Installation

Installation Overview

This page provides guidance on installing the Tellabs FlexSym ONT202 and any required accessories. The procedure involves the following steps:

1. Physically mount the ONT and accessories
2. Connect the ONT to DC power
3. Connect the optical fiber cable to the ONT
4. Secure and dress fibers and cabling
5. Verify the Installation

Note 1: The Tellabs ONTs are designed to operate in specific orientations and have the expectation of free airflow around the unit to ensure the ONT stays within the ONT’s design limits. ONTs should never be stacked or strapped together as this typically does not give sufficient air flow to maintain the unit within temperature specifications. Multi-ONT configurations should use the proper mounting brackets and/or DIN rail shelf to ensure proper installation. Failure to follow these practices may void your warranty and cause premature failure of the unit.

Note 2: If the upstream equipment (OLT) is not yet operational, it is impossible to complete the final step of the procedure at the time of installation. Nevertheless, the ONT is not considered to be fully installed until this step is completed.

Note 3: When the ONT is first connected to the PON, it must download and install software. This process can take up to 20 minutes to complete. If multiple ONTs need to be installed at the site, the next physical install can proceed.

Physical Mount

The ONT202 can be installed in most any location including desktop or other indoor surface, electrical gang box, DIN rail flush mount, outdoor NEMA enclosures, ceiling plenums or rack mounted in communication closets. Following are the physical mounting procedures for typical installations.

Desktop

The ONT202 can simply be placed on top of a desk, table, shelf, or other flat surface. This allows the user to adjust its position, have easy access to the connectors on the back, and see the LED indicators on the top as the ONT operates. The ONT202 has four stabilizing rubber feet on the bottom of the unit to prevent it from slipping on a hard surface. The ONT202 is also designed with an integrated cable management system to store slack fiber inside the unit, reducing work area clutter.

Wall Mounting Bracket

The FlexSym ONT202 can be attached to a wall or other indoor surface using an optional Wall Mounting Bracket. Before mounting the ONT, consider the location and orientation appropriate for access and ease of use. Consider the power cable, optical fiber and ethernet cables that will need to be attached to the ONT. Also, consider the visibility of the LED Indicators on the top of the unit.

Install the Wall Mounting Bracket

The optional Wall Mounting Bracket for the ONT202 is shown below:

1. Prior to mounting the bracket, insert 2 screws (included with bracket) into the center studs of the wall mounting bracket, leaving a 0.12 inch gap between the bottom of the screw head and the top of the stud, as shown below. Setting this gap is required to ensure proper engagement with the keyhole mountings on the bottom of the ONT202.

2. Place the Wall Mounting Bracket on the mounting surface and position to hold the ONT in the desired orientation.
3. Mark the mounting surface for the two surface mount holes in the bottom of the bracket.
4. Carefully drill holes in the marked locations appropriate for the fasteners to be used.
5. Install drywall or masonry anchors if they are needed.
6. Hold the bracket in position and secure with screws.

Attach the ONT202 to the Wall Mounting Bracket

1. Position the ONT so the 2 mounting screws in the center studs of the bracket align with the keyholes on the base of the ONT.
2. Press the ONT onto the bracket to engage the keyholes and compress the bracket spring clips.
3. Slide the ONT away from the bracket spring clips until they pop up and lock the ONT into place.

Double Gang Electrical Box

The ONT202 is designed with mounting holes along the body of the device. These holes align with the screw studs of a standard double-gang electrical box. The mounting holes are accessed by raising the panel on the top of the ONT. This panel also covers the ONT's integrated fiber management system.

To mount the ONT202 using a double gang electrical box, use the following procedure:

1. Install the double-gang electrical box according to industry standards. Ensure the box is installed securely enough to support the ONT and attached cables.
2. Remove the necessary knockouts from the gang box and feed in the optical fiber and remote power cable (if applicable).
3. Open the panel on top of the ONT to access the integrated fiber management system and the ONT mounting holes.
4. Feed the optical fiber cable and remote power cable (if applicable) from the gang box through the fiber cable cutouts in the bottom of the ONT, making sure not to crimp the cables.
5. Use the ONT's integrated fiber management system to manage the optical fiber cable slack.
6. Slide the 4 mounting screws (supplied with the electrical box) through the ONT mounting holes and into the mounting studs of the electrical box. Use a screwdriver to start the screws into the threads. See the illustration below.
7. Ensure the cables are clear of any pinch points and tighten the screws with a screwdriver to secure the ONT.

