Teleline – Standalone Units
POTS Standalone Isolator Unit
The POTS Standalone Isolator Unit, Model 751222, provides 50 kV RMS (70 kV peak) of high voltage isolation between a telephone line and the drop side of one loop start telephone, dial-up modem, or loop start PBX trunk.
The unit consists of an isolator card and a power supply mounted inside a small compact enclosure. The enclosure is molded from fiberglass, making it a lightweight, flame retardant product of high dielectric strength. Its fiberglass body limits the possibility of many kinds of infiltration while providing reliable isolation from external ground potentials.
Isolator Card and a Power Supply
Applications
- Loop start PBX trunk telephone (POTS)
- Fax and dial-up “smart” modems (up to 56.6 kb/s modem)
- Loop start PBX
- Dial-up remote meter reading
Features
- The Power Supply of the Model 751222 accepts a variety of voltage inputs with battery back-up on the Station side and provides -48 Vdc to the terminating telephone
- CO side circuit components are powered from the CO battery feed
- The unit’s sinusoidal ringing generator will regenerate the ring signal on the output and can ring up to five standard 500 type sets
- The unit withstand 600 V power cross (as per UL60950) with automatic restoration of service
- Enclosure resists the infiltration of dust, mist, and water from sprinklers
- The unit’s operating temperature range may be extended to -4°F to 149°F (-20°C to 65°C) by removing the battery completely. If the battery is removed, in the event of a loss of service 120 Vac, there will be no back-up power provided. In this situation, the POTS Standalone Isolator Unit should be powered by a floating 48 Vdc or 130 Vdc supply)
| PRODUCT | CLEI CODE | DESCRIPTION | DOWNLOAD |
|---|---|---|---|
| 751222 | NPMIHLAARA | POTS Standalone Isolator Unit | User guide Specification |
4-wire T1 Standalone Isolator Unit
The 4-Wire T1 Standalone Isolator Unit consists of an isolation card mounted inside a compact enclosure, with or without an integrated power supply. Molded from fiberglass, the enclosure is lightweight and flame-retardant with high-dielectric strength. The fiberglass body limits the possibility of many kinds of infiltration while providing reliable isolation from external ground potentials.
The standalone unit is shipped with an installation kit that includes a high-dielectric strength, 6-pair CMAW cable for connection to the incoming Central Office (CO) cable.
4-wire T1 Standalone Isolator Unit
The 4-wire T1 Standalone Isolator Unit (Models 751228R2 and 751228SP) provides high voltage isolation between an incoming 4-wire T1 carrier line and a Network Interface Unit (NIU) located in the substation.
Note:
751228 has been manufacture discontinued
751228R2 incorporates Surface Mount Technology (SMT) for increased reliability and greater Mean Time Between Failures (MTBF)
751228SP incorporates Surface Mount Technology (SMT) for increased reliability and greater Mean Time Between Failures (MTBF) and offers a span powering option that provides 60 mA @ 48 Vdc to the NIU or NTCE. The Power Supply of the Model 751228SP accepts a variety of voltage inputs with battery back-up on the Station side
Applications
- T1 Carrier (1.544 Mb/s)
- E1 Carrier (2.048 Mb/s)
Features
- Units are suitable for transmission at frequencies up to 5 MHz provided the data line is conditioned appropriately
- Isolation of 50 kVrms (70 kV peak) while maintaining full communication between terminals
- Communication maintained across the gap by isolation transformers that provide low-loss low-distortion transmission
- When not using the span power option, units do not require power
- The unit provides for simplex DC loopback on the CO side. The DC is not transferred to the Station side
- The unit’s enclosure resists the infiltration of dust, mist, and water from sprinklers
| PRODUCT | CLEI CODE | DESCRIPTION | DOWNLOAD |
|---|---|---|---|
| 751228R2 | NPMIHLAARA | Standalone 4-wire T1 Unit | User guide Specification |
| 751228SP | NPMIHLAARA | Standalone 4-wire T1 Unit | User guide Specification |
Universal HDSL Standalone Isolator Units
The Universal HDSL Standalone Isolator units provide 50kV RMS, 70kV Peak high-voltage isolation between one 4-wire Remote HDSL Terminal Unit (HxTU-R) located inside the substation, and an HDSL Central Office (CO) Terminal Unit (HxTU-C) located at the CO.
These units consist of an isolator card mounted inside a compact fiberglass enclosure. The enclosure is lightweight and flame-retardant with high dielectric strength. Its fiberglass body limits the possibility of many kinds of infiltration while providing reliable isolation from external ground potentials.
Each standalone unit is shipped with a 10’ PVC insulated 6-pair CMAW cable for connection to the CO’s incoming cable. Both the 751239R2 and 751239SP units can be configured for 1 x 4-wire operation, 1 x 2-wire operation or 2 x 2-wire operation. As such both units can accomodate HDSL, HDSL2 and HDSL4. The 751239R2 can be used for G-SHDSL applications. The 751239SP version comes complete with a multi-input to -48Vdc power supply with battery-back-up enabling the unit to reproduce network Span Power to drive the HDSL HxTU-R located at the substation. The 751239SP can be used with or without the Span Power option.
Applications:
- HDSL Classic (2B1Q), 1 or 2 x HDSL2, and HDSL4 with CO-side loopback of Network Span Power
Universal HDSL Standalone Isolator Unit with Station-side Span-Power
Features
- Units provide 50 kVrms (70 kV peak) isolation while maintaining full communication between terminals during a GPR event.
