DATASHEETS
Accessories
·
NCVD – Non-Contact Voltage Detector.
·
761-WB1-W / 761-WB2-W – Surface Mount Wall Boxes.
·
RTK – Riser Tube Kit.
·
9A-00-0 – Customer Bridge Module Adapter.
·
3000 Series – Indoor/Outdoor Ancillary Housing.
·
150C – Subscriber Protector Cover (for Station Applications).
·
155 & 155-01 – Ground Lug Connectors.
·
160G & 160 GS – Protector Enclosure.
·
B1, 322 & 382 – Module Adapters.
DSL
·
BIX-5UVS-12 – 5 Pair xDSL POTS Splitter with 25 Pair BIX Distribution Connector.
·
372S-12LP – xDSL POTS Splitter Module for VDSL2/ADSL2+, IPTV Services.
·
80-800 – Indoor VDSL2 Balun.
·
103-105-3C1ES-N, 103-105-3C1FS-N – Solid State 240V and 300V Protector Modules.
·
761SM-12 – Surface Mount Wall Jack with xDSL Filter.
·
69M Series – Sealed Wire Terminal.
·
68M-2S – Sealed Wire Terminal with Home Security Connections.
·
68M-2-1T – Two Line Sealed Wire Terminal with RJ-11 Tail/Connector.
·
68M-12-1T – Twelve-Line Sealed Wire Terminal with RJ-21 Tail/Connector.
·
68M-1-1T – Single Line Sealed WIre Terminal with RJ-11 Tail/Connector.
·
68M Series – Sealed Wire Terminal.
·
170 Series – Outdoor Sealed Wire Terminal Enclosure.
·
168 Series – Outdoor Sealed Wire Terminal Enclosure.
·
751B – Surface Mount Gel-Sealed Telephone Jack.
·
WTB-025-C04 – 25 Line Sealed Wire Terminal with 4FT CAT3 Cable Stub.
·
68M-12-C04 – Twelve Line Sealed Wire Terminal with 4ft. Cat3 Cable Stub.
·
3310D Series – DSL POTS Splitter Outdoor Ancillary Devices.
·
ISB – Intercom System Bypass.
·
97FB-S – VDSL POTS Splitter Module with VDSL Output on Coax Port.
·
372S-12 – xDSL POTS Splitter Module for VDSL2/ADSL2+, IPTV Services.
·
80-100 – Indoor DSL Filter.
·
80-200 – Indoor DSL Filter With Data Port.
·
80-400 – Indoor DSL Filter with Data Port.
·
80-410V – Indoor DSL POTS Splitter Module for VDSL2/ADSL2+, IPTV Services.
·
80-500 – Indoor In-Line xDSL Filter.
·
SCT-A – Active Sealing Current Terminator.
·
95S-1-09 – ADSL2+ POTS Splitter Module.
·
95S-1-10 – Sealed Customer Bridge Module Equipped with DSL Compliant Half-Ringer.
·
95S-1-11 – DSL POTS Splitter Module.
·
95S-1-12 – DSL POTS Splitter Module for VDSL2/ADSL2+, IPTV Services.
·
96 Series – xDSL POTS Splitter Module.
·
97 Series – VDSL/ADSL2+ POTS Splitter Modules.
·
97C-1-1-2 – ADSL2+ POTS Splitter Module.
·
712 Series – MDU xDSL POTS Splitter Panel.
·
761-4T-12 – Flush Mount POTS Splitter for VDSL2/ADSL2+, IPTV Services.
·
UVS-12 – xDSL POTS Splitter.
Gas Tubes
·
31-B – Maximum Duty Gas Discharge Tube Surge Arrester.
Home Networking
·
HNX-ET – HomePlug® Turbo Ethernet Bridge.
·
HNP6L-ET – Combination Ethernet Turbo Adapter and Home Networking Protector.
·
HNP6-X-T – Home Networking Protector.
·
HNP6 – Home Networking Protector.
·
HNP6-X-T-S – Satellite Home Networking Protector.
·
HNP6-X-T-C – Home Networking Protector.
Network Interface Device - NID
·
764S – Indoor Gel Sealed Network Demarcation Device.
·
356-1I-00 – DSL Compliant Station Protector with Demarcation Jack.
·
751 – Indoor Gel Sealed Network Master Jack.
