Avaya Bogen PCM Installation and Use Manual

PCM Paging Control System

Installation and Use Manual

Model: LUPCMALL

PEC Code: 5323-106 COM Code: 408186013 Select Code: 701-000-109

Issue 2, October 1999

Notice

Every effort was made to ensure that the information in this guide was complete and accurate at the time of printing. However, information is subject to change.

FCC Statement (Part 15) - Radio Frequency

Interference

The PCM2000 System generates and uses radio frequency energy and if not installed and used in strict accordance with the manufacturer's instructions, may cause interference to radio and television reception.Testing is being conducted for compliance with the limits for a Class B device in accordance

with the specifications in Part 15 of the FCC Rules and

Canadian D.O.C. regulations.This testing is designed to provide reasonable protection against such interference. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the PCM2000 System unit off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

- Reorient the radio or TV receiving antenna.

- Relocate the PCM2000 System unit with respect to the radio or TV receiver or vice-versa.

- Plug the PCM2000 System unit into a different outlet so that it and the radio or TV receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions.The user may find the following booklet, "How To Identify and Resolve Radio-TV Interference Problems," helpful. This booklet was prepared by the Federal Communications Commission (FCC) and is available from the U.S. Government Printing Office,Washington, DC 20402. Stock order No. 004000-00345-4.

Federal Communications Commission (FCC) Statement (Part 68)

This equipment is component registered with the Federal Communications Commission (FCC) in accordance with Part 68 of its rules. In compliance with the rules, be advised of the following:

Registered equipment may not be used with Coin Telephone Lines. Equipment may be used with Party Lines in areas where state tariffs permit such connections and when equipment is adaptable for such service.

This equipment is registered as follows: Registration Number - CD2KOR-74854-PA-N

Ringer Equivalence - 1.0B

If trouble is experienced, the equipment should be disconnected from the interface to determine if this equipment, or the telephone line is the trouble source. If the equipment is determined to be malfunctioning, it should not be reconnected until repairs are effected.

Repairs to this equipment, other than routine repairs, can be made only by the manufacturer or its authorized agents.

If the equipment causes harm to the telephone network, the local telephone company may temporarily discontinue your service and, if possible, notify you in advance. If advance notice is not practical, you will be notified as soon as possible.You will be given the opportunity to correct the problem and informed of your right to file a complaint with the FCC.

The local telephone company may make changes in its facilities, operations, or procedures that could affect the proper functioning of your equipment. If they do, you will be given adequate notice in writing to allow you an opportunity to maintain uninterrupted telephone service.

Trademarks

Centrex is a registered trademark of Lucent Technologies.

Important Safety Information

Always follow these basic safety precautions when installing and using the system:

1. Read and understand all instructions.

2. Follow all warnings and instructions marked on the product.

3. DO NOT block or cover the ventilation slots and openings. They prevent the product from overheating. DO NOT place the product in a separate enclosure or cabinet, unless proper ventilation is provided.

4. Never spill liquid on the product or drop objects into the ventilation slots and openings. Doing so may result in serious damage to the components.

5. Repair or service must be performed by a factory authorized repair facility.

6.The product is provided with a UL-CSA approved, 3-wire ground type plug.This is a safety feature. DO NOT defeat the safety purpose of the grounding type plug. DO NOT staple or otherwise attach the AC power supply cord to building surfaces.

7. DO NOT use the product near water or in a wet or damp place (such as a wet basement).

8. DO NOT use extension cords.The product must be installed within 6 feet of a grounded outlet receptacle.

9. DO NOT install telephone wiring during a lightning storm.

10. DO NOT install telephone jacks in a wet location unless

the jack is specifically designed for wet locations.

11. Never touch uninsulated wires or terminals, unless the line

has been disconnected at the paging or controller interface.

12. Use caution when installing or modifying paging or control

lines.

Support Information

Paging systems integrated with small phone systems such as Merlin Legend and Partner are supported by the National Service Assistance Center (NSAC).The main number for the NSAC is 800-628-2888. Paging systems integrated with large switches such as the DEFINITY G3 are supported by the Technical Service Center (TSC). The main number for the TSC

is 800-242-2121.

