1. At&t El52103 User Manual
2. At&t Cordless Phone El52253 Manual
3. At&t El52253 Manual
4. At&t Wireless
5. Autoridade Tributaria
6. At&t Universal Card Login

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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).

• 3Merlin 206, 410, 820 Accessory Information

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:

• Complex electromechanical line switches in every telephone
• Each individual line pair plus control and light pairs must be run to each individual telephone, making for expensive on-premises wiring
• Telephones were connected to one another using labor intensive point to point wiring
• Control units consisted of many separate components including a power supply, line and feature module carrier, and punch blocks
• Compared to more modern designs emerging in the 70's, manufacturing and maintaining the system became very expensive, especially by the 1980s
• Basic features were present such as line switching, intercom, and hold but there was little possibility for addition of modern features

History[edit]

The Merlin System fixed these problems by:

• Having line switching done completely electronically at the Control Unit (Horizon was the first to do so)
• Using 4-pair wiring (two digital switching, one for analog and one for intercom). The Horizon system was also the first 'skinny cable' key system in the world and was introduced in the late 70's and like control unit switching provided the foundation of the system employed on Merlin^[1]
• An important advance in handset design was the use of printed circuit boards and automated assembly which were economical to produce. Horizon, Dimension and Merlin were leaders in the use of PCB based handsets.
• Fully electronic, all inclusive, one piece control unit
• Slots for feature modules made possible optional extra price features such as Speed Dialing, Automatic Line Selection, and Redial
• The Merlin telephones were also backwards compatible to the higher end enterprise systems, such as then System 75 and System 85 systems, then later Definity system, now called Communication Manager platforms.

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.

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 El52103 User 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.

We would like to show you a description here but the site won’t allow us. Western Digital My Cloud User Manual. Personal cloud storage. Also See for Western Digital My Cloud. Western Digital My. The Dashboard Home Page The WD My Cloud Home page has an information bar at the top right, a navigation icon bar across the top of the page, an instant overview of the status of the device’s main functions,. Wd my cloud home user manual pdf.

Merlin 206, 410, 820 Accessory Information[edit]

Cartridge Type I[edit]

Feature Package 1 (Available for use in Classic Merlin 206, 410 only):

• 5-party conference calling
• Ringer options
• Prevents outgoing calls on individual phones
• Privacy
• Automatic outside and intercom dialing
• Last number redial, automatic line selection, do not disturb
• On hook dialing, call transfer, hold reminder, group listening

Feature Package II (Included same features as Feature Package I plus the following)

• Personal and system wide 3 digit speed dialing
• Personalized Ringing
• Call pickup
• Group paging zones

Cartridge Type II[edit]

Music On Hold

• Allows a music source to be connected to the KSU which is heard by a caller on hold

Music On Hold/Paging

• Allows a music source to be connected to the KSU which is heard by a caller on hold
• Provides a paging system connection and music on hold to be used as background music while no pages are being made.

Cartridge Type III[edit]

Power Failure/Extra Alert

• Provides two RJ-11 jacks for standard touch-tone or rotary phone use in case of power failure.
• Extra Alert jack for external notification device.

References[edit]

1. ^https://themuseumoftelephony.wordpress.com/tag/horizon-pbx/

• AT&T Sourcebook Catalog 1992, 1993, 1995.
• Merlin Installation, Programming & User GuidesMERLIN 410: All Documents
• eOpinions.com on the Merlin Magix discontinuation^{[permanent dead link]}
• Definity Enterprise Communications Server and System 75 and System 85 Terminals and Adjuncts Reference Manual December 1999, support.avaya.com

Summary of the content on the page No. 1

User’s manual
EL52200/EL52210/EL52250/
EL52300/EL52350/EL52400/
EL52450/EL52500/EL52510
DECT 6.0 cordless telephone/
answering system with
caller ID/call waiting

Summary of the content on the page No. 2

Congratulations on purchasing your new AT&T product. Before using this AT&T product, please read Important safety information on page 67 of this user’s manual. Please thoroughly read the user’s manual for all the feature operations and troubleshooting information you need to install and operate your new AT&T product. You can also visit our website at www.telephones.att.com or call 1 (800) 222-3111. In Canada, dial 1 (866) 288-4268. Model #: EL52200 (two-handset system) EL52210 (two-handse

