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DESCRIPTION
The Total Access® 372E Active Ethernet Small Business Unit Optical
Network Termination (372E SBU ONT) is an Active Ethernet Fiber-to-the-
Premises (FTTP) ONT built to address the needs of the small business. The
372E SBU ONT includes the following features:
Eight POTS ports
Four DS1 circuit emulated T1 interfaces (for PBX application)
Two 10/100/1000 Ethernet interfaces
The figure below illustrates the 372E SBU ONT inner enclosure.
The Electronics Module Cover has been removed for clarity. This cover
swings to the left after the Telco Access screw is loosened.
Optical technology provides a consistent and common approach to
advancing the public communications network.
The optical network consists of an Optical Line Terminal (OLT) located at
the central office (CO) and Optical Network Terminals (ONTs) located at
the customer premises.
To allow for the transmission of downstream and upstream traffic on one
single fiber, different wavelengths are used for each direction.
Downstream traffic uses 1490 nm, while upstream traffic is carried on
1310 nm. The ONT employs optical diplexers to separate the
wavelengths.
Note: Electronics Module
Cover has been removed
for illustration purposes.
OptiTap
Fiber In
Ground
Power
Note: Cable color is for
clarity purposes only.
SFP Connector
Note: The RJ-11 POTS
ports are used for test
purposes only.
Ethernet
Connection (White)
DS1
Connection (Red)
Tip (Green)
Ring (Red)
TELEPHONE TROUBLESHOOTING:
1. Identify the bad line (POTS 1-8).
2. Plug any working phone into
the appropriate jack.
If the telephone works, the unit
is functioning normally.
If the telephone does not work,
contact your service provider.
3. Remove the telephone from the
POTS jack.
TOTAL ACCESS 373E
1287723G1
Splice Tray
Electronics
Module
Strain Relief
Fiber Optics
Wire
Fiber Splice
(Yellow)
Total Access 372E
Active Ethernet Small Business
Unit ONT
This Job Aid covers the electronics module and housings listed in the
following table:
The Total Access 372E SBU ONT is only intended to be used with the
Corning Systems Model FNI-NG series outdoor NID housing.
INSTALLATION
Before installing the equipment, inspect the 372E SBU ONT. If damage has
occurred during shipping, file a claim with the carrier, and then contact
ADTRAN Customer Support. For more information, refer to the warranty.
Installation Overview
To install the 372E SBU ONT, you will need to do the following:
Step 1: Mount the Enclosure
Step 2: Install the Electronics Module
Step 3: Install Ground Cable
Step 4: Connect Power and Alarm Cables
Step 5: Connect POTS
Step 6: Install Ethernet and DS1 Connections
Step 7: Install OptiTap Fiber Connections
Local Power Source Wiring
Step 8: Install UPS
Required Tools and Supplies
Standard technician tools and those listed below are required for
installing the 372E SBU ONT:
Carpenter’s level
3/32” screw driver for connecting 372E SBU ONT power
5/32” hex tamper proof bit
RJ-45/RJ-11 crimper
A telephony/data communication test set
PON power meter with wavelength filtering
Fiberscope or videoscope
Two #10 screws and appropriate surface anchors for mounting the
372E SBU ONT
Total Access 372E Description
1287723G1 Total Access 373E SBU Electronics Module
1187774G1 Standard SBU Housing
1187775G1 SBU OptiTap Housing
Product P/N: 1287723G1
Issue Date: August 2014
Document P/N: 61287723G1-22B
Documentation for ADTRAN Carrier Networks products is available for
viewing and download directly from the ADTRAN Support Community
website.
Go to: https://supportforums.adtran.com/welcome
Registration is required.
ADTRAN offers training courses on our products, including customized
training and courses taught at our facilities or at customer sites.
For inquiries, go to: http://adtran.com/training
The following documents provide additional information for this product:
Total Access 5000 24-Port Active Ethernet OLT Job Aid
Total Access 5000 Series Fiber to the Premises Deployment Guide
Total Access 5000 Active Ethernet User Interface Guide
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