·
320 NIZ, 325 NIZ, 326 NIZ & 126 NIZ – One-Line Outdoor/Indoor Network Interface Devices.
·
758Z Series – Network Interface Adapters.
·
759 & 760 – One and Two Pair Network Interface Devices.
·
763 – Six-Line Indoor/Outdoor Network Interface Devices.
·
3100 COCOT – (Customer Owned Coin Operated Telephone) Network Interface Device Series.
·
3600 – Six-Line Broadband Outdoor Network Interface Devices.
·
3700 – Three-Line Broadband Outdoor Network Interface Devices.
·
3800 – COCOT Mounting Base.
·
5100 – Two Line Enhanced Indoor/Outdoor Network Interface Device.
·
9600 – Twelve-Line Broadband Outdoor Network Interface Devices.
·
8925 – 25 Pair Indoor Network Interface Device.
·
85 – Sealed Subscriber Bridge with RJ-45 Test Receptacle.
·
91 Series – Expansion Modules.
·
95 Series – Customer Bridge Modules (CBMs).
·
95S – Sealed Customer Bridge Modules (CBM).
·
95S-2 – Sealed Customer Bridge Modules (CBM).
·
96 Series – Sealed Customer Bridge Module (CBM).
Powerline Protection
·
442 – Grounding Module with AC Outlet.
·
442CGT – Grounding Module for AC and Coax with AC Outlet and Top Position Grounding Prong.
·
442CSE – ONT Grounding Module for Coax Utilizing Two-Prong Polarized AC Outlet.
·
EMC-240B – Surge Suppressors.
·
442C – Grounding Module for AC and Coax with AC Outlet and Coax Cable Grounding.
Station Protectors
·
312 Series – Single Pair Station Protector.
·
315 Series – Outdoor Rated Station Protector.
·
320, 321, 325, & 326 – Totel Failsafe TFS Station Protectors.
·
344, 345, 348 & 349 – Station Protectors.
·
347 Series – Station Protectors.
·
530, 531, 536 & 539 – Multiple Pair Station Protectors.
Surge Arresters
·
372S-4G – Gigabit Ethernet Surge Protection Module.
·
EP-IL45 – Ethernet Surge Protector.
·
AD-01W-FS – DSL Compliant Sealed Station Protector.
·
AD-02W-FS – DSL-Compliant Sealed Station Protector.
·
AD-03W-FS – High Voltage DSL-Compliant Sealed Station Protector Angle Driver.
·
AD-M2-W-FS – DSL Compliant Angle Driver Sealed Station Protector.
·
AD-01W-LP – DSL Compliant Sealed Surge Arrester.
·
117S – Emergency Phone Systems Surge Protection Panel.
·
122 – Primary Surge Arrester Module.
·
126 – Heavy Duty Totel Failsafe� TFS� Station Protector Module.
·
127M – Heavy Duty Station Protector.
·
317 – Three-Electrode Maximum Duty Gas Tube Surge Arrester.
·
355M – Maximum Duty Totel Failsafe� TFS� Station Protector Module.
·
356 – Heavy Duty Totel Failsafe Station Protector Module.
·
365 – Protector Units.
·
366 – Protector Unit.
·
372-S2 – 100 Base-T Surge Protection Module.
VoIP
·
VIS-2 – Voice Intercom Switch with Porting Switch.
·
761-WB1-W / 761-WB2-W – Surface Mount Wall Boxes.
·
SVM-1-0-2 – Two-Way Switchable Voice Module.
·
68M-2-1T – Two Line Sealed Wire Terminal with RJ-11 Tail/Connector.
·
68M-12-1T – Twelve-Line Sealed Wire Terminal with RJ-21 Tail/Connector.
·
68M-1-1T – Single Line Sealed WIre Terminal with RJ-11 Tail/Connector.
·
751B – Surface Mount Gel-Sealed Telephone Jack.
·
WTB-025-C04 – 25 Line Sealed Wire Terminal with 4FT CAT3 Cable Stub.
·
68M-12-C04 – Twelve Line Sealed Wire Terminal with 4ft. Cat3 Cable Stub.
·
168 Series – Outdoor Sealed Wire Terminal Enclosure.
·
67M Series – Sealed Wire Terminal.
·
68M Series – Sealed Wire Terminal.
·
68M-2S – Sealed Wire Terminal with Home Security Connections.
