Fire-Lite Alarms 411UD User manual

Digital Alarm
Communicator/Transmitter
411UD
P/N 50759:C ECN 00-106
C
Document #50759
3/07/00 Rev.
© 2000

LimWarLg.p65 01/10/2000
An automatic fi e ala m system–typically made up of smoke
detectors, heat detectors, ma ual pull statio s, audible war -
i g devices, a d a fire alarm co trol with remote otificatio
capability–ca provide early war i g of a developi g fire.
Such a system, however, does ot assure protectio agai st
property damage or loss of life resulti g from a fire.
The Ma ufacturer recomme ds that smoke a d/or heat detec-
tors be located throughout a protected premise followi g the
recomme datio s of the curre t editio of the Natio al Fire
Protectio Associatio Sta dard 72 (NFPA 72),
ma ufacturer's recomme datio s, State a d local codes, a d
the recomme datio s co tai ed i the Guide for Proper Use
of System Smoke Detectors, which is made available at o
charge to all i stalli g dealers. A study by the Federal Emer-
ge cy Ma ageme t Age cy (a age cy of the U ited States
gover me t) i dicated that smoke detectors may ot go off i
as ma y as 35% of all fires. While fire alarm systems are de-
sig ed to provide early war i g agai st fire, they do ot guar-
a tee war i g or protectio agai st fire. A fire alarm system
may ot provide timely or adequate war i g, or simply may ot
fu ctio , for a variety of reaso s:
Smoke detecto s may ot se se fire where smoke ca ot
reach the detectors such as i chim eys, i or behi d walls, o
roofs, or o the other side of closed doors. Smoke detectors
also may ot se se a fire o a other level or floor of a build-
i g. A seco d-floor detector, for example, may ot se se a
first-floor or baseme t fire.
Pa ticles of combustion o "smoke" from a developi g fire
may ot reach the se si g chambers of smoke detectors be-
cause:
• Barriers such as closed or partially closed doors, walls, or
chim eys may i hibit particle or smoke flow.
• Smoke particles may become "cold," stratify, a d ot reach
the ceili g or upper walls where detectors are located.
• Smoke particles may be blow away from detectors by air
outlets.
• Smoke detectors may be draw i to air retur s before
reachi g the detector.
The amou t of "smoke" prese t may be i sufficie t to alarm
smoke detectors. Smoke detectors are desig ed to alarm at
various levels of smoke de sity. If such de sity levels are ot
created by a developi g fire at the locatio of detectors, the
detectors will ot go i to alarm.
Smoke detectors, eve whe worki g properly, have se si g
limitatio s. Detectors that have photoelectro ic se si g
chambers te d to detect smolderi g fires better tha flami g
fires, which have little visible smoke. Detectors that have io -
izi g-type se si g chambers te d to detect fast-flami g fires
better tha smolderi g fires. Because fires develop i differ-
e t ways a d are ofte u predictable i their growth, either
type of detector is ecessarily best a d a give type of detec-
tor may ot provide adequate war i g of a fire.
Smoke detectors ca ot be expected to provide adequate
war i g of fires caused by arso , childre playi g with
matches (especially i bedrooms), smoki g i bed, a d viole t
explosio s (caused by escapi g gas, improper storage of
flammable materials, etc.).
Heat detectors do ot se se particles of combustio a d
alarm o ly whe heat o their se sors i creases at a prede-
termi ed rate or reaches a predetermi ed level. Rate-of-rise
heat detectors may be subject to reduced se sitivity over time.
For this reaso , the rate-of-rise feature of each detector
should be tested at least o ce per year by a qualified fire pro-
tectio specialist.
Heat detectors are desig ed to protect
property, ot life.
IMPORTANT! Smoke detecto s must be i stalled i the
same room as the co trol pa el a d i rooms used by the sys-
tem for the co ectio of alarm tra smissio wiri g, commu i-
catio s, sig ali g, a d/or power.
If detectors are ot so lo-
cated, a developi g fire may damage the alarm system, crip-
pli g its ability to report a fire.
Audible wa ning devices such as bells may ot alert people
if these devices are located o the other side of closed or
partly ope doors or are located o a other floor of a buildi g.
A y war i g device may fail to alert people with a disability or
those who have rece tly co sumed drugs, alcohol or medica-
tio . Please ote that:
• Strobes ca , u der certai circumsta ces, cause seizures
i people with co ditio s such as epilepsy.