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Contents

1. Introduction..........................................................................................................................5

1.1. Voice Channel ..........................................................................................5

1.2. Background Music....................................................................................6

1.3. Signaling Channel ....................................................................................6

1.4. Other Features ..........................................................................................6

2. Before You Start ..................................................................................................................7

2.1. Select Options ..........................................................................................7

2.2. Package Contents......................................................................................7

3. Installation ............................................................................................................................9

3.1. Adding PCMZPM Modules......................................................................9

3.2. Mounting the PCM System ......................................................................9

3.2.1. Wall Mounting ..........................................................................................9

3.2.2. Rack Mounting..........................................................................................9

4. PCMALL Feature Callouts ................................................................................................11

5. System Wiring Connections................................................................................................13

5.1. Telephone System Connections................................................................13

5.2. PBX Loop Start Trunk Port......................................................................13

5.3. PBX Ground Start Trunk Port ..................................................................14

5.4. PBX Page Port ..........................................................................................15

5.5. PBX Analog Station Port ..........................................................................15

5.6. Night Ringer..............................................................................................16

5.7. Over Ride Input ........................................................................................17

6. Paging Amplifier Connections............................................................................................19

7. Background Music ..............................................................................................................21

7.1. Helpful Hints When Connecting Background Music to the

Paging Control System ............................................................................21

7.2. Background Music Continuously Supplied To All Zones

Not Being Paged ......................................................................................23

7.3. Background Music Supplied By Same Amplifier That Supplies

Paging, Music Input Available On Amplifier ..........................................23

7.4. Background Music Supplied by Same Amplifier Supplying

Paging, No Dedicated Music Input Available On Amplifier ..................23

7.5. Background Music Or Different Background Music Supplied

To A Select Group Of Zones....................................................................23

7.5.1. Zone Modules Working With 70V Speakers ............................................23

7.5.2. Zone Modules Working With Self-Amplified Speakers ..........................23

7.6. Inhibiting Background Music In Select Zones ........................................23

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8. Zone Speaker Wiring and Setup ......................................................................................................31

8.1. Wiring to 70V speakers ..........................................................................................31

8.2. Wiring to Self-Amplified Speaker or Dedicated Amplifier....................................31

8.3. Setting a Zone for Talk Back Operation ................................................................31

9. Optional Wiring..................................................................................................................................35

9.1. CPU to Emergency Signaling ................................................................................35

9.2. CPU to Re-Synch (Master Clock) ..........................................................................35

9.3. Relay Drivers ..........................................................................................................35

10. Power-Up of PCM and Associated Equipment ..............................................................................37

10.1. Power-Up Sequence ................................................................................................37

10.2. Priority Order ..........................................................................................................37

11. System Programming ........................................................................................................................39

11.1. Programming Paging Zone Groups ........................................................................40

11.1.1. To Erase A Zone Paging or Signaling Group ........................................................40

11.2. Programming Signaling Zone Groups ....................................................................40

11.3. Interface Default Timer ..........................................................................................40

11.4. Interface VOX Timer ..............................................................................................40

11.5. Dialing Timeout ......................................................................................................40

11.6. Single Amp BGM Enable ......................................................................................41

11.7. Programming Real Time Clock ..............................................................................41

11.7.1. Clock Synchronization............................................................................................41

11.8. Time-Triggered Events............................................................................................41

11.9. Setup Tone ..............................................................................................................41

11.10. Reset Default Values ..............................................................................................41

11.11. Relay Contacts ........................................................................................................42

12. Feature Codes and Defaults..............................................................................................................43

13. Paging: How To Use The PCM ........................................................................................................47

13.1. Paging Zones ..........................................................................................................47

13.2. How To Page Zones ................................................................................................47