·
68M-2S-4 – Two Line Sealed Wire Terminal with Home Security Connections.
·
69M Series – Sealed Wire Terminal.
·
69M-2S – Sealed Wire Terminal with Home Security Connections.
·
69T Series – Sealed Wire Terminal.
·
78 – Dual Service Provider Switch.
·
79 – Dual Service Provider Switch.
·
SVM – Switchable Voice Module.
·
SVMWT – Switchable Voice Module.
·
SVM-1R-P – Indoor Switchable Voice Module.
·
SVM-2-P, SVM-4-P – Multi-line Switchable Voice Module.
·
SVN – Switchable Voice NID.
·
SVN-12 – Switchable Voice NID Adapter Panel.
·
VIS-3 – Voice Intercom Switch.
·
VIS-4 – Voice Intercom Switch With Dial Down Feature.
·
89 – Two-Line Module with Two-Way Switching Capability.
·
162T Series – Outdoor Sealed Wire Terminal Enclosure.
·
164-2 – Outdoor Sealed Wire Terminal Enclosure.
·
170 Series – Outdoor Sealed Wire Terminal Enclosure.
·
67 – Sealed Wire Terminal.
·
68 Series – Sealed Wire Terminal.
·
69T-2S – Sealed Wire Terminal with Home Security Connections.
·
SVWJ – Switchable Voice Wall Jack.
·
761M Series – Flush Mount Indoor Phone Jack Plate.
Wire Terminals
·
68M-2-2T – Dual-Line Sealed Wire Terminal with Two Stubs.
·
69M-2S – Sealed Wire Terminal with Home Security Connections.
·
67M Series – Sealed Wire Terminal.
·
68M Series – Sealed Wire Terminal.
·
68M-2S – Sealed Wire Terminal with Home Security Connections.
·
68M-2S-4 – Two Line Sealed Wire Terminal with Home Security Connections.
·
69M Series – Sealed Wire Terminal.
·
170 Series – Outdoor Sealed Wire Terminal Enclosure.
·
168 Series – Outdoor Sealed Wire Terminal Enclosure.
·
162T Series – Outdoor Sealed Wire Terminal Enclosure.
·
MST – Modular Splice Terminal.
·
751B – Surface Mount Gel-Sealed Telephone Jack.
·
WTB-025-C04 – 25 Line Sealed Wire Terminal w/ 4FT CAT3 Cable Stub.
·
68M-12-C04 – Twelve Line Sealed Wire Terminal w/ 4ft. Cat3 Cable Stub.
·
62 Series – Category 5e Termination Block.
·
65-10 – 10 Pair IDC Connector Block.
·
DVC-4 – Four Line Digital Voice Connector.
·
AIC-400-33 | AIC-600-29 – Aerial In-Line Splice Closure.
·
605 – Twenty-Five Pair Aerial Terminal.
·
605-50 – Fifty Pair Aerial Terminal.
·
761T Series – Flush Mount Indoor Phone Jack Plate.
·
163 Series – Wire Terminal Enclosures.
·
166 Series – Wire Terminal Enclosures.
·
ADX-FL-W – Sealed Cross-Connect Fuse Link Module.
·
ADX-W – Sealed Unprotected Cross-Connect Module.
·
61 Series – CAT5E Termination Block.
·
67-2-18 – Sealed Wire Terminal.
·
68M-1-1T – Single Line Sealed WIre Terminal with RJ-11 Tail/Connector.
·
68M-2-1T – Two Line Sealed Wire Terminal with RJ-11 Tail/Connector.
·
68M-12-1T – Twelve-Line Sealed Wire Terminal with RJ-21 Tail/Connector.
·
90 Series – Bridging Modules.
Building Entrance Terminals
·
IF Series – 25, 50 & 100 Pair Indoor Fixed BET, BET/NID.
·
IM Series – 25, 50 & 100 Pair Indoor Modular BET, BET/NID.
·
IHD Series – 25, 50 & 100 Pair Indoor, High-Density BET.
·
OF Series – 25, 50 & 100 Pair Outdoor Fixed BET, BET/NID.
·
OM Series – 25, 50 & 100 Pair Outdoor Modular BET, BET/NID.
·
MP Series – 25 Pair BET, BET/NID Modular Panel Assemblies.
