ADTRAN 1200218L1, User Manual

Page: 19 / 122

61200663L1-1 OSU 300 User Manual 1-1
Chapter 1
Introduction
PRODUCT OVERVIEW
The OSU 300 is a multiport DSU/CSU (data service unit/channel
service unit) that provides access to high-speed services over
single-mode or multi-mode fiber. The unit provides a cost-effective,
versatile approach for delivering high-speed frame relay and
dedicated digital services at data rates from 75.18 kbps to
44.2 Mbps. The TDM (time division multiplexer) multiport design
allows you to share the cost of the fiber link between multiple
applications. This unit maximizes the use of high-speed services,
providing up to four data ports capable of transmitting and
receiving high-capacity, realtime data.
The OSU 300 contains a built-in HSSI (high speed serial interface)
port and three expansion slots which accept additional HSSI, V.35,
or Quad DSX-1 interface cards. The HSSI interfaces support rates
between 75 kbps and 44.2 Mbps in 75-kbps increments. The high-
speed V.35 interface option card supports rates up to 10 Mbps in
increments of 75 kbps. The Quad DSX-1 interface card provides
four DSX-1 lines. Each DSX-1 port supports rates up to 1.544 Mbps.
Embedded SNMP (simple network management protocol) and
Telnet are available through either a SLIP/PPP or a 10BaseT
Ethernet port. Through the Management Information Base II (MIB
II), and RFC 1213 and 1407 standards, and an ADTRAN Enterprise
MIB, the OSU 300 can be configured, monitored, and diagnosed
using standard SNMP network management programs such as
Hewlett Packard’s HP OpenView™, IBM’s Netview™, Cabletron’s
Spectrum™, and MACS.