Summary of the content on the page No. 3

Parts checklist Your telephone package contains the following items. Save your sales receipt and original packaging in the event warranty service is necessary. User’s manual EL52200/EL52210/EL52250/ EL52300/EL52350/EL52400/ EL52450/EL52500/EL52510 DECT 6.0 cordless telephone/ answering system with caller ID/call waiting Quick start guide Telephone base Power adapter for telephone base Cordless handset Charger for cordless handset Wall mount bracket (2 for EL52200, EL52210 or with power ada

Summary of the content on the page No. 4

User’s manual EL52200/EL52210/EL52250/ EL52300/EL52350/EL52400/ EL52450/EL52500/EL52510 DECT 6.0 cordless telephone/ answering system with caller ID/call waiting Table of contents Redial.........................................18 Getting started To review numbers in the redial list ......18 Quick reference guide .........................2 To call a number from the redial list .....18 Telephone base and charger install

Summary of the content on the page No. 5

Dialing, deleting and editing a Call intercept ..............................45 directory entry ................................30 Temporarily turning off the message alert To dial a directory number ................30 tone .......................................45 To delete a directory entry ...............30 Message playback ....................

Summary of the content on the page No. 6

You must install and charge See pages 5 and 6 for easy the battery before using the instructions. cordless handset. Install the telephone base close to a telephone wall jack and an electrical outlet not controlled by a wall switch. The telephone base can be placed on a flat surface or vertically mounted on the wall (page 7). For optimum range and better reception, place the telephone base in a central and open location. If you subscribe to high-speed Internet service (DSL - digital subscribe

Summary of the content on the page No. 7

Getting started Quick reference guide REDIAL/PAUSE DIR/VOLUME Press repeatedly to view the Press to scroll up while in last 20 numbers dialed menus (page 10). (page 18). Press to increase the listening While entering numbers, volume (pages 20 and 47). press and hold to insert a Press to show directory entries dialing pause (pages 16 and 27). when the handset is not in use (page 29). PHONE/FLASH While entering names or Press to make or answer a call numbers in the directory, press (page

Summary of the content on the page No. 8

Getting started Quick reference guide The > symbol indicates Main menu Using menus the feature to select. PLAY MESSAGES (page 46) Press MENU/SELECT to enter the main menu. ANSWERING SYS (page 39) DIRECTORY (page 27) Press DIR or CID to scroll through menu items. CALL LOG (page 36) RINGERS (page 11) Press MENU/SELECT to select or >PLAY MESSAGES modify an item. ANSWERING SYS SETTINGS (pages 11-14) Press OFF/CLEAR to cancel an operation, back up to the previous menu, or exit the menu display.

Summary of the content on the page No. 9

Getting started Telephone base and charger installation Install the telephone base and charger as shown below. If you subscribe to high-speed Internet service (DSL - digital subscriber line) through your telephone line, you must install a DSL filter between the telephone line cord and the telephone wall jack. The filter prevents noise and caller ID problems caused by DSL interference. Please contact your DSL service provider for more information about DSL filters. The telephone base comes r

Summary of the content on the page No. 10

Getting started Battery installation and charging Battery installation Install the battery as shown below. 1. Plug the battery 2. Insert the supplied battery 3. Align the cover flat against connector securely with the label THIS SIDE the battery compartment, into the socket inside UP facing up as indicated. then slide it upwards until the handset battery it clicks into place. compartment, matching the color-coded label. CHARGE light To replace the battery, press the tab and 4. Charge the h

Summary of the content on the page No. 11

Getting started Battery installation and charging Battery charging Once you have installed the battery, the screen indicates HANDSET 1 16 MISSED CALLS the battery status (see the table below). If necessary, place the handset in the telephone base or charger to charge the battery. For best performance, keep the handset in the 10:30PM 11/20 telephone base or charger when not in use. The battery is fully charged after 16 hours of continuous charging. See Battery status icon Technical specific