13.3. How To Make An All-Call Page ............................................................................47

13.4. How To Page A Zone Group ..................................................................................47

13.5. How To Make A Code Call ....................................................................................48

13.6. How To Make A Pattern Code Call........................................................................48

13.7. How To Make An Echo Code Call ........................................................................49

14. Testing and Troubleshooting ............................................................................................................51

Appendix A: Applications............................................................................................................55

Appendix B: Tones ......................................................................................................................61

Appendix C: Glossary of Programmable Features ..................................................................63

Appendix D: Configuration Forms ............................................................................................65

Introduction

The PCM Paging Control System (see Figure 1-1) is an expandable zone paging and signaling system. The

LUPCMALL consists of 4 pre-assembled modules: PCMTIM, PCMCPU, PCMTBM, and a Zone Paging Module (PCMZPM). To this, you can add up to two additional Zone Paging Modules (Model: LUPCMZONE, Pec Code 5323-108, Com Code 408186039) to increase system zone paging capacity to 9 zones.

If more than 9 zones are required, expansion assemblies (Model: LUPCMADD, Pec Code 5323-107, Com Code

408186021) can be added up to a total capacity of 99 zones in 3 zone increments. Expansion assemblies include a PCMCPU and a PCMZPM.

The Paging Control System provides the following features and functions:

1.1. Voice Channel

● Zone Paging & sub zone group paging (up to 32 zone groups, each with up to 99 zones)

● Over Ride paging (using loop start or contact closure)

● Talk Back paging (centrally-amplified zones only)

● Talk/Talk Back selection per zone

● High/Low-powered central paging

● High/Low power distributed paging

● Privacy Beep on talk back zones

● Pre-Announce Tone

Figure 1-1: PCMALL Paging System Control Assembly

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1.2. Background Music

• High/Low-Power distributed (buffered for up to 50 amplified speakers)

• High/Low-Powered, using dedicated BGM amplifier

• High/Low-Powered using a single paging/BGM amplifier

• BGM Disable to individual zones

• Local BGM input on each individual zone module

1.3. Signaling Channel

• Night Ringer (90V or contact closure activation)

• Code Calling (2 types - echo & pattern)

• Emergency/Shift Change Tone (tone and duration selectable)

• Specialized modules provide Time-Triggered signaling

1.4. Other Features

• DTMF setting of all operating parameters

• Run/Program switch

• External C-form contacts

• Relay Driver output per zone

• Non-volatile memory for setup data (no backup battery required)

• Setup Tone to assist in volume setting, etc.

• Synchronization to external master clocks

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2. Before You Start

2.1. Select Options

Before setting up your system, use the checklist below to assist you in setting up and programming the PCM Paging Control System.

____ Type of Telephone Interface (loop start, ground start, page port, station port) (see System Wiring

Connections, Section 5)

____ Total Number of Paging Zones (additional Zone Paging Modules or LUPCMADD Paging Control

System Assemblies may be required) (see Installation, Section 3)

____ Zone Groups (see Section 11.1)

____ Time-Triggered Signaling (see Sections 11.2 and 11.8):

____ Signaling Zone Groups (see Section 11.8) ____ Clock Synchronization (see Section 11.7.1)

____ All-Call Capability (see Section 11.1)

____ Code Calling Capability (see Section 11.2)

____ Background Music (see Section 7):

____ Continuous in Zones Not Being Paged (see Section 7.2) ____ Cease in All Zones During Page (see Sections 7.3 and 7.4) ____ Inhibited in Some Zones (see Section 7.6) ____ Different in Some Zones (see Section 7.5)

____ Night Ring Capability (see Section 5.6)

____ Over Ride Capability (see Section 5.7):

____ From Telephone/Loop Start Trunk (see Section 5.2) ____ From External Audio Equipment (see Appendix A)

2.2. Package Contents

• 4 pre-assembled modules - PCMTIM, PCMCPU, PCMTBM, and PCMZPM

• Power Supply

• Rack Mount brackets (2)

• Installation and Use Manual

• Screws

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Figure 3-1: Rack Mounting the LUPCMALL Paging Control System

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3.1. Adding PCMZPM Modules

The LUPCMALL is pre-assembled to accommodate 3 zones of paging. If your installation requires 4 to 9 zones, you can add one or two Zone Paging Modules (PCMZPM). A total of 3 PCMZPM modules (9 zones total) can be used on a LUPCMALL assembly. If your installation requires more than 9 zones, you will need one or more LUPCMADD units to allow system expansion beyond 9 zones. Install the extra PCMZPM modules before mounting and wiring the PCM System assemblies. (Refer to the LUPCMZONE installation manual).