• Studies have show that certai people, eve whe they
hear a fire alarm sig al, do ot respo d or comprehe d the
mea i g of the sig al. It is the property ow er's respo sibil-
ity to co duct fire drills a d other trai i g exercise to make
people aware of fire alarm sig als a d i struct them o the
proper reactio to alarm sig als.
• I rare i sta ces, the sou di g of a war i g device ca
cause temporary or perma e t heari g loss.
A fi e ala m system will ot operate without a y electrical
power. If AC power fails, the system will operate from sta dby
batteries o ly for a specified time a d o ly if the batteries
have bee properly mai tai ed a d replaced regularly.
Equipment used in the system may ot be tech ically com-
patible with the co trol. It is esse tial to use o ly equipme t
listed for service with your co trol pa el.
Telephone lines eeded to tra smit alarm sig als from a
premise to a ce tral mo itori g statio may be out of service
or temporarily disabled. For added protectio agai st tele-
pho e li e failure, backup radio tra smissio systems are rec-
omme ded.
The most common cause of fire alarm malfu ctio is i ade-
quate mai te a ce. To keep the e tire fire alarm system i
excelle t worki g order, o goi g mai te a ce is required per
the ma ufacturer's recomme datio s, a d UL a d NFPA sta -
dards. At a mi imum, the requireme ts of Chapter 7 of NFPA
72 shall be followed. E viro me ts with large amou ts of
dust, dirt or high air velocity require more freque t mai te-
a ce. A mai te a ce agreeme t should be arra ged
through the local ma ufacturer's represe tative. Mai te a ce
should be scheduled mo thly or as required by Natio al a d/
or local fire codes a d should be performed by authorized pro-
fessio al fire alarm i stallers o ly. Adequate writte records
of all i spectio s should be kept.
While a fire alarm system may lower i sura ce
rates, it is ot a substitute for fire i sura ce!
Fi e Ala m System Limitations

LimWarLg.p65 01/10/2000
WARNING - Several differe t sources of power ca be co -
ected to the fire alarm co trol pa el. Disco ect all sources
of power before servici g. Co trol u it a d associated equip-
me t may be damaged by removi g a d/or i serti g cards,
modules, or i terco ecti g cables while the u it is e ergized.
Do ot attempt to i stall, service, or operate this u it u til this
ma ual is read a d u derstood.
CAUTION -
System Reaccepta ce Test after Software
Cha ges.
To e sure proper system operatio , this product
must be tested i accorda ce with NFPA 72 Chapter 7 after
a y programmi g operatio or cha ge i site-specific soft-
ware. Reaccepta ce testi g is required after a y cha ge, ad-
ditio or deletio of system compo e ts, or after a y modifica-
tio , repair or adjustme t to system hardware or wiri g.
All compo e ts, circuits, system operatio s, or software fu c-
tio s k ow to be affected by a cha ge must be 100% tested.
I additio , to e sure that other operatio s are ot i advert-
e tly affected, at least 10% of i itiati g devices that are ot
directly affected by the cha ge, up to a maximum of 50 de-
vices, must also be tested a d proper system operatio veri-
fied.
This system meets NFPA requireme ts for operatio at
0-49° C/32-120° F a d at a relative humidity of 85% RH ( o -
co de si g) at 30° C/86° F. However, the useful life of the
system's sta dby batteries a d the electro ic compo e ts
may be adversely affected by extreme temperature ra ges
a d humidity. Therefore, it is recomme ded that this system
a d all peripherals be i stalled i a e viro me t with a omi-
al room temperature of 15-27° C/60-80° F.
Ve ify that wi e sizes a e adequate for all i itiati g a d
i dicati g device loops. Most devices ca ot tolerate more
tha a 10% I.R. drop from the specified device voltage.
Like all solid state elect onic devices, this system may
operate erratically or ca be damaged whe subjected to light-
i g-i duced tra sie ts. Although o system is completely
immu e from light i g tra sie ts a d i terfere ces, proper
grou di g will reduce susceptibility.
Overhead or outside
aerial wiri g is ot recomme ded, due to a i creased sus-
ceptibility to earby light i g strikes.
Co sult with the Tech i-
cal Services Departme t if a y problems are a ticipated or
e cou tered.
