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AT&T
®
MERLIN Plus
COMMUNICATIONS SYSTEM
Release 2
Installation Manual
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Issue 1 ©1988 AT&T August, 1988 All Rights Reserved Printed in USA NOTICE The information in this document is subject to change without notice. AT&T assumes no responsibility for any errors that may appear in this document. MERLIN is a registered trademark of AT&T. IDEAL EZ Check is a registered trademark of Ideal Industries, Inc. To order copies of this document, call the AT&T Customer Information Center, 1-800-432-6600 and include the document number 518-600-008 with your order.
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Contents 1 Introduction 3 Step 1: Installing the Control Unit 3 FCC Regulations 3 Prepare the Network Interface 5 Test the Outside Lines 6 Mounting the Control Unit 12 Insert the Modules 15 Connect the Control Unit to the AC Outlet 16 Connect the Outside Lines to the Control Unit 19 Step 2: Wiring the Voice Terminals 19 Preparation Considerations 21 Voice Terminal Wiring Procedure 22 Step 3: Connecting the Voice Terminals 22 Prepare the Voice Terminals 24 Connect Each Voice Terminal to the Syste
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53 FCC Registration and Repair Information Appendix A: System Connectivity Overview 55 57 Appendix B: Quick Reference Installation Requirements Connecting the control unit 60 Appendix C: Grounding Requirements 61 Before You Turn the Power On 61 External Grounding 63 Appendix D: Wiring Reference Tables 65 Typical System Wiring Installation 67 Appendix E: Direct Connection Wiring 69 Direct Connection 69 I-1 Index
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Introduction ® This manual shows you how to install and test a MERLIN Plus Communications System, Release 2. You should perform the tasks in the order presented since many of the early tasks prepare the system for those to be performed later. The following is a brief overview of the installation steps in this manual: Set up and connect the system’s control unit, beginning with the network ● interface, as described in "Step 1: Installing the Control Unit." Install the wiring for your voice termin
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Figure 1 A typical MERLIN Plus system overview. 2 Introduction
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Step 1: Installing the Control Unit To comply with FCC regulations, notify your local telephone company of the FCC REGULATIONS following before permanently connecting your system to their lines: ● System registration number: AS593M-13529-KF-E ● Ringer equivalence number: 0.8A ● Telephone numbers of the lines to which you are connecting your system For more information on FCC requirements and regulations, see "FCC Registration and Repair Information" at the end of this manual. PREPARE THE NETWORK
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The 2-line adapter has two jacks, each of which carries a single-pair line from the 2-line network interface jack. The 50-pin connector (attached to a 66-type block) carries up to 25 lines. You can connect your outside telephone lines from these (or other) network interface connectors to the control unit in many ways. The method you use to connect your outside telephone lines to the control unit depends on the type of network interface the local telephone company installs at the control unit loc
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TEST THE OUTSIDE LINES You may want to test whether a dial tone is audible at the network interface connection. If so, you need either a basic rotary dial telephone, a Touch-Tone telephone with a modular cord, or a tool that tests for dial tones. Because a MERLIN Plus system voice terminal works only with a control unit, you cannot use a MERLIN Plus system voice terminal for this test. 1 Bring the telephone or testing tool to the jacks for your outside lines (either at the network interface or a
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And Do This If Each outside line Go on to the next procedure, "Mounting the Control Unit." has a dial tone Have the local telephone company A line does not The jack for that line at have a dial tone the network interface is check the line and the network interface. Meanwhile, go on to the a 1-line (RJ11-type) jack next procedure, "Mounting the Control Unit," and continue with the installation. The jack for that line at Replace the adapter with a new the network interface is one, and test again f
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The control unit is within 6 inches of a jack field. ● ● The network interface is available for installation or has already been installed. The wiring runs from the control unit to the voice terminal locations do ● not exceed 1000 feet. The temperature range of the location is between 40 and 104 °F ● (4 to 40 °C). The control unit location is safe from sources of extreme heat (furnaces, ● heaters, attics, or direct sunlight). ● The control unit has at least 1 inch of ventilation space around its
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Equipment Four 1 1/4-inch No. 8 self-tapping screws come with the system for mounting the unit on a wall. Regardless of the mounting surface, you will need a long-shafted screwdriver for your installation. However, the construction of the wall you have selected for mounting the control unit determines if you will need additional or substituted items for mounting. You will need: If the mounting surface is: Four 1 1/4-inch No. 8 masonry anchors Concrete Brick Concrete block Four 3/16-inch toggle b
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Locate the back of the control unit and note the four screw holes used for securing the control unit to the wall (Figure 6). FIGURE 6 The control unit (rear view). As noted in Figure 6, the horizontal distance between the center of these holes measures 8 3/8 inches, and the vertical distance measures 14 7/16 inches. Make note of these measurements since you may need them to locate and drill mounting holes in the wall. In order to reach the mounting holes from the front of the control unit, you
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Remove the top cover by first unscrewing the screw located at the center bottom of the cover. This screw is designed to stay in the hole of the cover after it has been removed from the control unit. Press down on the tab located at the center of the top and back edge and pull the top cover away, as shown in Figure 8. Once these covers are removed, you can reach the screw holes from the front of the unit. FIGURE 8 The top cover removed, revealing top screw holes. Wall-Mounting Procedure The wall
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FIGURE 9 Mounting the control unit on the wall. Step 1: Installing the Control Unit 11
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The control unit comes with covers in place and with the following modules INSERT THE MODULES already installed: ● Power supply module Memory module ● ● Line module (line board) ● Voice terminal module (station board) You have already removed the front and top covers to mount the unit on the wall. The power supply module is on the left inside the control unit. See Figure 10. The memory module houses a battery that will preserve all programming for at least four days in case of a power failure. T
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Inserting a Line Module Make sure that the power switch is off and that the system is unplugged from the power source. Then do as follows: 1 Be sure the top and front covers are off. 2 Locate the slot immediately to the right of the line module already installed. Notice the plastic channels at the top and bottom of the slots. 3 Align the top and bottom edges of the line module to the channel openings so that the gold connectors face in and the components face out and to the right of the slot. FI
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Inserting a Voice Terminal Module Make sure the power is off, the control unit is not plugged into the power source, and the covers are off. Then locate the slot between the voice terminal module and the line module already in place. Align the edges and install the voice terminal module using the same procedure you used for inserting the line module. Check to see that the module is securely in place. See Figure 12 at (a). When two line modules and two voice terminal modules are installed in this
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CONNECT THE CONTROL The ac outlet should be a 117-volt, 60-Hz, 3-prong, third-wire grounded UNIT TO THE AC OUTLET outlet. You should have an electrician check the outlet’s third wire to make sure the outlet is properly grounded. Proper grounding helps protect the system against damage from power surges caused by static discharges and lightning. See "Appendix C: Grounding Requirements" before connecting the control unit to the power source. Once you are satisfied that the outlet is properly groun
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Then If Test the outlet by plugging in a radio or a The green power light doesn’t go lamp. on and the orange light on the power switch also doesn’t go on The outlet is not functioning, is miswired or The green power light is on, but improperly grounded. Have it repaired or use the orange power switch light is another outlet. off . Stop the installation. Turn off the control The green power light is off but unit, unplug it from the ac outlet, and contact the orange power switch light is your equi