·
IF/OF BET – Accessory Options.
·
24 Series BET – 25, 50 & 100 Pair Trifold Building Entrance Terminals with 110, 710 & MS2 Input, 110 Output.
·
24 Series BET – 25, 50 & 100 Pair Building Entrance Terminals with 66 or 110 Input, 66 or RJ Output.
·
25 Series BET – 25, 50 & 100 Pair Building Entrance Terminals with 66 & 110 Input/Output.
·
25 Series BET – 25, 50 & 100 Pair Building Entrance Terminals with Stub Input and 66 or 110 Output.
Terminal Blocks
·
88A – TERMINAL BLOCKS.
·
88 Block – TERMINAL BLOCK – Wire Wrap Termination.
·
88X-(XXX)C – TERMINAL BLOCKS – RJ21/Wire Wrap Termination.
Coax Protectors
·
706 Series / 202 Series – DS-3 Protector Panel and Coax Rack Mount Module.
·
98 – Coax Service Module (CSM).
·
210 & 212 – In-Line� Coaxial Lightning Surge Protectors.
·
210 BNC Series – In-Line� Coaxial Surge Protector.
·
211 – In-Line� Coaxial Lightning Surge Protector.
·
220 – Coaxial Shield Isolator.
·
231 Series – Coaxial Satellite Dish Surge Protectors.
Electronics
Fiber - Cable Assemblies
·
Z1K9R8 Series – Peelable MicroDrop Cable.
·
Pigtails – Simplex, 6, 12 Fiber 900um, 12 Fiber 250um and Ribbon.
·
Simplex Bend Insensitive Fiber – Indoor/Outdoor MDU Drop Cable.
·
Ribbon Premise Fiber – Ribbon Premise Fiber Optic Cable.
·
Node Drops – CATV and FTTx Fiber Node Drop Cables.
·
2-24 900um – Indoor Fiber Distribution Cables.
·
36-144 900um – Indoor Fiber Distribution Cables.
·
Duplex Jumpers – Double Strand Fiber Optic Cables.
·
Simplex Jumpers – Single Strand Fiber Optic Cables.
·
SHF Series – FET Preterminated Stubbed Housings.
·
SHL Series – TSL Preterminated Stubbed Housings.
·
QT Series – Field Installable Fiber Quick Term Connectors.
Fiber - Indoor/Outdoor Enclosures/Cabinets
·
FDH7 Series – Modular FDH Pole/Pad Mount Enclosure.
·
FDH6 Series – Modular FDH Pole/Pad Mount Enclosure.
·
OC-ONT – GR-487 Compliant, NEMA 4X Rated Outdoor Metal ONT Cabinet.
Fiber - Miscellaneous
·
TRM Series – Terminators.
·
SPLICE – Single or Mass Fusion Protection Sleeves.
·
FIT – Fiber Installation Tool.
·
ATN – Attenuators.
·
TFC6 – Single Fiber Cleaver.
·
TPM1 – Optical Power Meter.
·
TLS – Optical Light Source.
·
TFVL Series – Visual Fault Locator.
·
QT Series – Field Installable Fiber Quick Term Connectors.
·
FST Series – Fiber Splice Tray.
·
CPR – Fiber Optic 1×2 Coupler/Splitter.
·
LBX Series – OTDR Launch Boxes.
·
OPTIPOP – Ferrule Cleaning Cassette.
·
IBC Ferrule Cleaners – US Conec IBC� dry cloth ferrule cleaners.
Fiber - ONT Installation Accessories
·
FPS Series – Fiber Pathway System.
·
Z1K9R8 Series – Peelable MicroDrop Cable.
·
OC-ONT – GR-487 Compliant, NEMA 4X Rated Outdoor Metal ONT Cabinet.
·
FMC Series – Structured Wire Flush Mount Closures.
·
ONT-PWRDIN-U – Universal Mounting Power Module.
·
OD-ONT-ENC – Outdoor Optical Network Terminal Enclosure with Slack Storage.
·
ONT-ENC-LA – Optical Network Terminal Enclosure with Slack Storage.
·
ONT-SU – Optical Network Terminal Storage Unit.
·
ONT-SE1 – Optical Network Terminal Slack Storage Enclosure.
·
FAT1 Series – Fiber Access Termination Unit.
·
VIS-4 – Voice Intercom Switch With Dial Down Feature.
