Specifications

S D H / S O N E T M U L T I P L E X E R S
120
RAD Data Communications 2009 Catalog
Optimux-1551 and Optimux-1553 terminal
multiplexers deliver traditional PDH services over
existing SDH/SONET networks. They combine
the high capacity associated with SDH/SONET
add and drop multiplexers (ADMs) with the
simplicity and low cost of a terminal multiplexer,
significantly reducing operating and capital
expenses (OpEx and CapEx).
High capacity in a compact unit
The 2U-high Optimux-1551 provides
connectivity for up to 63 E1 or 84 T1 lines, and
the 1U-high Optimux-1553 provides connectivity
for three E3 or three T3 lines. The products
comply with all SDH/SONET standards, and
interface with existing SDH/SONET backbones
through a single or redundant STM-1, OC-3 or
STS-3 interface.
The Optimux-1551 can be ordered with
21 x E1/28 x T1 channels, 42 x E1/56 x T1
channels or 63 x E1/84 x T1 channels.
Carrier-class design
Designed for the rigorous requirements of
carriers and service providers, Optimux-1551 and
Optimux-1553 devices offer a high level of
reliability and manageability. Hardware
redundancy is designed into the system without
the need for custom Y-cables or external
devices. This 1+1 redundancy is provided for all
user interfaces through an optional second, hot-
swappable multiplexer card. 1+1 redundancy is
also available for the STM-1/OC-3 main link
(unidirectional APS/MSP) and power supply
modules. This reliable platform maximizes uptime
for mission-critical applications. A fully equipped
Optimux-1551 fits in a single 2U-high 19-inch
shelf while the Optimux-1553 occupies a
1U-high shelf.
Higher revenues at lower cost
The Optimux devices allow service providers to
extend their network to remote customers,
thereby enlarging their customer reach and
increasing revenues, without the expenses
associated with deploying high-end ADMs,
which add unnecessary cost and complexity in
point-to-network connections. Compared to the
alternative of deploying PDH multiplexers at
customer sites, the Optimux devices interface
directly with the existing SDH/SONET TDM
infrastructures and consolidate traffic at the
edge of the network. This enables service
providers to save the cost of fiber deployment
and of multiple ports on the ADM.
Plug-and-play operation
Easy to install, maintain and operate, Optimux
products require no training or expertise. As
completely plug-and-play units, the products
allow carriers to extend the benefits of
SDH/SONET networks to the customer premises
or central office in a quick and inexpensive
manner.
Typical applications
Optimux devices are especially suitable for
extending SDH/SONET network services toward
remote and suburban locations such as
industrial areas and business parks. They are
the ideal choice for delivering multiple E1/T1 or
E3/T3 services.
The Optimux units can be deployed in point-to-
point applications, connecting two sites over
fiber, to distances of up to 80 km (50 miles).
A service provider can use Optimux-1551 to
deliver E1/T1 services and Internet access to
multiple customers, and use Optimux-1553 to
provide E3/T3 lines to large enterprises with
higher bandwidth requirements. Together with
Optimux-34 (for E3) or Optimux-45/45L (for T3),
RAD’s Optimux-1553 can be used to combine
E1/T1 and E3/T3 services over a single
STM-1/OC-3 line.
The units are 19-inch wide, and 2U-high for the
Optimux-1551 and 1U-high for Optimux-1553.
• SDH/SONET terminal multiplexers
connect lower rate PDH services over a
single STM-1/OC-3 (155 Mbps) link
• Optimux-1551 multiplexes up to 63 E1
or 84 T1 tributary channels
• Optimux-1553 multiplexes three E3 or
three T3 tributary channels
• Channelized STM-1/OC-3 main link with
standard fiber optic (single mode,
multimode and WDM) or coaxial
interface
• Supports 1+1 unidirectional automatic
protection switching (APS) on
STM-1/OC-3 uplink; 1+1 protection
on DS1 or DS3 tributaries and power
supply modules
• Provides a demarcation point between
the carrier network and the customer
network
• Includes SNMP agent, RS-232 and
Ethernet management ports
• Configuration, service, performance,
security, and fault management via
ASCII terminal, Telnet or RADview
network management systems
• Range up to 80 km (50 miles)
• Plug-and-play
STM-1/OC-3
Customer Premises
E1/T1
Optimux-1551
SDH/SONET
ADM
ADM
E3/T3
Optimux-1553
ADM
STM-1/OC-3
Router
PBX
IP
Network
Fan-out services from standard equipment
Optimux-1551,
Optimux-1553
STM-1/OC-3 Terminal Multiplexers
For latest updates visit www.rad.com
Optimux-1551