
ADTRAN, Inc.
Attn: Enterprise Networks
901 Explorer Boulevard
Huntsville, AL 35806
OSU 300
Multiport Optical Service Unit
P.O. Box 140000 Huntsville, AL 
256 
256 
256 
General Information
800 9ADTRAN info@adtran.com www.adtran.com
Technical Support
800 
application.engineer@adtran.com
www.adtran.com/support
Product Specifications
OSU 300 Interface
Single-mode  Interface
■Class 1 
■1310 nm
■Up to 40 km on 
■SC connectors
■Transmitter output power: 
■Receiver sensitivity: 
■1310 nm
■Up to 2 km on 
■ST connectors
Performance Monitoring
Local and Remote Network Port Statistics
■Current 
■
■Severely errored framing seconds
■Line, 
■Line errored, unavailable seconds
■
■
■
■Percent availability
Where to Buy
877 
Post-Sales 
Technical Support
888 
ACES Installation & Maintenance Service
888 
International Inquiries
256 963 8000 voice
256 
www.adtran.com/international
For the regional office nearest you, visit:
www.adtran.com/where2buy
ADTRAN is an ISO 9001: 2000 certified supplier.
ADTRAN is a TL 9000 3.0 certified supplier.
DTE Interface(s)
■Built 
■Three (3) option slots accept any combination of:
HSSI Port(s): Rate: 75 kbps to 44.2 Mbps,
V.35 Port(s): M34 female, Rate: 75 kbps to 10 Mbps
Bridge Interface: Four 10/100 BaseT 
■Bandwidth selectable in 75 kbps increments
■All option cards are hot swappable
■T3SU 
VT100 Terminal Interface
■
■Inband remote configuration and statistics
Clocking
■Loop (slaved to network receive clock)
■Local (private network master)
Diagnostics
■ANSI T1.107 compatible loopbacks
■Line and payload loopbacks
■Built in BERT
■Remote loopbacks
Agency Approvals
■FCC Part 15, Class A, UL and CUL
SNMP/Telnet
■Integrated 10BaseT Ethernet and SLIP/PPP (async) port
■MIB II, RFC 1213 & 1407 compliant
■ADTRAN Enterprise MIB for extended monitoring and DSU control/configuration
Environment
■Operating Temperature: 0° to 50° C, (32° to 122° F)
■Storage Temperature: 
■Relative Humidity: Up to 95%, 
Physical
■Dimensions: 1.7" H, 11.625" D, 17" W; fits 1U 19" rack
■Weight: 5 lbs
■Power: 120 VAC or 
Product Includes
■One 
■19" rackmount kit
Ordering Information
Equipment | Part #  | 
  | 
  | 
OSU 300 DC,   | 1200663L1  | 
OSU 300 DC,   | 1200663L4  | 
  | 
  | 
OSU 300 AC,   | 4200663L1  | 
OSU 300 AC,   | 4200663L4  | 
  | 
  | 
HSSI Module  | 1200218L1  | 
V.35 Module  | 1200219L1  | 
  | 
  | 
Quad Bridge Module  | 1200655L1  | 
23" Rackmount Kit  | 1200171L1  | 
  | 
  | 
AC to 48 Volt DC Converter | 1202470L1  | 
Copyright © 2005 ADTRAN, Inc.
All rights reserved.
Specifications subject to change without notice. OSU 300 is a trademark of ADTRAN, Inc. ADTRAN is a registered trademark of ADTRAN, Inc. All registered trademarks and trade- marks mentioned in this publication are the property of their respective owners.