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View and Download AT&T 993 2-Line user manual online. Two-line speakerphone with caller ID/call waiting. 993 2-Line Telephone pdf manual download. Also for: 993 - at&t 993 corded speakerphone, 993. Login to manage your AT&T Wireless, DIRECTV, U-verse, Internet or Home Phone services. View or pay your bill, check usage, change plans or packages, manage devices & features, and more. Founded in 1993 by brothers Tom and David Gardner, The Motley Fool helps millions of people attain financial freedom through our website, podcasts, books, newspaper column, radio show, and premium. Microsoft Corp. AT&T Corp., 550 U.S. 437 (2007), was a United States (U.S.) Supreme Court case in which the Supreme Court reversed a previous decision by the Federal Circuit and ruled in favor of Microsoft, holding that Microsoft was not liable for infringement on AT&T's patent under 35 U.S.C.
AT&T Merlin 5-button telephone (voice terminal) manufactured in early 1985
The AT&T (also Lucent, now Avaya) Merlin telephone system was introduced in late 1983, branded American Bell Merlin. After the breakup of AT&T in 1984, it was rebranded AT&T Merlin. It was designed at the beginning of the 1980s prior to the Bell System Divestiture as a modern electronic replacement for the dated electromechanical 1A2 Key System. Earlier Bell attempts at an electronic key system, such as the Horizon and Dimension, were not as successful as were the much larger systems, in fact the Dimension was a PBX. The Merlin was the first small electronic system, replacing the Com Key 416. The Merlin system was originally sold in two-line, six-telephone (206); four-line, 10-telephone (410); and eight-line, 20-telephone (820) configurations. Later, there was a further 10-line, 30-telephone configuration, with an expansion KSU allowing the system to accommodate up to 70 telephones available (1030 and 3070 respectively).
Predecessors[edit]
The 1A2 Key Telephone System and later ComKey series (4-16, 7-18, 14-34) had the following problems which the Merlin System sought to solve:
History[edit]
The Merlin System fixed these problems by:
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The original Merlin was replaced with the Merlin Plus system in the late 1980s, using circuit cards to be expandable to 8 lines and 20 telephones, much like the original 820 model. The original Merlin Plus was dubbed the 820d. It was identical in features to the earlier Merlin 820 with the Feature Package 2 cartridge installed. Following the 820d was the 820d2. The 820d2 included the previous features as the 820d but featured an Automatic System Access (ASA) processor coupled with a voice synthesis capabilities and a Busy Buster. The ASA processor provided users with call forwarding, direct extension dial, and system answer capabilities. The busy buster allowed users to have the 820d2 automatically retry a busy number every minute for up to 10 minutes and notify the user when the call was connected. Both the ASA and Busy Buster required a their own voice terminal port to function. In the early 1990s, the Merlin II and Merlin Legend debuted with even more features and expandability, and new MLX telephones, but the system was also backwards compatible with the original Merlin telephones.
A Merlin Legend system in an office building. There is at least electrical pin-compatibility between the Magix and the Legend, as a MagixDS1 board (colored grey) can be seen installed in this system.
In 1999, Lucent Technologies introduced the Merlin Magix as the replacement for the Merlin Legend. The Magix's carrier was metal and, as such, modules were not encased inside plastic shells as they were with the Legend. The Merlin Magix supported new 4400 series digital telephones as well as older MLX telephones, but it did not support the old ATL series telephones. One important item with the conversion of Legend to Magix, is how MLX telephones used 2-pair wiring and the newer Magix/4400 series phones only used a single (1) pair. This made the Magix easier to install and more competitive in the marketplace, as most other digital PBX systems only used a single (1) pair to each station/telephone.
Due to declining sales and the introduction of the IP Office product line, Avaya retired the Magix on April 1, 2006.
At&t 2 Line Phone Manual
Despite being over two decades old, the Merlin's modern electronic features and legendary Bell System era quality and durability still make the Classic Merlins very popular telephone systems with small businesses.Merlin sets shared over 50 pieces of plastic with digital telephones of the Dimension PBX as well as membrane switch technology (a first use in AT&T), reducing product introduction costs in 1983.
Merlin 206, 410, 820 Accessory Information[edit]At T Ml17928 2 Line SpeakerphoneCartridge Type I[edit]
Feature Package 1 (Available for use in Classic Merlin 206, 410 only):
Feature Package II (Included same features as Feature Package I plus the following)
Cartridge Type II[edit]
Music On Hold
At Home
Music On Hold/Paging
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Cartridge Type III[edit]
Power Failure/Extra Alert
At&t Login
References[edit]
At&t 2 Line Phone Instructions
At&t 2 Line Speakerphone Problems
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