Telmax XpressVoice2400 Undergoes Successful Interoperability Tests In Independent Lab.Business Editors/High-Tech Writers FREMONT, Calif.--(BUSINESS WIRE)--Jan. 31, 2000 Telmax Communications Corp., a provider of single-pair Digital Subscriber Line See DSL. (communications, protocol) Digital Subscriber Line - (DSL, or Digital Subscriber Loop, xDSL - see below) A family of digital telecommunications protocols designed to allow high speed data communication over the existing copper telephone lines between end-users and (DSL DSL in full Digital Subscriber Line Broadband digital communications connection that operates over standard copper telephone wires. It requires a DSL modem, which splits transmissions into two frequency bands: the lower frequencies for voice (ordinary ) access solutions, today announced that D C Beeman Consulting, an independent lab headquartered in Pasadena, Calif., had successfully tested Telmax's XpressVoice2400 Integrated Access Device An IAD is a customer premises device that provides access to wide area networks and the Internet. Specifically, it aggregates multiple channels of information including voice and data across a single shared access link to a carrier or service provider PoP (Point of Presence). compatibility with D4 type DS1 channel banks and class 5 switches. Telmax Communication's XpressVoice2400 provides remote office connectivity by converting a single T1 digital access line into 12 or 24 analog telephone circuits for voice, facsimile or modem applications as well as high-speed data transport, all over a single copper pair. According to Telmax Vice President of Marketing Franchesca Walker, &uot;the XpressVoice2400 accelerates the convergence of voice and data services by enabling Local Exchange Carriers (LECs) and Competitive Local Exchange Carriers (CLECs) to offer a broad variety of both legacy and xDSL network solutions to their customers, with multiple voice and data services over a single copper pair.&uot; In the interoperability testing, the XpressVoice2400 transmitted 24 voice circuits over a T1 link into a D4-type DS1 channel bank and then into a Class 5 switch. Switches used in the testing included the Lucent No. 5 ESS and the Nortel DMS-100. XpressVoice2400 delivers high-quality loop-start or ground-start dial tone telephone line connections to key systems, off premises extensions, facsimile machines, modems, PBXs and other conventional analog telephone devices. The XpressVoice2400 meets Foreign Exchange Subscriber (FXS (Foreign eXchange Station) The interface provided by the telephone company to its customers, which includes dial tone, power and ring voltage. The telephone jack on the wall is an FXS interface. ) signaling requirements and supports CLASS services (caller id, call waiting, selective ringing, etc.). It supports fax and modem capability without compression, bit robbing or statistical multiplexing. Using industry standard interfaces, XpressVoice2400 supports a V.35, 10BaseT Ethernet or IP Router LAN (Local Area Network) A communications network that serves users within a confined geographical area. The "clients" are the user's workstations typically running Windows, although Mac and Linux clients are also used. module. The WAN interface can be either G.703 (E1), DSX-1 (T1), MSDSL MSDSL Multi-Rate Symmetric Digital Subscriber Line (UUNET) (Multi-Rate Symmetric DSL to 2.304 Mbps) or HDSL-2 (ANSI (American National Standards Institute, New York, www.ansi.org) A membership organization founded in 1918 that coordinates the development of U.S. voluntary national standards in both the private and public sectors. It is the U.S. member body to ISO and IEC. single-pair T1 with OPTIS OPTIS Overlapped Pulse-modulation with Interlocking Spectra (ADC Telecom) encoding). Each data port can be configured to direct traffic to the LAN or the WAN. XpressVoice2400 requires no line conditioning on the pairs, providing binder group integrity along with pairs carrying traditional POTS service. XpressVoice2400 features an integrated Data Service Unit/Channel Service Unit (DSU/CSU (Digital (or Data) Service Unit/Channel Service Unit) A pair of communications devices that connect an inhouse line to an external digital circuit (T1, DDS, etc.). ), allowing the user to connect directly to the single-pair T1 line without having to connect other peripheral equipment or circuit cards. About Telmax Communications Headquartered in Fremont, Telmax Communications Corp. is a privately held, four-year-old access technology company focused on leading edge design, development, and integration of xDSL technology into high speed telecommunications systems utilizing single-pair copper wire. For more information on Telmax, call 510/440-8680 or visit Telmax on the Internet at www.telmaxcom.com. |
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