FOR IMMEDIATE RELEASE
May 05, 2009
TIA Issues Session Initiation Protocol to ISDN User Part Interworking Standard
Principles Specified for Interworking Between cdma2000® and Legacy Circuit-Switched Networks to Support Basic Voice Calls in IP Multimedia Core Network Subsystem
Arlington, Va. – The Telecommunications Industry Association (TIA), the leader in advocacy, standards development, business development and intelligence for the information and communications technology (ICT) industry, recently released a new standard, TIA-1112 Session Initiation Protocol (SIP) to ISDN User Part (ISUP) Interworking.
TIA-1112 specifies the principles of interworking between the cdma2000® IP Multimedia (IM) Core Network (CN) subsystem and ISUP based legacy Circuit Switched (CS) networks, in order to support IM basic voice calls.
The new standard addresses the areas of control and user plane interworking between the IM CN subsystem and CS networks through the network functions, which include the Media Gateway Control Function (MGCF) and IM-Media Gateway (MGW). For the specification of control plane interworking, areas such as the interworking between SIP and ISUP are detailed in terms of the processes and protocol mappings required for the support of both IM originated and terminated voice calls.
TIA-1112 addresses only mappings at the upper protocol (i.e., signaling) layer and does not address lower layer (i.e., transport) interworking. Other areas addressed encompass the transport protocol and signaling issues for negotiation and mapping of bearer capabilities and Quality of Service (QoS) information.
The standard specifies the interworking between cdma2000 profile of SIP (as detailed according to TIA-873.004 IP Multimedia Call Control Protocol Based on SIP and SDP – Stage 3) and ISUP, as specified in ANSI T1.113-2000: Signalling System No. 7 (SS7) – Integrated Services Digital Network (ISDN) User Part.
TIA-1112 was formulated under the cognizance of TIA Engineering Committee TR-45 Mobile and Personal Communications Systems Standards, TR-45.2 Subcommittee on Wireless Intersystem Technology. To learn more about how to participate in standards development with TIA, please contact Stephanie Montgomery at smontgomery@tiaonline.org.
To obtain copies of the document, contact IHS International at +1.800.854.7179 (United States and Canada); +1.303.397.7796 (international) or visit global.ihs.com.
For technical information, please contact Peter Bogard at pbogard@tiaonline.org. For media inquiries, please contact Mike Snyder: msnyder@tiaonline.org.
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TR-45 member companies include: Aeroflex; Agilent Technologies, Inc.; AirCell, LLC; Airvana, Inc.; Alcatel-Lucent; ALLTEL Communications, Inc.; Apple; AT&T; Bell Canada; Bridgewater Systems Inc.; Camiant; CDMA Development Group; Cingular Wireless; Cisco Systems, Inc.; CML Microcircuits (USA) Inc.; CommFlow Resources Inc.; CSI Telecommunications; Defense Information Systems Agency; DoCoMo Communications Lab USA, Inc.; Dolby Laboratories Inc.; Ericsson Inc.; ETI Connect; FBI; FTR&D LLC; Fujitsu Network Communications, Inc.; Gemalto INC; Hitachi Telecom (USA) Inc.; Huawei Technologies USA; Hughes Network Systems, LLC; I'M Technologies Ltd.; Intel Corporation; Intellon; Intrado; IP Fabrics; Kyocera Sanyo Telecom, Inc.; LG InfoComm U.S.A., Inc.; Lockheed Martin Corporation; Marketing Information Technologies, Inc. (MIT); Maz-Sky Canadian International Group, Inc.; Motorola, Inc.; Movius Interactive Corporation; National Communications System; NeuStar Inc.; Nokia Siemens Networks; Nokia, Inc.; Nortel Networks; ORCA SYSTEMS, INC.; Panasonic Computer Solutions Company; Prysmian Cables and Systems; QUALCOMM; Research In Motion Corporation; Rogers Wireless; Rohde & Schwarz, Inc.; RTKL Associates Inc.; Samsung Electronics; Samsung Telecom America; Sharp Laboratories of America; Sierra Wireless America, Inc.; Sigma Delta Communications, Inc.; Space Data Corporation; Spirent Communications; Sprint Nextel; SS8 Networks, Inc.; Starent Networks Corporation; Tatara Systems; Telcordia Technologies; TeleCommunication Systems, Inc.; Telus Mobility; Texas Instruments, Inc.; US Cellular; UTStarcom, Inc.; Verizon Wireless; VIA Telecom; ZTE USA, Inc.
About TIA
The Telecommunications Industry Association (TIA) represents the global information and communications technology (ICT) industry through standards development, advocacy, tradeshows, business opportunities, market intelligence and world-wide environmental regulatory analysis. With roots dating back to 1924, TIA enhances the business environment for broadband, mobile wireless, information technology, networks, cable, satellite and unified communications. Members’ products and services empower communications in every industry and market, including healthcare, education, security, public safety, transportation, government, the military, the environment and entertainment. TIA co-owns the SUPERCOMM® tradeshow and is accredited by the American National Standards Institute (ANSI). Visit tiaonline.org.
TIA’s Board of Directors includes senior-level executives from ACS, ADC, ADTRAN, Alcatel-Lucent, ANDA Networks, ArrayComm, AttivaCorp, Avaya, Bechtel Communications, Inc., Cisco Systems, Corning Incorporated, Ericsson, Inc., GENBAND, Inc., Graybar, Henkels & McCoy, ILS Technology, Intel Corporation, Intersect, Inc., LGE, Microsoft, Motorola, Nokia Siemens Networks, Nortel, Panasonic Computer Solutions Co., Qualcomm, Research In Motion, Sumitomo Electric Lightwave Corporation, Tellabs, Tyco Electronics, Ulticom, Inc., and Verari Systems. Advisors to the Board include FAL Associates, Orca Systems and Telcordia Technologies.
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