·
VIS-3 – Voice Intercom Switch.
·
ONT-SS – Optical Network Terminal Storage Shelf.
·
442CSE – ONT Grounding Module for Coax Utilizing Two-Prong Polarized AC Outlet.
·
CPR – Fiber Optic 1×2 Coupler/Splitter.
·
VIS-2 – Voice Intercom Switch with Porting Switch.
Fiber - OSP Fiber Enclosures
·
FET4 Series – Outdoor Fiber Demarcation Enclosure.
·
FDH7 Series – Modular FDH Pole/Pad Mount Enclosure.
·
508F – Fiber Interface Device / Slack Storage Unit.
·
FDH6 Series – Modular FDH Pole/Pad Mount Enclosure.
·
HCCS Series – Modular Fiber Splice Enclosure.
·
HCCH-SC – Modular Fiber Distribution Hub (FDH) Enclosure.
·
HCCP-LC Series – Modular Fiber Patch & Splice Enclosure.
·
HCCP-SC Series – Modular Fiber Patch & Splice Enclosure.
·
HCCB Series – Hybrid Fiber Optic/Copper Enclosure.
·
MFST – 16 Port Fiber Aerial Terminal.
·
171F – Fiber Transition Enclosure.
·
FP02 Series – 6 Port Fiber Adapter Plate.
·
FP01 Series – Single Port Fiber Adapter Plate.
·
509F – Fiber Interface Device / Slack Storage Unit.
·
FET3 Series – Outdoor Fiber Demarcation Enclosure.
·
WSE-144 – Wallmount Splice Enclosure.
·
WSE-288 – Wall Mount Splice Enclosure, 288 Single 864 Mass Fusion.
·
FDT Series – 24F-72F Outdoor Fiber Distribution Terminals.
·
FDH1 Series – Fiber Distribution Hub.
·
FDH2 Series – Fiber Distribution Hub.
·
FET1 Series – Fiber Entrance Terminal.
·
FET2 Series – Fiber Entrance Terminal.
·
SHF Series – FET Preterminated Stubbed Housings.
·
Slim Patch Drop – Fiber Optic Distribution Assembly.
·
169F Series – Fiber Interface Device.
·
506F – Fiber Interface Device/Slack Storage Unit.
·
507F – Fiber Interface Device/Slack Storage Unit.
Fiber - Rack Mount Enclosures
·
MFM Series – MTP Modules/Cassettes.
·
PSC Series – Patch and Splice Cassette.
·
LG1 Series – Adapter Plates.
·
MP1U3B, MP1U3BSS – 1RU Rackmount Master Plate 3 LGX Module Capacity.
·
RM1UBSS, RM2UBSS – Rackmount Slack Storage Units.
·
RM1U2S – Swingout Patch and Splice Panel.
·
RM2U6B – Rackmount Fiber Distribution Panel.
·
RDC Series – Rackmount Data Center Distribution Panels.
·
RM4UXB – Rackmount Fiber Distribution Panel.
·
RM1U2B – Rackmount Fiber Distribution Panel.
·
RM1U3B – Rackmount Fiber Distribution Panel.
·
RM2U4B – Rackmount Fiber Distribution Panel.
·
RM3U8B – Rackmount Fiber Distribution Panel.
Fiber - Splitters
·
FSC Series – Fiber Optic Splitter Chassis.
·
FSM Series – Fiber Optic Coupler/Splitter Modules.
·
FSMx Series – Fiber Splitter Module.
·
LPS Series – Low Profile 1xN PLC Splitter Module.
·
PLCR Series – 1xN PLC Splitter.
·
PLC9 Series – 1xN PLC Splitter Module.
Fiber - TSL Series Rack Mount Enclosures
·
TSL Series – Patch & Splice Enclosures.
·
MAMU Series – Multi-Access Modular Unit.
·
SHL Series – TSL Preterminated Stubbed Housings.
Fiber - Wall Mount Enclosures
·
MFM Series – MTP Modules/Cassettes.
·
PSC Series – Patch and Splice Cassette.
·
LG1 Series – Adapter Plates.
·
WM01BT – Wall Mount Patch & Splice Fiber Enclosure.
·
HCCB Series – Hybrid Fiber Optic/Copper Enclosure.
·
HCCH-SC – Modular Fiber Distribution Hub (FDH) Enclosure.