- Communication is maintained across the gap by isolation transformers that provide low-loss, low-distortion transmission
- The Power Supply of the Model 751239SP accepts inputs of floating 130 Vdc, floating 48 Vdc or 120 Vac with battery back-up on the Station side to provide span-power to the terminating HxTU-R
- Enclosures resist the infiltration of dust, mist, and water from sprinklers
- Jumper settings allow you to configure cards to provide a simplex or a loop return-path for network Span Power on the CO side. The voltage will not be transferred to the Station side.
- Jumper settings allow the unit to be configured for 2-wire or 4-wire HDSL. When set in 2-wire mode, the unit can acomodate two HDSL2 circuits
HDSL Isolation Unit
Features
- Units provide 50 kVrms (70 kV peak) isolation while maintaining full communication between terminals during a GPR event
- Communication is maintained across the gap by isolation transformers that provide low-loss, low-distortion transmission
- Model 751239R2 does not require power from either the CO or an external supply to operate
- Enclosures resist the infiltration of dust, mist, and water from sprinklers
- Jumper settings allow you to configure units to provide a simplex or loop return-path for network Span Power on the CO side. The voltage will not be transferred to the Station side.
- Jumper settings allow the unit to be configured for 2-wire or 4-wire HDSL. When set in 2-wire mode, the unit can accomodate two HDSL2 circuits
| PRODUCT | CLEI CODE | DESCRIPTION | DOWNLOAD |
|---|---|---|---|
| 751239R2 | SLC5CBAAAA | Universal HDSL Standalone Isolator Unit | User guide Specification |
| 751239SP | NPMIKMJARA | Universal HDSL Standalone Isolator Unit with Station-side Span-Power | User guide Specification |
4-wire AC Data Standalone Isolator Unit
The 4-wire Data Standalone Isolator Unit, Model 7501-53, provides high voltage isolation between an exterior dedicated four-wire data line and data transmitting / receiving equipment located inside the substation.
The installation kit consists of an isolator card mounted inside a compact enclosure, a cable, and mounting hardware. The enclosure is molded from fiberglass, making it a lightweight, flame retardant container of high dielectric strength. Its fiberglass body limits the possibility of many kinds of infiltration while providing reliable isolation from external ground potentials.
The standalone unit is shipped with a 10’ PVC insulated 6-pair CMAW cable for connection to the CO’s incoming cable.
4-wire AC Data Standalone Isolator Unit
Applications:
- Dedicated 4-wire line modems
- Analog Supervisory Control and Data Acquisition (SCADA) systems
- Tone relay control systems (Teleprotection)
- Analog carrier systems
- Digital Data Service (Ex: 56K DDS Networking)
- Any other equipment using tone-related signalling
Features
- The unit provides isolation of 50kV RMS (70kV peak) while maintaining full communication up to 64 kbps for a 4-wire dedicated data circuit
- The unit is suitable for transmission at frequencies of up to 200 kHz provided the data line is conditioned for operation at this speed
- The unit does not require power input from either the CO or an external supply to operate
- The unit permits the flow of CO simplex sealing current from one pair to another. Simplex sealing current is not transmitted across the isolation gap to the Station side
- The enclosure resists the infiltration of dust, mist, and water from sprinklers
| PRODUCT | CLEI CODE | DESCRIPTION | DOWNLOAD |
|---|---|---|---|
| 7501-53 | NPMWT202RA | 4-wire Data Standalone Isolator Unit | User guide Specification |
ADTRAN Total Reach Standalone Isolator Unit with Battery Back-up
The ADTRAN Total Reach Standalone Isolator Unit with Battery Back-up provides high voltage isolation between an ISDN line and the network termination (NT) equipment at the customer’s location. It also provides isolation for an Adtran Total Reach ISDN or Total Reach DDS (Ex: 56K DDS) circuit.
The unit consists of an isolator card mounted inside a small compact enclosure. The enclosure is molded from fiberglass, making it a lightweight, flame retardant product of high dielectric strength. Its fiberglass body limits the possibility of many kinds of infiltration while providing reliable isolation from external ground potentials.
ADTRAN Total Reach Standalone Isolator Unit with Battery Back-up
The standalone unit is shipped with a 10’ PVC insulated 6-pair CMAW cable for connection to the CO’s incoming cable.
The Model #751233/2A is powered by an integrated power supply that accepts voltage inputs of floating 130 Vdc, 48 Vdc or 120 Vac with a battery backup.
Applications:
Used to isolate ISDN Basic Rate (144kb) NT equipment or DDS circuits (Up to 72bps)
Features
- The unit meets ANSI T1.601-1992, RC9042A, FCC part 15, subpart B
- When set to feed battery, the unit provides -50 Vdc, -65 Vdc, -100 Vdc or -129 Vdc on the line to the equipment on the Station side of the card, depending on the jumper settings. The Tip is always positive and the Ring is negative
- The CO side circuit components are powered from the CO battery feed
- The unit can operate without battery feed if selected through jumper settings
- The enclosure resists the infiltration of dust, mist, and water from sprinklers
| PRODUCT | CLEI CODE | DESCRIPTION | DOWNLOAD |
|---|---|---|---|
| 751233/2A | NPLABBBARA | ADTRAN Total Reach Standalone Isolator Unit with Battery Back-up | User guide |