Disconnect AC powe and batte ies prior to removi g or i -
serti g circuit boards. Failure to do so ca damage circuits.
Remove all elect onic assemblies prior to a y drilli g, fili g,
reami g, or pu chi g of the e closure. Whe possible, make
all cable e tries from the sides or rear. Before maki g modifi-
catio s, verify that they will ot i terfere with battery, tra s-
former, a d pri ted circuit board locatio .
Do not tighten sc ew te minals more tha 9 i -lbs.
Over-tighte i g may damage threads, resulti g i reduced
termi al co tact pressure a d difficulty with screw termi al
removal.
Though designed to last many yea s, system compo e ts
ca fail at a y time. This system co tai s static-se sitive
compo e ts. Always grou d yourself with a proper wrist strap
before ha dli g a y circuits so that static charges are re-
moved from the body. Use static-suppressive packagi g
to protect electro ic assemblies removed from the u it.
Follow the inst uctions i the i stallatio , operati g, a d
programmi g ma uals. These i structio s must be followed
to avoid damage to the co trol pa el a d associated
equipme t. FACP operatio a d reliability depe d upo
proper i stallatio by authorized perso el.
Adhere ce to the followi g will aid i problem-free
i stallatio with lo g-term reliability:
WARNING: This equipme t ge erates, uses, a d ca
radiate radio freque cy e ergy a d if ot i stalled a d
used i accorda ce with the i structio ma ual, may
cause i terfere ce to radio commu icatio s. It has
bee tested a d fou d to comply with the limits for class
A computi g device pursua t to Subpart B of Part 15 of
FCC Rules, which is desig ed to provide reaso able
protectio agai st such i terfere ce whe operated i a
commercial e viro me t. Operatio of this equipme t i
a reside tial area is likely to cause i terfere ce, i which
case the user will be required to correct the i terfere ce
at his ow expe se.
Canadian Requi ements
This digital apparatus does ot exceed the Class A
limits for radiatio oise emissio s from digital
apparatus set out i the Radio I terfere ce Regulatio s
of the Ca adia Departme t of Commu icatio s.
Le prese t appareil umerique 'emet pas de bruits
radioelectriques depassa t les limites applicables aux
appareils umeriques de la classe A prescrites da s le
Regleme t sur le brouillage radioelectrique edicte par le
mi istere des Commu icatio s du Ca ada.
FCC Wa ning
Installation P ecautions

4 Document #50759 Rev.C 3/07/00 P/N 50759:C
Notes

Document 50759 Rev. C 3/07/00 P/N: 50759:C 5
CHAPTER 1: P oduct Desc iption .........................................................................................................................8
1.1: Product Features..........................................................................................................................................8
FIGURE 1-1: 411UD Digital Communicator......................................................................................8
1.2: pecifications ..............................................................................................................................................9
1.3: Circuits........................................................................................................................................................10
1.3.1: Power Requirements .........................................................................................................................10
1.3.2: Channels/Inputs.................................................................................................................................10
1.3.3: Primary and econdary Phone Lines................................................................................................10
1.3.4: Earth Ground.....................................................................................................................................10
1.4: Controls and Indicators ...............................................................................................................................11
FIGURE 1-2: 411UD Controls and Indicators ....................................................................................11
1.5: Digital Communicator Operation................................................................................................................12
1.6: Telephone Requirements and Warnings ......................................................................................................12
1.6.1: Telephone Circuitry - PH1 & PH2....................................................................................................12
1.6.2: Digital Communicator: .....................................................................................................................12
1.6.3: Telephone Company Rights and Warnings:......................................................................................13
1.6.4: For Canadian Applications................................................................................................................13
1.7: Operational Modes ......................................................................................................................................14
1.7.1: Normal Mode ....................................................................................................................................14
1.7.2: Real Time Clock Mode.....................................................................................................................14
1.7.3: Program Mode...................................................................................................................................14
1.7.4: Troubleshoot Mode...........................................................................................................................14
1.7.5: Default Mode ....................................................................................................................................14