·
HCCP-LC Series – Modular Fiber Patch & Splice Enclosure.
·
HCCP-SC Series – Modular Fiber Patch & Splice Enclosure.
·
HCCS Series – Modular Fiber Splice Enclosure.
·
CCP7 Series – Fiber Optic ONT Customer Connection Point.
·
CCP6 Series – Fiber Optic Customer Connection Point.
·
WM02BT – Wall Mount Patch & Splice Fiber Enclosure – 2 Plate Capacity.
·
WM04BT – Wall Mount Patch & Splice Fiber Enclosure – 4 Plate Capacity.
·
WM08BT – Wall Mount Patch & Splice Fiber Enclosure – 8 Plate Capacity.
·
WM12BT – Wall Mount Patch & Splice Fiber Enclosure – 12 Plate Capacity.
·
FMC Series – Structured Wire Flush Mount Closures.
·
CCP5 Series – Fiber Optic Customer Connection Point.
·
WSE-144 – Wallmount Splice Enclosure.
·
FAT1 Series – Fiber Access Termination Unit.
·
FDT Series – 24F-72F Outdoor Fiber Distribution Terminals.
·
WSE-288 – Wall Mount Splice Enclosure, 288 Single 864 Mass Fusion.
·
CCP3 Series – Fiber Optic Customer Connection Point.
·
CCP2 Series – Fiber Optic Customer Connection Point.
·
CCP1 Series – Fiber Optic Customer Connection Point.
·
FDH1 Series – Fiber Distribution Hub.
·
FDH2 Series – Fiber Distribution Hub.
·
WM1PBF – Wall Mount Patch & Splice Fiber Enclosure.
·
WM2PBF – Wall Mount Patch & Splice Fiber Enclosure.
·
WM4PBF – Wall Mount Patch & Splice Fiber Enclosure.
·
WM8PBF – Wall Mount Patch & Splice Fiber Enclosure.
Fiber Distribution Hub
·
FDH6 Series – Modular FDH Pole/Pad Mount Enclosure.
·
Slim Patch Drop – Fiber Optic Distribution Assembly.
·
FDT Series – 24F-72F Outdoor Fiber Distribution Terminals.
·
FDH2 Series – Fiber Distribution Hub.
·
FDH1 Series – Fiber Distribution Hub.
CAT-5E and CAT-6 Network Protection
·
505E Series – CAT5E Protector Packs with 110 Termination.
·
606 – CAT6 PROTECTOR PACK – 110 Termination.
·
61 Series – CAT5E Termination Block.
·
LVP Series – Solid State Protector Modules.
Protector Packs
·
504, 581 – Single-Pin Protector Packs, 66/110 Termination.
·
IF006PFNOPM – Six-Pair Protector Block.
·
506, 1506 – 6 Pair, 5-Pin Building Entrance Protector Packs.
·
512, 1512 – 12 Pair, 5-Pin Building Entrance Protector Packs.
·
525, 525RJ, 1525 – 25 Pair, 5-Pin Building Entrance Protector Packs.
·
581P4 – PROTECTOR BLOCKS.
Protector Panels
·
P20 Series – 20 Pair Rack Mount Protector Panel.
·
190(XX)-BA30-WE06 – 19 Inch RJ-45 Rack Mount Protector Panel.
·
19 Inch Rack Mount Series – 25-200 Pair Protector Panel.
Protector Modules
·
93- 193- Series – 1-Pin and 5-Pin Gas Tube Overcurrent Protector Modules with PTCs.
·
75- 175- Series – 1-Pin and 5-Pin Gas Tube Protector Modules.
·
LVP Series – Solid State Protector Modules.
·
155BCN – Five-Pin / Single-Pin Cut-Through & Special Function Modules.
·
95- 195- Series – 1-Pin and 5-Pin Gas Tube Overcurrent Protector Modules with PTCs.
·
103-105-3C1ES-N, 103-105-3C1FS-N – Solid State 240V and 300V Protector Modules.
·
115 Series – 5-Pin Solid State Protector Modules.
·
113 Series – 5-Pin Solid State Protector Modules.
·
73- 173- Series – 1-Pin and 5-Pin Gas Tube Protector Modules.
·
Delta Protector – Customer Premise – Line Protection for PBXs
and Connection Equipment.