Summary of the content on the page No. 12

Getting started Wall mount installation The telephone base comes ready for tabletop use. If you want to mount your telephone on a wall, use the provided wall mount bracket to connect with a standard dual-stud telephone wall mounting plate. If you do not have this mounting plate, you can purchase one from many hardware or consumer electronics retailers. Professional assistance may be required to install the mounting plate. Tabletop to wall mount installation To change the telephone base from

At&t Cordless Phone El52253 Manual

Summary of the content on the page No. 13

At&t El52253 Manual

Getting started Wall mount installation 4. Plug the other end of the telephone line cord into the telephone wall jack. Plug the large end of the larger power adapter into an electrical outlet not controlled by a wall switch. DSL filter (not included) is required if you have DSL high- speed Internet service. 5. Align the holes on the wall mount bracket with the mounting studs of the wall mounting plate and slide the bracket down until it locks securely. Bundle the telephone line cord and pow

Summary of the content on the page No. 14

At&t Wireless

Getting started Wall mount installation Wall mount to tabletop installation To change the telephone base from the wall mount installation to tabletop installation, follow the steps below. 1. Unplug the large end of the larger power adapter from the electrical outlet. 2. If the telephone line cord and power adapter cord are bundled, untie them first. Slide the wall mount bracket up and remove it from the wall mounting plate. Unplug the end of the telephone line cord from the telephone wall ja

Summary of the content on the page No. 15

Telephone settings Menu overview Use the menu to change the telephone settings. 1. Press MENU/SELECT in idle mode (when the handset is HANDSET 1 not in use) to enter the main menu. 16 MISSED CALLS 2. Press DIR or CID to scroll until the > is next to the feature you want to select. 10:30PM 11/20 3. Press MENU/SELECT to select or save the indicated item. The handset is in -OR- idle mode. Press OFF/CLEAR to cancel an operation, back up to the previous menu or exit the menu display. >PLAY MES

Summary of the content on the page No. 16

Telephone settings Handset settings Ringer volume You can set the handset ringer volume level (1-6), or turn the ringer off. When the ringer is off, appears on the handset screen. 1. Press MENU/SELECT in idle mode to enter the main menu. 2. Press DIR or CID to scroll to >RINGERS. Press RINGER VOLUME MENU/SELECT. 3. Press MENU/SELECT to select >RINGER VOLUME. 4. Press DIR or CID to sample each volume level. 5. Press MENU/SELECT to save your preference. NOTES: • Changing the handset ri

Summary of the content on the page No. 17

Telephone settings Handset settings Voicemail waiting (visual message waiting) indicator If you subscribe to a voicemail service offered by your HANDSET 1 telephone service provider, this feature provides a visual NEW VOICEMAIL indication when you have new voicemail messages. NEW VOICEMAIL and appear on the handset screen. 10:30PM 11/20 NOTES: • Your telephone service provider might alert you to new voicemail messages with a stutter (broken) dial tone. Contact your telephone service provid

Summary of the content on the page No. 18

Telephone settings Handset settings Key tone The handset is programmed to beep with each key press. You can turn KEY TONE off, so there are no beeps when you press keys. 1. Press MENU/SELECT in idle mode to enter the main menu. 2. Press DIR or CID to scroll to >SETTINGS, then press KEY TONE MENU/SELECT. >ON 3. Press DIR or CID to scroll to >KEY TONE, then press MENU/SELECT. 4. Press DIR or CID to select ON or OFF. 5. Press MENU/SELECT to save your preference. Set date/time The answering syst

Summary of the content on the page No. 19

Autoridade Tributaria

Telephone settings Handset settings Home area code If you dial seven digits to make a local call (no area code required), enter your area code into the telephone as the home area code. When you receive a call from within your home area code, the caller ID history only displays the seven digits of the telephone number. This feature makes it easy for you to place a call from the caller ID history. If you dial 10 digits to make a local telephone call, do not use this home area code feature. If

Summary of the content on the page No. 20

At&t Universal Card Login

Telephone settings Telephone base ringer volume When the telephone is not in use, press VOLUME on the telephone base to set the ringer volume level (1-5), or turn the ringer off. A sample of the ringer sounds as you adjust the volume. The telephone base announces, “Base ringer is off” when you set the volume to 0. NOTE: If a handset is on an outside call, the telephone base volume cannot be changed. 15