NOTE: LUPCMADD Paging Control System Expansion Assemblies and Zone Paging Modules can only be added when the previous assembly contains 3 PCMZPM modules; otherwise, the system will not operate.

3.2. Mounting the PCM System

The Paging Control System Assemblies can be either wall- or rack-mounted.

3.2.1. Wall Mounting

1. After assembling the unit (if necessary) hold the unit level against the surface to which it will be mounted.

2. Mark where the mounting screws should be positioned.

3. Set the assembly aside and install the screws leaving about ¼" of the screw sticking out of the surface.

4. Slip the assembly over these screws and tighten them snuggly.

3.2.2. Rack Mounting

1. Position the left side of the completed PCM assembly (any additional PCMZPM modules should have already been added) over one of the rack mounting adapters. Refer to Figure 3-1 and use the correct holes for the number of modules in the assembly (4, 5, or 6 as shown).

2. Secure the left side of the PCM system to the rack adapter using two of the truss head sheet metal screws.

3. Secure the right side of the PCM system to the other rack adapter using the holes for the number of modules in the assembly and the remaining 2 truss head sheet metal screws.

4. Secure the assembly to a 19" rack (rack screws not supplied).

3. Installation

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Figure 4-1: LUPCMALL Feature Callouts

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Descriptions and Locations

Refer to Figure 4-1.

1. TEL INT SEL Switch Bank - Sets telephone interface type for the TEL LINE jack on the PCMTIM module (see Section 5).

2. POWER - Indicates that power has been supplied to the module. One exists on each module.

3. TONE VOLUME - Controls the level of all tones produced by the PCM system.

4. BGM SRC VOLUME - Sets background music level for one mode of operation. Used only when an amplifier without a music input is used as the paging amplifier (see Section 7).

5. NIGHT RING - This RJ11 jack provides connections to the internal night ringer for both 90V analog ring signals and contact closure activation (see Section 5.6).

6. TEL LINE - Primary paging interface to telephone switch (see Section 5).

7. OVER RIDE - Secondary paging input with higher priority than TEL LINE input. Connects to either loop start trunk or dry audio signal with contact closure (see Section 5.7).

8. PCMTIM Terminal Strip - Provides connections for background music source (one mode of operation only) (see Section 7), ground start interface ground (see Section 5.3), and two sets of contact closures that change state whenever a paging zone is active (see Section 11.11).

9. PCMCPU Terminal Strip - Provides connections to background music audio signals (see Section 7), system expansion signals (see LUPCMADD manual), EM/SC signal trigger (see Section 9.1), clock resynchronization (see Section 9.2), and auxiliary power supply input.

10. PCMTBM Terminal Strip - Provides connection to main paging amplifier (see Section 6).

11. PCMZPM Terminal Strip - Provides connections to paging speakers (see Section 8), separate local background music source (see Section 7) and relay driver outputs (see Section 9.3).

12. OUTPUT Switch - Switch setting determines if PCMZPM module will be compatible with 70V (Hi) speaker systems or self-amplified speakers (Lo). Locking plate guards against accidental changes in setting.

13. BGM Jumper Field - Jumpers control whether background music is inhibited to a specific zone or all zones (see Section 7).

14. LPBGM VOLUME - Controls the level of background music in zones using self-amplified speakers. Works only with system-wide BGM, no effect if local BGM source is used.

4. LUPCMALL Feature Callouts

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15. TALK BACK Switch Bank - Determines if a 70V speaker zone will operate as a two-way hands-free talk back zone or as a one-way paging zone (see Section 8.3).

