AT&T MLS-12D manual Installing the Control Unit, 1 Control Unit Installation, Insert The Modules

Models: MLS-12D

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Installing the Control Unit

Installing the Control Unit

MOUNT THE BACKPLANE ON A WALL CAUTION: To prevent electrostatic discharge, overheat- ing, or other damage, environmental and electrical condi- tions must meet the specifications on p. 1-4.

MOUNT THE BACKPLANE ON A WALL

INSERT THE MODULES Hold the backplane in place on the wall. Using the four screw keyholes in the backplane as a template, mark the screw locations on the wall.

TEST THE SYSTEM Start the four #12 screws, Ieaving thereabout 1/4” out from the wall. Use screws appropriate for the wall surface- when loaded with five modules, the control unit weighs 37.5 pounds.

CONNECT THE MODULAR TELEPHONE CORDS Slip the backplane onto the screws and tighten them.

INSERT THE MODULES

CAUTION: Do not connect AC power cord before inserting modules.

Slide the first 206 module straight into the left most slot of the backplane. Push slowly but firmly until the module snaps into place (you should hear and feel two snaps). The module must be securely attached to the rear of the backplane and held into place by the locking tab on the bottom front of the backplane/module slot. Insert the next 206 module in the second slot from the left. Note the align- ment of dovetails between each module when modules are installed next to each other.

CONNECT THE MUSIC-ON-HOLD SOURCE (OPTIONAL)CAUTION: Do not force the module. If it does not insert easily, pull down on the front locking tab, remove the module, clear any obstruction, and insert the module again.

CONNECT THE LOUDSPEAKER PAGING SYSTEM Insert the processor module in the center slot. Insert the other 206 modules from left to right, without skipping slots.

Label the line and extension jacks as shown below:

TEST THE SYSTEM

Connect the AC power cord to the power jack on the top right rear of the backplane. Press firmly until it locks into place. Make sure the circuit breakers on each module and the backplane are pushed in.

Plug the other end of the power cord into a grounded 3- prong wall outlet not controlled by a switch.

Check all green lights on the front of the unit. If any lights are out, remove the power cord and reseat the module.

CONNECT THE OUTSIDE TELEPHONE LINE CORDSTo test the lines, plug a PARTNER 12-button phone into extension 10. Press the line button for each outside line and listen for dial tone. Repeat for extensions 16, 22, and 28.

Disconnect the power cord before continuing.

CONNECT THE MODULAR TELEPHONE CORDS

Connect the modular telephone cords from the telephones to the extension jacks on the 206 modules, starting with the top extension jack on the leftmost 206 module. Route the cords through the hook on the front of the module, then through the slot between the module and the base of the backplane.

Leave at least 2 feet of slack in the cords so that you can easily reconnect the cords during replacement.

CONNECT THE MUSIC-ON-HOLD SOURCE (OPTIONAL)

Follow these steps to connect the audio source to the control unit. (Assemble and use according to the manufacturer’s directions.)

CONNECT THE AC POWER CORD Using a flathead screwdriver, turn the volume control on the processor counterclockwise to the lowest setting.

INSTALL THE OUTSIDE COVER Insert the RCA plug into the RCA jack on the processor (labeled MUSIC ON HOLD). Route the cord through the hook on the front of the module and the slot between the module and the base of the backplane.

Figure 2-1 Control Unit Installation Connect the cord to the music-on-hold source according to the manufacturer’s directions. Finally, adjust the volume using the volume control on the processor. Place a call on hold and listen to the level while adjusting. If you do not hear music at any volume setting, check system programming procedure #602 (chapter 3).

CONNECT THE LOUDSPEAKER PAGING SYSTEM

(OPTIONAL)

Only the steps for connection to the control unit are included here. Follow the rnanufacturer's directions for setting up and using it.

CONNECT THE OUTSIDE TELEPHONE LINE CORDS

Test for dial tone at the network interface jacks before connecting outside lines.

Manual background Connect the outside telephone line cords to the line jacks on the 206 modules, starting with the top line jack on the leftmost 206 module. Route the cords alongside the tele- phone cords. Leave at least 2 feet of slack in the cords so that you can easily reconnect the cords during replacement.

Connect the free end of each line cord to the appropriate network interface jacks.

Insert the modular plug for the paging system into the modular jack labeled PAGE on the processor. Route the cord as described in step 16.

Connect the cord to the loudspeaker paging system accord- ing to the manufacturer’s directions.

CONNECT THE AC POWER CORD

Connect the power cord as described in steps 9, 10, and 11.

INSTALL THE OUTSIDE COVER

Holding the sides of the cover, slide the cover onto the front of the modules until it meets the backplane.

Figure 2-1 Control Unit Installation

2-2 Installing the Hardware

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AT&T MLS-12D Installing the Control Unit, 1 Control Unit Installation, Mount The Backplane On A Wall, Insert The Modules