibre optic transmission. For instance, Classical IP over ATM can be used for transporting IP datagram traffic generated by GPRS (General Packet Radio Service) The first high-speed digital data service provided by cellular carriers that used the GSM technology. GPRS added a packet-switched channel to GSM, which uses dedicated, circuit-switched channels for voice conversations. or UMTS wireless networks from GGSN/ATM gateways to IP networks whilst SIGTRAN or SS7 controls the signaling. Technical Description Two capabilities to support IP over ATM have been implemented onto the Adax boards: IP is encapsulated over AAL5 PVCs per RFC 2225 -- IEEE 802.2 LLC/SNAP LLC/SNAP Logical Link Control/Sub-Network Access Protocol encapsulation is the default packet format for IP datagrams carried over AAL5 ATM; IP Inverse Address Resolution and Discovery for ATM networks (InARP for ATM) is also implemented as per RFC 2225. The InATMARP is used to learn target IP addresses of the remote end based on VC (Virtual Channels) specified in the InATMARP_Request and InATMARP_Reply packets. About Adax Inc. Adax develops signaling solutions for high quality, reliable signaling transmission. Its high performance communications controllers and associated software for SS7, ATM, Frame Relay, SCCOP/SSCF, HDLC, LAPV/D/V5 and SCTP technologies have been providing foundations for the world's leading telecom companies including Lucent, Nortel, Ericsson, Alcatel, Hughes, and Siemens for 20 years. The Adax range of hardware and software tools enables OEMs and Integrators to quickly build communications solutions to meet the challenges of Convergence and 3G networks. Typical application areas for Adax products include Signaling Gateways, VoIP systems, Media Gateway Controllers, Media Gateway, GGSN and SGSN nodes for GPRS and 3G/UMTS, Intelligent Networks, Base Station Control, and Billing Mediation. Visit us at www.adax.com. |
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