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ADTRAN Introduces ATLAS T1 Inverse Multiplexer; ATLAS 550 Device Is Industry's Lowest Cost Point-to-Point T1 IMUX Solution.

Business Editors/Technology Writers

Networld+Interop Atlanta 2001

Booth No. 7339

HUNTSVILLE, Ala.--(BUSINESS WIRE)--Sept. 11, 2001

 in full National Association of Securities Dealers Automated Quotations

U.S. market for over-the-counter securities. Established in 1971 by the National Association of Securities Dealers (NASD), NASDAQ is an automated quotation system that reports on
: ADTN ADTN Administrative Data Transmission Network
ADTN Administrative Data Telecommunications Network
) the market leader in Enterprise Integrated Access Devices (IADs) today announced a new T1 inverse multiplexer (IMUX See inverse multiplexor. ) product for high-speed LAN-to-LAN connectivity. The ATLAS 550 NxT1 HSSI (High-Speed Serial Interface) A serial interface with transmission rates up to 52 Mbps. It is often used to connect one or more LAN routers and network devices to a T3 line, which provides 44.736 Mbps.  Module combines multiple T1 circuits into a single logical data stream through its integral High-Speed Serial Interface The High-Speed Serial Interface (HSSI) is a differential ECL serial interface standard developed by Cisco Systems and T3plus Networking primarily for use in WAN router connections. It is capable of speeds up to 52 Mbit/s with cables up to 50 feet in length.  (HSSI) port. This hot-swappable module uses an ADTRAN proprietary protocol to support point-to-point, high-speed data applications.

"This product not only adds T1 IMUX functionality to the ATLAS 550, it also puts us a step ahead of the competition by including this functionality in a multi-function device," said Tim Saunders, ADTRAN vice president of product management, Enterprise Networks Division. "Where most competitors offer a single-function product, the ATLAS 550 offers additional functionality while providing a major cost advantage."

The NxT1 HSSI module is designed for high-speed point-to-point data transmission typically used to extend two LANs across a wide area circuit. The module can inversely multiplex up to eight T1s and can automatically adjust the data rate to the HSSI port based on the number of T1 circuits. The module itself includes four T1 interface ports and additional T1 ports may be added using other ATLAS 550 T1 modules. Use of the NxT1 HSSI module in the ATLAS 550 does not impact other IAD applications it supports such as T1, ISDN ISDN
 in full Integrated Services Digital Network

Digital telecommunications network that operates over standard copper telephone wires or other media.
, or Frame Relay.


The ATLAS 550 is an IAD designed to improve the performance and lower the costs of Voice, Data, Video, and Internet communications for both enterprise businesses and network service providers. With the ATLAS 550, many WAN functions can now be merged and combined into a small, economical, modular platform that will replace a rack of traditional single-function access devices. With the ATLAS 550, traditional multiplexed and packet networks are easier to deploy and manage while providing more bandwidth efficiency out of existing or new communications links. The ATLAS 550 provides a new level of communications flexibility by offering many of the features previously found in larger central office, PBX, or router equipment.

The ATLAS 550 chassis includes a high-speed multi-protocol backplane and six modular expansion slots: two network interface slots and four user interface slots. A wide range of hot-swappable, industry standard modules are also available to effectively converge your telecommunications and your existing network systems such as routers, PBX, key systems, video conferencing equipment, remote access servers, LANS, faxes, and telephones.

The ATLAS 550 NxT1 HSSI Module has a list price of $1,995 and will be available in November.


ADTRAN, Inc. is an established supplier of advanced transmission products for today's expansive telecommunications networks. Widely deployed in carrier, CLEC (Competitive Local Exchange Carrier) An organization offering local telephone service that is not one of the traditional telephone companies. The Telecommunications Act of 1996 allowed competition to the incumbent telcos (ILECs), enabling new companies (CLECs) , enterprise and global networks worldwide, ADTRAN products support all major digital technologies, including fiber, T3, T1, E1, wireless T1/E1, ATM, Frame Relay, VPN, SHDSL SHDSL Single-Line High-bit-rate Digital Subscriber Line
SHDSL Symmetrical High-Density Digital Subscriber Line
SHDSL Symmetrical High Bitrate Digital Subscriber Line (Ericsson)
SHDSL Symmetrical Highspeed Digital Subscriber Loop

SDSL - Single-line Digital Subscriber Line
, HDSL, HDSL2, ISDN, and DDS (1) (Digital Data Storage) See DAT.

(2) (Data Dictionary System) See QuickBuild and OpenDDS.

(3) (Dataphone Digital S
. According to Gartner/Dataquest and IDC, ADTRAN has gained the leading market position in enterprise integrated access devices and HDSL, while maintaining its leadership position for the fourth year in a row in T1 and subrate CSU/DSUs, Frame Relay/DDS extension, and ISDN extension. ADTRAN equipment serves the major Incumbent Local Exchange Carriers, interexchange carriers, ISPs, Competitive Local Exchange Carriers, international service providers, public and private enterprises, and original equipment manufacturers.

For more information, contact the company at 800 9ADTRAN (800 923-8726) or via e-mail at On the web, visit
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Publication:Business Wire
Date:Sep 11, 2001
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