16. TALK BACK DELAY - Controls the amount of delay, after speaking stops, before the system switches to the listen mode during talk back operation (see Section 8.3).

17. TALK BACK VOLUME - Controls the audio level of the talk back signal (see Section 8.3).

18. NOISE REDUCTION - Enables or disables noise reduction during talk back listening. Mutes listen signal when audio activity is low (see Section 8.3).

19. DATA LINK - Data com port used to control other module assemblies in the PCM paging system. Uses simple RCA cables to interconnect units. (see LUPCMADD manual)

20. SYS ID - Switch bank used to set unique address of the PCMCPU module when other LUPCMADD assemblies are used in the paging system.

21. RUN/PROGRAM Switch - Switch must be set to the PROGRAM position before any system programming can be done. Return to RUN position for normal system operation. Locking plate ensures that switch will not be accidentally set to program mode. Switch only needs to be changed on the LUPCMALL main assembly. LUPCMADD assemblies always stay in RUN mode (see Section 8.1).

22. 12V DC Power Jack - PCM system power supply connects to this jack.

❑

System Wiring Connections

5.1. Telephone System Connections

The PCMTIM module is the telephone interface module for the PCM Paging Control System. The PCMTIM provides the telephone interface (including talk battery), night ringer input, emergency over ride input, and auxiliary relay contacts for the system. The module is also responsible for all tone signaling features.

The PCM connects to virtually any telephone system: PBX station lines and CO lines, PBX loop start trunk ports, PBX ground start trunk ports, and page ports (using contact closure).

Interface installation consists of setting dip switches and connecting with modular (RJ11) telephone plugs.

Refer to the appropriate procedure in this section to connect the PCM System to the telephone system.

Note: In all cases, make sure that power to the PCM is off and any amplifiers being connected to it before performing the installation.

5.2. PBX Loop Start Trunk Port

In this configuration, the unit supplies a 48V talk battery and loop current detection. When the unit detects a loop resistance between Tip and Ring, it activates. When the loop opens, the page ends. The unit follows the status of the trunk port; default and VOX timers are not used in this mode.

1. Make sure that power is off and all connections completed before proceeding.

2. Move the dip switches on the module to the position shown in Figure 5-1 below. Use the tip of a pen or other

pointed instrument to move the switches.

Figure 5-1: Loop Start Telephone Selector Switch

3. Use a modular telephone cord to connect the module to the phone system. Plug one end of the cord into the Loop Start Trunk (using a modular jack) and the other end in to the TEL LINE jack on the module.

The center two conductors are Tip and Ring (48V DC) and have a specific polarity. If the polarity of the trunk is opposite, you can use a reversing modular cord to make the connection or reverse the connection through a modular block. Refer to Figure 5-2 for more information.

Figure 5-2: Loop Start/Ground Start RJ11

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IMPORTANT: The polarity of the Tip & Ring contacts of the RJ11 jack for the Tel Line and Over Ride were chosen

so that when a standard modular cord (one with the tops of both end plugs on the same side of the flat cable) is used to connect the PCM to a modular wall block, the modular block G (Tip) terminal will be positive with respect to the R (Ring) terminal. Because of variations in types of modular cords and when stripping a modular cord for direct connection, always check the polarity of the center conductors or R & G terminals to determine Tip & Ring (the positive lead is Tip and the negative lead is Ring).

5.3. PBX Ground Start Trunk Port

In this configuration, the unit supplies 48V talk battery and loop current detector. When the ground start trunk grounds Ring, the unit responds by closing the connection to Tip, which completes the access procedure. When the loop is opened, the page ends. The unit follows the status of the trunk; default and VOX timers are not used in this mode.

1. Make sure that power is off and all connection completed before proceeding.

2. Move the dip switches on the module to the position shown in Figure 5-3 below. Use the tip of a pen or other

pointed instrument to move the switches.

Figure 5-3: Ground Start Telephone Selector Switch

3. Use a modular telephone cord to connect the module to the phone system. Plug one end of the cord into the

Ground Start Trunk (using a modular jack) and the other end in to the TEL LINE jack on the module.

