MPLS/Frame Relay Alliance Approves Voice Trunking Over MPLS Agreement; Promotes Voice Trunking over MPLS for Compressed Voice and Wireless Telephony Market.Business Editors/High-Tech Writers FREMONT, Calif.--(BUSINESS WIRE)--Sept. 25, 2003 The MPLS/Frame Relay Alliance announced today that its membership has approved the I.366.2 Voice Trunking Format over MPLS (1) (MultiProtocol Lambda Switching) The earlier name for GMPLS. See GMPLS. (2) (MultiProtocol Label Switching) A standard from the IETF for including routing information in the packets of an IP network. Implementation Agreement (IA). The new agreement enables the transfer of compressed voice over a converged MPLS backbone using existing ATM Adaptation Layer 2 (AAL (ATM Adaption Layer) The part of the ATM protocol that breaks up application packets into 48-byte payloads which become ATM cells when the 5-byte headers are attached. The AAL resides between the higher layer transport protocols and the ATM layer. 2) technology. The agreement contributes to the design of carrier or Provider Edge (PE) routers, multi-service edge switches and dedicated gateway equipment. The I.366.2 Voice Trunking Format over MPLS Implementation Agreement defines MPLS transport of AAL2 Common Part Sublayer Packets (CPS-Packets). The AAL2 CPS packet handling described in ITU-T See ITU. ITU-T - International Telecommunications Union I.366.2 provides the required frame formats and procedures for carrying encoded voice, dialed digits, fax, signaling information and data. The I.336.2 mechanisms are currently used in ATM, VoDSL, and wireless telephony telephony without wires, usually employing electric waves of high frequency emitted from an oscillator or generator, as in wireless telegraphy. A telephone transmitter causes fluctuations in these waves, it being the fluctuations only which affect the receiver. See also: Wireless networks. These AAL2 mechanisms permit the suppression of transport of inactive voice channels, and additionally may use voice activity detection to take advantage of the statistical nature of voice. The use of these AAL2 mechanisms also permits the multiplexing of multiple low bit-rate channels over MPLS LSPs. "This agreement provides an efficient means of transporting See: mode of transport. voice and related traffic from integrated access devices and wireless telephony networks over MPLS infrastructure networks," said David Sinicrope, System Manager at Ericsson, and the Alliance Applications and Deployment working group chairman. "Drawing on an established bandwidth-efficient voice transport mechanism, this new IA exploits existing AAL2 technology, simplifying the migration path from ATM to MPLS." "This new implementation agreement complements the Alliance's existing TDM-over-MPLS work that enables transparent transport of TDM (Time Division Multiplexing) A technology that transmits multiple signals simultaneously over a single transmission path. Each lower-speed signal is time sliced into one high-speed transmission. traffic," said Ron Insler, R&D manager at RAD Data Communications RAD Data Communications (also known as "RAD") is a privately held corporation, based in Tel Aviv, Israel, that designs and manufacturers specialized networking equipment. It was founded in 1981 by Zohar Zisapel and his brother, Yehuda. and editor of the MPLS/FR Alliance IA. About the MPLS/Frame Relay Alliance The MPLS/Frame Relay Alliance is an international industry organization that is advancing the recognition and acceptance of MPLS and Frame Relay A high-speed packet switching protocol used in wide area networks (WANs). Providing a granular service of up to DS3 speed (45 Mbps), it has become popular for LAN to LAN connections across remote distances, and services are offered by most major carriers. technologies in the global telecom industry. The Alliance is driving worldwide deployment of multi-vendor MPLS & Frame Relay networks, applications and services through interoperability initiatives, implementation agreements, and educational and marketing resources and programs. For Alliance membership information please contact Alexa Morris, executive director, at 510-608-5914 or via e-mail at amorris@mplsforum.org. Additional information about The MPLS/Frame Relay Alliance is available online at http://www.mplsforum.org/ or http://www.frforum.com/. |
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