CHAPTER 2: Installation.........................................................................................................................................15
2.1: Mounting Options .......................................................................................................................................15
FIGURE 2-1: 411UD Enclosure..........................................................................................................15
2.2: Operating Power..........................................................................................................................................15
2.3: Input Channels.............................................................................................................................................15
FIGURE 2-2: Fire•Lite M -9200 Connection to 411UD....................................................................16
FIGURE 2-3: Notifier AFP-200 Connection to 411UD......................................................................16
FIGURE 2-4: tyle B Channel Connections........................................................................................17
2.4: Output Circuits............................................................................................................................................18
FIGURE 2-5: Programmable Relay.....................................................................................................18
2.5: Telephone Circuits.......................................................................................................................................19
FIGURE 2-6: Wiring Phone Jacks.......................................................................................................19
2.6: Optional Programmer..................................................................................................................................20
FIGURE 2-7: Programmer Connection to 411UD ..............................................................................20
2.7: UL Power-limited Wiring Requirements ....................................................................................................21
CHAPTER 3: Modes of Ope ation..........................................................................................................................22
3.1: Normal Mode ..............................................................................................................................................22
3.1.1: Programmer Key Functions ..............................................................................................................23
FIGURE 3-1: Programmer Keypad.....................................................................................................23
3.1.2: Programmer Display.........................................................................................................................24
3.2: Real Time Clock Mode ...............................................................................................................................24
3.3: Program Mode.............................................................................................................................................26
3.3.1: DACT Programming .........................................................................................................................27
TABLE 3-1: Ademco Contact ID Format - Primary ...........................................................................29
TABLE 3-2: 4+2 tandard and 4+2 Express Formats - Primary.........................................................29
TABLE 3-3: All 3+1, 4+1 and 4+2 Expanded Formats - Primary ......................................................30
TABLE 3-4: Ademco Contact ID Format - econdary .......................................................................33
Table of Contents

Table of Contents
6 Document #50759 Rev. C 3/07/00 P/N: 50759:C
TABLE 3-5: 4+2 tandard and 4+2 Express Formats - econdary.....................................................33
TABLE 3-6: All 3+1, 4+1 and 4+2 Expanded Formats - econdary ..................................................34
3.4: Default Mode...............................................................................................................................................39
3.5: Troubleshoot Mode......................................................................................................................................39
FIGURE 3-2: Handset/ peaker Connection ........................................................................................40
CHAPTER 4: Cent al Station Communications....................................................................................................41
TABLE 4-1: Format election Addresses ( 20 and 50) Programming................................................42
TABLE 4-2: Format election Address Explanation...........................................................................43
4.0.1: Transmittal Priorities.........................................................................................................................44
4.0.2: Ademco Contact ID Format Event Code Description.......................................................................45
TABLE 4-3: Compatible UL Listed Receivers....................................................................................46
CHAPTER 5: Remote Site Upload/Download........................................................................................................47
5.1: General ........................................................................................................................................................47
5.1.1: ecurity Features...............................................................................................................................48
5.2: Downloading to the Communicator ............................................................................................................49