The center two conductors are Tip and Ring (48V DC) and are polarity sensitive. If the polarity of the trunk is opposite, you can use a reversing modular cord to make the connection or reverse the connection through a modular block. Refer to Figure 5-4 for more information.

Figure 5-4: Loop Start RJ11 Connections

IMPORTANT: The polarity of the Tip & Ring contacts of the RJ11 jack for the Tel Line and Over Ride were chosen

so that when a standard modular cord (one with the tops of both end plugs on the same side of the flat cable) is used to connect the PCM to a modular wall block, the modular block G (Tip) terminal will be positive with respect to the R (Ring) terminal. Because of variations in types of modular cords, and when stripping a modular cord for direct connection, always check the polarity of the center conductors or R & G terminals to determine Tip & Ring (the positive lead is Tip and the negative lead is Ring).

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4. Use 24-gauge solid wire to connect the GND ST terminal on the module to the PBX ground. This is typically the AC ground for the PBX system.

IMPORTANT: It is very important that no other terminals of the PCM system connect to AC ground when using the

ground start interface. Also, the case of the PCM system cannot be connected to AC ground. If the system is not working and no PCM terminals (except the GND ST terminal) are directly connected to AC ground, there may be an indirect connection. Check the connections to any equipment with a 3-wire AC plug. Make sure that unbalanced inputs and outputs of this equipment are isolated using a model LUWMTIA transformer (Corn Code 405891680) before connecting the equipment to the PCM.

The PA OUT and HPBGM terminals on the PCM do not have to be ground-isolated.

5.4. PBX Page Port

In this configuration, the unit responds to a contact shorting the closure source to its return. When the short is removed, the page ends. Audio is provided to the system through a separate pair of leads.

1. Make sure that power is off and all connections completed before proceeding.

NOTE:

talk back.

2. Move the dip switches on the module to the position shown in Figure 5-5 below. Use the tip of a pen or other pointed instrument to move the switches.

3. Use a modular telephone cord to connect the module to the phone system. Plug one end of the cord into the Page Port and the other end in to the TEL LINE jack on the module.

The center two conductors are used for dry audio and the connectors on either side are connected to the page port contact closure. The maximum resistance of the page port contact closure is 1000 ohms. Refer to Figure 5-6 below for more information.

Make sure that the page port produces DTMF tones. The page port must also be hi-directional in order to use

Figure 5-5: Page Port Telephone Selector Switch

Figure 5-6: Page Port RJ11 Connections

5.5. PBX Analog Station Port

In this configuration, the unit answers after the first full ring. As soon as it answers, the default timer is started. The

default timer determines the maximum length of any page. When a paging zone is selected, the VOX timer is started (if enabled). This timer repeatedly resets as long as audio is detected on the line. If no audio is detected within the VOX time period, the page will end. If audio continues to be detected, the default timer will control page length.

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The unit will also respond to CPC pulses (short losses of loop current). When a CPC pulse is detected, the unit will immediately drop the line.

1. Make sure that power is off and all connections completed before proceeding.

2. Move the TEL INT SEL (dip) switches on the module to the position shown in Figure 5-7 below. Use the tip of a pen or other pointed instrument to move the switches.

Figure 5-7: Station Telephone Selector Switch

3. Use a modular telephone cord (minimum 2-conductor) to connect the module to the phone system. The center two conductors are Tip and Ring and are not polarity sensitive (see Figure 5-8 below). Plug one end of the cord into the PBX or CO modular jack and the other end in to the TEL LINE jack on the module.

Figure 5-8: Station RJ11 Connections

4. Set Default and VOX timers. See System Programming, Section 11.

The default timeout is factory set to 30 seconds, and the VOX timeout is set to 6 seconds. If both the default

Note:

and VOX timers are inhibited, the only way to disconnect the system from the station line is the CPC pulse.

