Installation

Installation Overview 

This page provides guidance on installing the Tellabs FlexSym ONT205 and any required accessories. The procedure involves the following steps:

1. Physically mount the ONT and required accessories:
   • Place the ONT on a desktop or other surface, - OR -
   • Mount the ONT to a wall, underside of a desk, or some other surface, using the mounting bracket.
2. Connect the ONT to DC power:
   • Use an AC adapter at the installation location, - OR -
   • Use a remote bulk DC power supply cable.
3. Connect the optical fiber cable to the ONT.
4. Verify a solid green PON LED Indicator on the ONT after it boots up.

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 a 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 may be impossible to complete the final step of the procedure when the ONT is installed. 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 the software necessary for the deployment. 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

Desktop Mount

The FlexSym 205 can simply be placed on top of a desk, a table, a shelf, or any similar object. An optional Wall Mounting Bracket can be used to store excess fiber cable length under the ONT as it sits on a desk or other surface.

Surface Mount

The FlexSym 205 can be attached to a wall, to the top, back, or underside of a desk or table, or to some other surface using the optional Wall Mounting Bracket and screws.

Note: Make sure that the owner of the building or the owner of the individual unit or furniture is aware that holes will be drilled and screws and/or wall anchors will be used to mount the ONT to a wall or to furniture before beginning installation.

Before mounting the FlexSym 205, find the place where the ONT will be mounted and decide how it should be orientated for best access and ease of use. Consider that up to 8 cables may be attached to the rear edge of the ONT, either just after installation or some time later. Also consider that it may be helpful if the user can see the LED Indicators on the top of the unit.

Mounting The Bracket

1. Place the Wall Mounting Bracket on the surface it will be attached to. Position the bracket so that is will hold the ONT in the desired orientation, being aware that the long edge of the bracket that has the entrance and exit holes for the optical fiber cable should be at the back of the ONT (near the connectors).
2. Select at least two holes in the bottom of the bracket and mark the mounting surface.
3. Carefully drill holes in the marked locations appropriate for the fasteners that will be used.
4. Install drywall or masonry anchors in their holes if they will be used.
5. Hold the bracket in position and secure with screws through the selected holes.

Storing Excess Fiber Inside Bracket

If the optical fiber cable is a little long, the excess can be wound around guides molded inside the Wall Mounting Bracket before the ONT is attached. This prevents cable bend radii that are less than optimum. Several feet of cable can be stored inside the bracket.

It is very important that the correct entrance and exit holes in the bracket are used.

1. Mark the optical fiber cable about 10 inches from the end of the connector with a Sharpie or other permanent marker, or a piece of electrical tape.
2. Position the mark on the cable just outside bracket and push the cable into the strain-relief fingers just inside the cable exit hole. The fingers will hold the cable in place while it is wound on the guides.
3. Continue winding the cable around the guides and under the clips until most of the excess cable length is used up.
4. Route the cable out the entry hole in the bracket on the last turn.

Use a short piece of electrical tape to hold the cable in place just inside the entry hole.

Attaching the ONT to the Wall Mounting Bracket

There are four sets of hooks that stick up, out of the Wall Mounting Bracket. These hooks match rectangular holes in the bottom of the ONT case.

ONT205 Rack Mounting

The ONT205 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 ONT205 mounting bracket procedure is located in: Install Guides> Mechanical Assemblies> Universal ONT DIN Rail Mounting Bracket.

Connecting Power

DC power for the Tellabs FlexSym 205 can be provided by one of two optional desktop adapters (150-W and 85-W power bricks) at the point of installation, or by a remote bulk DC power supply.

AC Adapter

Use one of the optional AC adapters plugged into an AC outlet near the ONT installation location tp provide ~54 VDC to the ONT (150-W AC Adapter 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 ONT180C.
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

The process for connecting the DC power from a remote bulk DC power supply is a bit more involved. Note that DC power may be delivered to the ONT via a separate DC power cable or by 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 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 operate.
5. At the bulk DC power supply, restore power to the DC cable.
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 Phoenix DC power connector has power and the polarity is correct, wrap several turns of electrical tape around the screw terminal block to cover the screws and reduce the chances of some metallic shorting across the screw terminals.
8. Plug the Phoenix DC power connector into the ONT DC 54V connector.

If the remote DC bulk power supply is on, the ONT Power LED Indicator will come on in about five seconds and be steady green. (See the LED Behavior Table in the Description page of this document.)

Connecting the Optical Fiber

The optical fiber connector is located on the right 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. Remove power from the ONT.
2. Locate the fiber port on the rear of the ONT.
3. Remove the protective dust cover from the ONT optical connector that was exposed when the cover was removed (if present). Clean and scope the fiber bulkhead and fiber connector per local practices.
4. Orient the optical fiber cable connector so that the raised key molded onto one side of the cable connector matches the keyway in the ONT connector (Figure 2).
5. Slide the cable connector into the ONT connector until a click is felt and heard.

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

Cable Routing and Management

At a minimum, the optical fiber cable and DC power cable will be connected to an ONT. There may be many more 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 usually 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.

If there is excess optical fiber, not wound up inside a Wall Mounting Bracket, it can be loosely coiled and placed behind the desk or another piece of furniture. The optical fiber cable can perform poorly or be damaged if it is bent sharply or crushed. Therefore, a coil of at least 6 inches in diameter is recommended. Use electrical tape or Velcro cable ties to hold the coil 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 is complete, use the following procedure to verify the ONT status and the typical LED status after ONT boot sequence completion:

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

• Verify that the LED lights Green, indicating that the local power level is good.
• Verify that the PON LED lights Green, indicating that the ONT is operating normally.

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

If the PON LED lights are Green, the ONT is communicating with the PON network; no further activation is necessary.

If the PON LED does not light Green, contact the systems administrator for activation assistance with the following information on hand.

• Vendor: Tellabs
• ONT Model Number: 205
• ONT Serial Number: Located on a sticker on the bottom of the ONT