DIN Rail Mount

A DIN rail is a standards-based metal rail typically used for mounting industrial control equipment. It is meant only for mechanical support, though it may provide a chassis grounding connection. There are various shapes and sizes for DIN rail standards. The ONT202 DIN rail flush mounting solution is only compatible with the top hat style, 35mm DIN rail. This rail has the following dimensions:

The ONT202 is flush mounted on the DIN Rail using the included DIN mounting bracket, shown below:

To flush mount the ONT202 onto a DIN rail, use the following procedure:

1. Attach the DIN rail to the desired mounting surface using the appropriate screws and anchors.
2. Attach the DIN mounting bracket to the ONT.
   1. Align the holes in the DIN rail mounting bracket with the mounting holes on the bottom of the ONT202.
      1. Attach the bracket using the screws provided.
         
         
          

   Note: The ONT can be attached to the DIN rail in any orientation that fits the application needs.

3. Mount the ONT to the DIN rail
   1. Slightly tilt the ONT (with attached DIN rail mounting bracket) and press the tension spring of the DIN rail mounting bracket over the top lip of the DIN rail.
   2. Lightly press down and in on the ONT until the bracket locks into position.

The illustration below shows the most common DIN rail mounting orientation:

ONT202 Rack Mounting

The ONT202 can be rack mounted using an OEM DIN Rail Mount and a Universal ONT DIN Rail Mounting Bracket.

OEM DIN Rail Mount

A Recommended OEM DIN Rail Mount is from the Panduit Catalog. The rackmount is a standard, 19-inch, with a DIN rail that can hold up to 11 vertically stacked ONTs. The ONTs mount to the DIN rail using the Tellabs Universal ONT DIN Rail Mounting Bracket.

Universal ONT DIN Rail Mounting Bracket

The Universal ONT DIN Rail Mounting Bracket provides strain relief features for the optical fiber and Ethernet cables. Three fiber channels located near the fiber connection ports, provide strain relief and bend radius protection for the optical fiber cable, while additional strain relief is provided by zip tie holes down the length of the bracket. The ONT202 mounting bracket procedure is located in: Install Guides> Mechanical Assemblies> Universal ONT DIN Rail Mounting Bracket.

Plenum Bracket

The ONT202 is plenum rated without the bracket but can be mounted in spaces handling environmental air using a plenum bracket. A plenum bracket is used to protect the ONT202 and provide compliance with heat and smoke standards, according to local building practices. The plenum bracket for the ONT202 is an optional accessory that must be purchased separately. Use the following procedures to mount the ONT202 using a plenum bracket:

Mount the ONT202 inside the Plenum Bracket

1. Place the labeled plenum bracket on its side (face up) so the two screws are visible on the fixture bracket inside the plenum bracket.
2. Align the 2 keyholes on the bottom of the ONT202 over the 2 center mounting studs on the fixture bracket, as illustrated, and then slide the ONT down and forward.

Install the Plenum Bracket on a Wall

1. Locate a suitable position, within reach of a wall outlet, to install the plenum bracket.
2. Drill two level holes, to accommodate the 2 - 1/4-inch screws, into the wall, as shown in the example.

Note: If installing the plenum bracket in sheetrock, a wall anchor should be used.

3. Insert the 2 - 1/4-inch screws into the drilled holes and tighten the screws through the holes in the bracket and into the wall, as illustrated below:

Note: If using wall anchors, drill pilot holes into the sheetrock, matching the diameter of the anchor. Insert the anchor into the sheetrock and secure the plenum bracket with the bolt/screw supplied with the anchor.

Install Plenum Bracket on a Railing

1. If installing the plenum bracket on a cable raceway railing or similar structure, use the plenum bracket lip and the set screw to install the plenum bracket.

   Note: The ONT202 can be mounted on a railing up to 1/2" wide.

2. Ensure the railing is clear of any surrounding equipment.
3. If the railing is mounted to a ceiling, ensure the plenum bracket is close enough to the power source.
4. Tighten the set screw over the metal rail, as shown below:
   

Outdoor NEMA Enclosure

The ONT202 supports industrial temperatures and humidity and can be mounted in an outdoor rated NEMA enclosure. The procedure for this type of installation will vary depending upon the type of enclosure and application.

Connecting to Power

DC power for the Tellabs FlexSym ONT202 can be provided locally by one of two optional AC adapters (150-W and 85-W power bricks) or by a remote bulk DC power supply.

Local AC Adapter

Use one of the optional AC adapters plugged into an AC outlet near the ONT installation location to provide ~54 VDC to the ONT (150-W AC adapter is recommended).

1. Unravel the line cord and DC output cable of the AC adapter.
2. Plug the DC output cable from the AC adapter into the UPS connector on the ONT202.
3. Plug one end of the line cord into the AC adapter and the other end into a nearby AC outlet.

Remote Bulk DC Power Supply

Remote DC power may be delivered to the ONT using a DC power cable or the power conductors in an optical/copper composite cable. Have a (locally sourced) Phoenix-type pluggable terminal connector (5.08 mm pitch 2P) handy. This procedure is for a connector with screws.