5.6. Night Ringer

The PCM Night Ringer signaling feature is designed to alert personnel to incoming calls after normal business

hours. The feature can be activated either by a 90V ring signal or by a contact closure. In the factory default configuration, the night ringer sounds in all zones; however, a zone group can be programmed so that the night

ringer can sound only in a user-selected number of zones.

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The night ringer normally sounds a simulated ring tone but can be programmed to sound a chime tone. Refer to System Programming, Section 11 to set up a night ringer zone group or to change to ringer tone.

To physically connect the night ringer wiring:

1. Make sure that power is off.

2. Plug a modular cord into the NIGHT RING (RJ11) jack.

The center conductors of the plug are used for the 90V ring signal (see Figure 5-9). The flanking conductors are used

for contact closure activation. Maximum contact resistance for contact closure activation is 1000 ohms.

Figure 5-9: Night Ring RJ11 Connections

Note: The Night Ring feature has priority just above background music. There is a 5-second delay after the night ring stops before background music is restored (bridges inter-ring pause).

5.7. Over Ride Input

The Over Ride is a non-programmable feature that lets the caller take priority over all paging functions and make a

system-wide page to all speakers. The feature can be activated using a loop start trunk or dedicated telephone.

Provisions are also included to interface with other signaling equipment.

The Over Ride feature includes a quad beep pre-announce tone that can be enabled or inhibited. (The default is inhibited). See System Programming, Section 11 to enable the tone.

1. Make sure that power is off and all connections completed before proceeding.

2. Plug modular cord into OVER RIDE (RJ-11) jack.

The center two conductors interface directly to a Loop Start Trunk or dedicated phone (see Figure 5-10). When the trunk becomes active, the PCM goes into Over Ride mode.

Figure 5-10: Over Ride Loop Start RJ11 Connections

Also, see connecting to an External Audio Source, page 53.

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6. Paging Amplifier Connections

The paging amplifier audio connections are made to the PCMTBM module terminal strip. If the amplifier has a paging control input, this is connected to the RLY TWO terminals on the PCMTIM module (see Figure 6-1). The paging amplifier must have a balanced 600-ohm input. The amplifier should be located close to the PCM system to keep cable lengths reasonably short.

NOTE: To make all audio connections, use 22 AWG shielded, twisted pair on all wire runs. Com Code: 401882956, PEC Code: 2734-SPK.

CAUTION: Make sure the amplifier is turned off or unplugged before wiring.

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The PCM system is very flexible in how it can provide background music throughout the system:

• Background music can be continuously supplied to all zones not being paged. (Requires two amplifiers of the same power rating.)

• Background music can be supplied by the same amplifier that is supplying paging. (Music input is available on amplifier.)

• Background music can be supplied by same amplifier that is supplying paging. (No dedicated music input available on amplifier.)

• Background music or different background music can be supplied to a select group of zones.

• Background music can be supplied to self-amplified (LO-PWR) zones.

• Background music can be inhibited in select groups.

The BGM SRC terminals are used to control background music operations when using a single power amplifier that does not provide a separate music input. This feature is only used when a single amplifier will be used for both background music and paging (background music is lost in all zones when a page is made).

NOTE

: This input and its associated control is not used when using amplifiers with separate music inputs and

paging control terminals because background music is supplied directly to the amplifier.

7.1. Helpful Hints When Connecting Background Music to the Paging Control System

1. When using the BGMSRC (background music source) input on the PCMTIM as input for background music, the music is muted to all speakers when any zone is selected. The source input signal is line level.

2. When the HPBGM (high-powered background music) input on the PCMCPU is used, music is muted only in the zone selected. The source input has to be an amplified signal.

3. When the LPBGM (low power background music) input on the PCMCPU is used as an input for background music, music is muted only to the zone selected. In this application, either amplified speakers or an amplifier per zone is used. PCMZPM output power switch is set to LO-PWR. The input background music is line level.

4. When the Local BGM input on the PCMZPM is selected as input for background music, music is muted only to the zone selected. An amplified signal is required at this input if using 70V speakers.

NOTE:

When you want to mute the background music only to the zone in which you are paging, use 2, 3 or 4.

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7. Background Music

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