5.3: Uploading From the Communicator............................................................................................................49
5.4: imultaneous Data Transfers.......................................................................................................................50
Appendix A: Programming Sheets .......................................................................................................................51
A.1: Digital Communicator Options Program heets .......................................................................................51
A.2: Digital Communicator Options Program heet (Factory Defaults) ..........................................................53
Appendix B: Event Codes/Transmission Format Programming Sheets ..........................................................55
B.1: 4+2 tandard & 4+2 Express Formats Primary Central tation ................................................................55
B.2: 4+2 tandard & 4+2 Express Formats econdary Central tation ............................................................55
B.3: 4+2 tandard & 4+2 Express Formats Primary Central tation ................................................................56
B.4: 4+2 tandard & 4+2 Express Formats econdary Central tation ............................................................56
B.5: All 3+1, All 4+1 and 4+2 Expanded Formats for Primary Central tation ...............................................57
B.6: All 3+1, All 4+1 and 4+2 Expanded Formats for econdary Central tation ...........................................57
B.7: All 3+1, All 4+1 and 4+2 Expanded Formats for Primary Central tation (Factory Defaults) ................57
B.8: All 3+1, All 4+1 and 4+2 Expanded Formats for econdary Central tation (Factory Defaults) ...........57
B.9: Ademco Contact ID Format Primary Central tation ................................................................................58
B.10: Ademco Contact ID Format econdary Central tation ..........................................................................58
B.11: Ademco Contact ID Format Primary Central tation (Factory Defaults) ...............................................59
B.12: Ademco Contact ID Format econdary Central tation (Factory Defaults) ...........................................59
Appendix C: Ademco Contact I Format Event Code escription .................................................................60
Appendix : Wire Requirements .........................................................................................................................64
TABLE 5-1: Wire pecifications.........................................................................................................64
Appendix E: Operational Modes ..........................................................................................................................65
TABLE 5-2: Operational Modes..........................................................................................................65

This digital communicator has been designed to comply with standards set forth by the following regulatory agencies:
• Underwriters Laboratories tandard
• NFPA 72 National Fire Alarm Code
• CAN/ULC - 527-M87 tandard for Control Units for Fire Alarm ystems
NFPA Standards
This digital communicator complies with the NFPA 72 National Fire Alarm Code for:
Central tation ignaling ystems Protected Premises Unit (Automatic, Manual and Waterflow)
Local Fire Alarm ystems (Automatic, Manual, Waterflow and prinkler upervisory)
Proprietary Fire Alarm ystems (Protected Premises Unit)
Remote tation Fire Alarm ystems
Automatic Fire Detectors
Installation, Maintenance and Use of Notification Appliances for Fire Alarm ystems
Inspection, Testing and Maintenance for Fire Alarm ystems
Underwriters Laboratories ocuments:
UL 217 moke Detectors, ingle and Multiple tation
UL 268 moke Detectors for Fire Protective ignaling ystems
UL 346 Waterflow Indicators for Fire Protective ignaling ystems
UL 464 Audible ignaling Appliances
UL 521 Heat Detectors for Fire Protective ignaling ystems
UL 864 tandard for Control Units for Fire Protective ignaling ystems
UL 1076 Proprietary Burglar Alarm Units and ystems
UL 1481 Power upplies for Fire Protective ignaling ystems
UL 1635 Digital Alarm Communicator ystem Units
UL 1638 Visual ignaling Appliances
UL 1971 ignaling Devices for Hearing Impaired
CAN/ULC - 524-M91 tandard for Installation of Fire Alarm ystems
Other:
NEC Article 250 Grounding
NEC Article 300 Wiring Methods
NEC Article 760 Fire Protective ignaling ystems
Applicable Local and tate Building Codes
Requirements of the Local Authority Having Jurisdiction (LAHJ)
Befo e p oceeding, the installe should be familia with the following documents.
Document #50759 Rev. C 3/07/00 P/N 50759:C 7

P oduct Desc iption
8 Document #50759 Rev.C 3/07/00 P/N 50759:C
CHAPTER 1 Product Description
The 411UD is a four input/channel, dual line, digital communicator which can be used as a slave communicator with
UL listed fire and nonfire control panels. The four inputs are compatible with normally open relay contacts, require
End-Of-Line (EOL) resistors, are supervised and are fully programmable. The 411UD interfaces with the public
switched telephone network and is compatible with most central station receivers. A total of fifteen popular commu-
nications formats are supported, including Ademco Contact ID. The communicator also contains a unique DACT
option that eliminates 'dialer runaway'. It restricts the transmission of any trouble event to 1 attempts in a 24 hour
period. Power supplied must be 12 or 24 volts, filtered and nonresettable. Accessories include the Fire-Watch 411
eries DACT Programmer (Model PRO-411) as well as the PK-411 Windows® 95 based remote site programming
software. The 411UD comes in a small 6.841" (17.376 cm) X 4.595" (11.671 cm) X 1.00" (2.54 cm) metal enclosure,
providing a variety of mounting options.