Do not plug the connector block into the ONT yet.

1. On the bulk DC power supply, turn off or disconnect the DC power to the ONT being installed. Note which wire (color/stripe/etc.) is positive.
2. At the ONT, we use a DMM to ensure no voltage is on the wires of the remote bulk DC cable.
3. Strip about 3/16 inch of insulation from the ends of the DC wires and twist the strands of each wire tightly.
4. Install the Phoenix-type pluggable terminal connector on the end of the remote bulk DC cable. Ensure that the screws are tightened properly. The polarity marked on the ONT rear panel above the DC 54V power connector must be observed. If the connector has reversed polarity, the ONT will not be damaged when powered up, but it will not power up.
5. At the bulk DC power supply, restore power to the DC cable for the ONT being installed.
6. At the ONT, we use a DMM to make sure that DC power (~ 54 VDC) is available at the Phoenix power connector and the polarity is correct. If polarity is reversed, shut off power to the DC cable, reverse the cable connections at the connector, and restore power.
7. When the voltage and polarity are correct, wrap several turns of electrical tape around the screw terminal block covering the screws. This will reduce the chance of an object shorting across the screw terminals.
8. Plug the Phoenix DC power connector into the ONT DC 54V connector.

The ONT Power LED Indicator will come on in about five seconds and be steady green. (See the LED Behavior Table on the Description page of this document.)

Connecting Optical Fiber

The optical fiber connector is located on the left side of the ONT when viewed from the rear. A removable cover protects the connector and prevents laser light from exiting the ONT into the room.

Danger! Invisible Laser Radiation: Optical Fibers emit invisible laser radiation. Avoid direct exposure to the beam. Never look into the end of a Fiber or into a Fiber connector on a cable or a device. Permanent eye damage or blindness can occur quickly from laser radiation.

1. Locate the fiber port at the rear of the ONT.
2. Remove the protective dust cover from the ONT optical bulkhead.
3. Clean and scope the ONT bulkhead and fiber cable connector per local practices.
4. Use a light meter to ensure that the light level coming from the OLT is within tolerance (-9 dBm < >-28 dBm at 1580 nm).
5. Orient the fiber cable connector so that the molded raised key is aligned with the keyway in the ONT bulkhead.
6. Slide the fiber cable connector into the ONT bulkhead until a click is felt and heard.

Warning: When removing the optical fiber cable from the ONT bulkhead, grasp the connector body, not the strain relief or cable.

Cable Management

At a minimum, the optical fiber cable and DC power cable will be connected to an ONT. There will be more cables depending on the devices subtending from the ONT. It is important that all cables are dressed neatly and routed such that they are out of the way and cannot be easily damaged. It is a good idea to bundle cables using ties. Reusable cable ties (Velcro) allow additional cables to be added to the bundle, or unused cables to be removed from the bundle easily.

The ONT202 is uniquely designed with an integrated fiber management system to manage and protect slack optical fiber cable. This system provides bend radius protection, strain relief, and protects against accidental fiber damage.

Excess optical fiber (not wound up inside the ONT fiber management system) can be loosely coiled and placed in a secure location. The optical fiber cable can perform poorly or be damaged if it is bent sharply or crushed. A coil of at least 6 inches in diameter is recommended to protect against fiber damage. Use electrical tape or Velcro cable ties to hold the coiled fiber together in several places. Nylon zip ties can be used if care is taken to not crush the cable and to remove sharp points after cutting off excess cable tie length.

Warning: Do not bend the fiber optic cable to a diameter smaller than 7.5cm/3 inches. Doing so may damage the fiber or prevent the signal from passing through properly.

Verifying the Installation

Once the installation, software download, and bootup is complete, use the following procedure to verify ONT status:

Note: During boot up, the XGS-PON LED will flash red and may progress to solid red for approximately 10 seconds before flashing green while downloading software. Do not cycle power or change the ONT if flashing green. Check with a systems administrator for software download status before proceeding.

1. Verify that the Power LED is Solid Green, indicating that the local power level is good.
2. Verify that the XGS-PON LED is Solid Green, indicating that the ONT is up and active on the network.
   1. If the XGS-PON LED is Solid Green, no further installation work is necessary.
   2. If the XGS-PON LED is not Solid Green, contact the systems administrator for activation assistance. Have the following information available:
      • Vendor: Tellabs
      • ONT Model Number: 202
      • ONT Serial Number: Located on a sticker on the bottom of the ONT

Services are provisioned and turned up remotely via the Panorama PON EMS. Services may have been provisioned in advance. If they were not, it may be necessary to contact the systems administrator to complete service activation.