ADTRAN 418771 G Series

Questions and Answers

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Elizabeth PowellAug 10, 2025
What to do if POTS LED is red on ADTRAN Network Hardware?
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  Bryce JordanAug 10, 2025
  If the POTS LED on your ADTRAN Network Hardware is red, first contact the OLT administrator to ensure the port is provisioned and working. Next, disconnect the CPE wiring for 30 seconds; if the LED turns off, there's likely a short in the housing wiring. If the LED remains red, the unit might be faulty.
C
Charles RoseAug 15, 2025
What to do if LEDs on the front of ADTRAN SFU ONT Network Hardware cycle continuously?
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  Shirley PerkinsAug 15, 2025
  If the LEDs on the front of your ADTRAN SFU ONT Network Hardware cycle continuously, try using a different SFU ONT. Also, ensure that the power supply is functioning correctly.
M
Maria CooperAug 20, 2025
Why is the network status LED red on my ADTRAN Network Hardware?
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  Sarah LeeAug 20, 2025
  If the network status LED on your ADTRAN Network Hardware is red, contact the Central Office. There may be a software configuration issue between the OLT and the SFU ONT.
H
Hannah SandersAug 26, 2025
How to fix network status LED off on ADTRAN Network Hardware?
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  Brenda BrooksAug 26, 2025
  If the network status LED on your ADTRAN Network Hardware is off, check all fiber connections to make sure they are clean and tight.
T
Tristan TurnerAug 30, 2025
What to do if the upstream optical signal level is out of range on ADTRAN Network Hardware?
- M
  Misty IrwinAug 30, 2025
  If the upstream optical signal level is out of range on your ADTRAN Network Hardware, first verify the ONT provisioning at the OLT. If the problem persists after verification, consider replacing the ONT.
D
David DavisSep 4, 2025
What to do if network status LED continually flashes yellow on ADTRAN Network Hardware?
- J
  Jesse HarrisSep 4, 2025
  If the network status LED on your ADTRAN Network Hardware is continually flashing yellow, contact the Central Office.

The ADTRAN Total Access 300 Series GigE SFU GPON ONTs with RF Overlay are Single Family Unit (SFU) Optical Network Terminations (ONTs) designed for Gigabit Passive Optical Network (GPON) applications with an RF Overlay. These devices provide a consistent and common approach to advancing public communications networks by supporting traditional telephone service (POTS), high-speed data services, and video services.

Function Description:

The SFU ONTs act as the customer premises component of a GPON network, connecting to an Optical Line Terminal (OLT) at the central office via an Optical Distribution Network (ODN) of fibers and passive splitters/couplers. They facilitate the transmission of downstream and upstream traffic on a single fiber using different wavelengths: 1490 nm for downstream, 1310 nm for upstream, and an additional 1550 nm for overlay RF TV distribution.

The Total Access 361 SFU ONT features 2 POTS interfaces and 1 Gigabit Ethernet interface. The Total Access 362 SFU ONT offers 2 POTS interfaces and 2 Gigabit Ethernet interfaces. Both models are designed to be housed in Corning Systems Model FNI-NG series outdoor NID housings.

Important Technical Specifications:

Operational Temperature Range: -40°C to +65°C
Storage Temperature Range: -40°C to +85°C
Voltage Range: 10.5 to 15 VDC
Maximum Current: 1.5 Amps
Relative Humidity: 95%, noncondensing
Dimensions: 9.7"W x 12"H x 4"D
Weight: 3 lbs 0.8 oz (enclosure and electronics module)
Operating Altitude Range: -197 feet (-60 meters) to 13000 feet (3962 meters), with a derating of 1°C/1000 feet (3.3°C/km) for ambient temperature.
Ethernet Ports:
- Total Access 361: ETH 1 (Data and/or Video)
- Total Access 362: ETH 1, ETH 2 (Data and/or Video)
Compliance: NRTL Listed to UL safety standards, meets or exceeds NEBS and Telcordia GR-63-CORE requirements.
FCC Compliance: Complies with Part 15 of FCC rules, subject to not causing harmful interference and accepting any interference received.
Laser Safety: Contains a Class 1 Laser Module compliant with 21 CFR 1040.10 and 1040.11.
Grounding: Requires connection to a known, reliable earth ground using a 6 AWG copper ground conductor, as part of a Common Bonding Network (CBN).
Power Input: Designed to operate with nominal 12 VDC (minimum 10.5 VDC) and will not be damaged by steady state voltages between 10.5 VDC and 15.0 VDC.

Usage Features:

Installation: The enclosure is designed for vertical surface mounting. The electronics module swings open on hinges for easy access during installation.
Ground Connection: A #6 solid copper ground wire is routed through a rubber grommet to a ground bar, then to the AC power ground system of the customer premises.
Power/Alarm Connections: Utilizes a 7-conductor Euro-style Power/Alarm connector for connections from a UPS. Pin-out information is provided for LOW BAT, BAT MIS, REP BAT, ON BAT, SIG RTN, 12V RTN, and +12VDC.
OptiTap Fiber Drop Cable Routing: The OptiTap fiber drop is routed through the same rubber grommet channel as the ground cable, ensuring the fiber is not pinched when the electronics module is closed.
SC/APC Optical Connection: Fiber is routed through a grommet entrance and connected to the SC/APC optical connection, with care taken to avoid bends less than 30 mm (1.2 inches) radius.
Local Power Source Wiring: The SFU ONT must be powered by a UL Listed Power Supply suitable for LPS Levels, as recommended by the power supply manufacturer.
UPS Installation: The Uninterruptible Power Source (UPS, P/N 1187730G1) cable connects to the SFU ONT's Power/Alarm connector.
POTS Connection: Telephone service can be connected using two-screw terminal bridges or directly to RJ-11 jacks. RJ-11 jacks also serve as diagnostic test points, isolating subscriber service for fault isolation.
RF Connection: The RF cable is routed through a large grommet and attached to the RF connector on the bottom of the electronics module.
Ethernet Connection: Supports up to 1 Gigabit operation (10/100/1000) using CAT-6 cable and RJ-45 plugs.
Front Panel LEDs:
- POWER: Off (No power), Green (Power is On).
- NETWORK STATUS: Off (Administratively Shut Down), Green (Normal), Yellow (Test in progress), Red (Fault Condition).
- POTS 1 and 2: Off (Administratively Shut Down), Green (Off Hook), Green Flashing (Ringing), Yellow (Test mode), Red (Fault).
- ETH 1 and 2: Off (Link is down: no activity or Administratively Shut Down), Green (10/100/1000 Link is up), Yellow Flashing (TX or RX activity).

Maintenance Features:

No Routine Hardware Maintenance: The SFU ONT does not require routine hardware maintenance for normal operation.
Repair Services: ADTRAN does not recommend field repairs. Defective units should be returned to ADTRAN for repair services.
Software Support: Field support for software is provided through upgrade facilities.
ESD Precautions: When handling modules, an antistatic discharge wrist strap should be worn, and modules should be placed in antistatic packing material.