1.1 P oduct Featu es
• Four input channels
• Dual telephone lines
• Dual telephone line voltage detect
• Program locations for entering up to 20-digit
central station and service terminal
telephone numbers
• urface mount technology
• Compact in size
• eparate external keypad and display
✓provides means of programming digi-
tal communicator in program mode
✓provides means of testing phone
circuits in troubleshoot mode
• 6.841" (17/376 cm) X 4.595" (11.671 cm) X 1.0" (2.54 cm) metal enclosure facilitates internal and external
control panel mounting
• Communicates vital status of monitored control panel:
✓fire alarm
✓host control panel trouble
✓fire supervisory
✓process monitor
✓AC (mains) power loss (programmable)
✓security alarm
✓other
• Communicates vital status of 411UD digital communicator:
✓digital communicator troubles
✓telephone Line 1 and 2 voltage fault
✓Primary Central tation number communication fault
✓econdary Central tation number communication fault
✓system off-normal (local Program Mode entered)
✓24 Hour normal test
✓24 Hour abnormal test (24 hour test message with previously reported alarm or trouble still active)
FIGURE 1-1:411UD Digital Communicato
411udcvr.cdr

Document #50759 Rev. C 3/07/00 P/N 50759:C 9
Specifications
• Individual LEDs for:
✓Communication Fail (visible with cover on)
✓DACT Trouble (visible with cover on)
✓Channel Active (visible with cover on)
✓Primary Phone Line (PH1) active
✓econdary Phone Line (PH2) active
✓Modem Active
• Piezo sounder
• Local piezo silence switch which silences onboard piezo sounder (accessible without removing cover)
• Real time clock
• Extensive transient protection
• One Form-C relay, fully programmable to activate for the following conditions:
✓fire alarm
✓host control panel trouble
✓fire supervisory
✓process monitor
✓total communication failure
✓AC loss
✓DACT trouble (factory default for relay)
✓security alarm
• PK-411 Remote Upload/Download Kit
• Industry-first, UL recognized 'dialer runaway' feature'
1.2 Specifications
Operating Power
The 411UD may be powered from UL listed control panels that output nonresettable and power-limited 12 or 24
VDC power. The configuration of Jumper J4 determines whether 12 VDC power is to be supplied directly to the
411UD circuit board or 24 VDC power is to be supplied and then internally regulated down internally to 12 VDC.
C Power - TB1 Terminals 4(+) and 5(-), Terminal 6 is Earth Ground
• J4 Jumper removed - Filtered, nonresettable and power-limited 24 VDC (nominal) power must be supplied at
TB1 Terminals 4(+) and 5(-). Operating voltage provided must be within 21.3 to 24.0 VDC (UL tested range:
-15%, +10%). Current requirements are 100 mA in standby and 170 mA1 while communicating.
• J4 Jumper installed - Filtered, nonresettable and power-limited 12 VDC (nominal) power must be supplied at
TB1 Terminals 4(+) and 5(-). Operating voltage provided must be within 11.2 to 12.4 VDC (UL tested range:
-15%, +10%). Current requirements are 100 mA in standby and 170 mA1 while communicating.
Channels/Inputs2 - TB2 Terminals 1 through 8
Programmable Channels 1 through 4
Power-limited circuitry
Fully supervised
Operation: All channels NFPA tyle B (Class B). Requires Normally Open contact to trigger
1. A maximum of 300 mA is possible with all input channels shorted, the 411UD communicating, the Programmer connected and
Lamp Test active.
2. Channels/inputs do not support 2-wire smoke detectors.

Ci cuits
10 Document #50759 Rev.C 3/07/00 P/N 50759:C
Normal Operating Voltage: 12 VDC
Maximum Line Resistance: 100 ohms per channel
Alarm Current: 3.34 mA
End-Of-Line Resistor: 2.2K ohms, ½ watt (P/N 27070)
hort Circuit Current: 3.8 mA per channel/input
One Form-C Relay - TB1 Terminals 1 through 3
Contact rating: 2.0 amps @ 30 VDC (resistive)
1.3 Ci cuits
The 411UD circuit board utilizes surface mount technology and contains a MicroController Unit (MCU), dual modu-
lar phone line jacks, piezo sounder, piezo silence switch, one programmable relay and two connectors for input, out-
put and power wiring.
1.3.1 Power Requirements
Voltage for the digital communicator may be a power-limited, filtered, nonresettable nominal 12 VDC [11.2 to
12.4 VDC (UL tested range: -15%, +10%)] or nominal 24 VDC [21.3 to 24.0 VDC (UL tested range: -15%,
+10%)]. Jumper J4 is used to select the power source.
1.3.2 Channels/Inputs
Four input channels are provided on the 411UD digital communicator which are used for connection to the control
panel being monitored. Each input can be programmed to monitor the control panel for:
• fire alarm activation
• process monitoring activation
• trouble activation
• fire supervisory activation
• security alarm activation
• AC loss activation
Each input channel is configured as a Class B circuit and must be wired to a Normally Open contact.
1.3.3 Primary and Secondary Phone Lines
Modular jacks are used to interface the primary and secondary phone lines to the public telephone network.
1.3.4 Earth Ground
Connect a separate earth ground wire to TB1 terminal 6 for transient protection.