LoopStar® 800/810/1600 SONET Access Systems

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LoopStar
®
800/810/1600
SONET Access Systems
Ethernet Business Service Delivery Applications
The LoopStar
®
800/810/1600 SONET Access Systems enable service providers to optimize the use
of their fiber facilities by delivering Ethernet business services from a low-cost, flexible and
compact, next-generation SONET network element.
Overview
ADC’s LoopStar SONET system is designed to enable service providers to easily and economically
provide Ethernet business services to enterprise customers looking to increase their bandwidth
above current DS1 or DS3 speeds. These systems efficiently transport layer 2 Ethernet service
over SONET while providing the level of redundancy and protection associated with traditional
SONET networks. The LoopStar SONET system is designed to be rack or wall mounted for
individual and/or multi-tenant business units. At a single location, the LoopStar 1600 can cost
effectively provide 48 10/100BTs or 12 GigEs or a combination of both. The LoopStar 800 can cost
effectively provide 32 10/100BTs or 8 GigEs or a combination of both and the LoopStar 810
can cost effectively provide 16 10/100BTs.
LoopStar 800 System
ApplicAtion note
Bandwidth Efficiency
The LoopStar 800/810/1600 feature both high and low order virtual concatenation (VCAT) for mapping
Ethernet traffic into SONET. This provides a significant increase in the efficiency of the SONET pipe over
previous STS-1 limited mapping. High order VCAT scales in 50 Mbps increments while low order VCAT
scales in 1.5 Mbps increments. The table below shows the increased efficiency of using high order and
low order VCAT to transmit Ethernet services over SONET.
Service Interface Bit Rate Utilization without VCAT Utilization with VCAT

Ethernet 10 Mbps STS1 (20%) VT 1.5s -7 (80%)
Fast Ethernet 100 Mbps STS-3c (67%) STS-1 2 (100%)
Gigabit Ethernet 1000 Mbps STS-48c (42%) STS-1 20 (100%)
The Generic Framing Procedure (GFP) protocol of mapping Ethernet into SONET is also provided. GFP is
a standards-based encapsulation of both L2/L3 PDU and block-coded signals. GFP enables the mixing of
these types of signals in the same pipe but not the same VCAT group.
Ethernet Service Functionality
The LoopStar SONET system's layer 2 Ethernet functionality provides statistical multiplexing that
exploits the peak characteristics of data traffic with over-subscription of bandwidth to further increase
bandwidth efficiency. Quality of Service (QoS) via 802.1Q is also provided to enable applications with
low tolerance for delay and packet loss such as Voice over IP and IP Video. Quality of service will permit
service providers to provide different classes of service with different Service Level Agreements (SLA).
This enables enterprise customers to subscribe only to the class of service required for their applications,
which minimizes costs and ensures proper service delivery. The LoopStar 800/810/1600 systems'
Ethernet rate-limiting flow control offers service providers the ability to set a customer’s peak bandwidth
for an Ethernet service and charge accordingly. By simply using remote provisioning, the Ethernet
service contract can be increased to change the rate limit. The LoopStar 800/810/1600 solution is more800/810/1600 solution is more solution is more
effective than today’s ATM and Frame Relay data services that require both transport layer 1 rewiring
and layer 2 service contract provisioning.
Aggregation of Time Division Multiplexed and Ethernet Business Services
The LoopStar 800/810/1600 are next generation SONET elements that can provide traditional
TDM-based DS1, DS3 and OC3/12 services along with 10/100BT and Gig-E Ethernet services.
As business customers migrate to IP/Ethernet services, DS1 and DS3 business access services still need
to be supported, and the flexibility of the LoopStar SONET system provides for all. For example, the
LoopStar 800 can simultaneously provide 16 10/100BT Ethernet interfaces, 28 DS1 interfaces and 12
DS3 interfaces -- all in a compact two rack-unit element. The LoopStar 810 can provide 8 10/100BT
Ethernet interfaces while providing 14 DSIs and three DS3s.
Summary
ADC’s LoopStar SONET system is a low-cost, compact, next-generation SONET network element that
enables the cost-effective delivery of Ethernet business services. The benefits the LoopStar 800/810/1600

provide include bandwidth efficiency to minimize transport costs and Ethernet service functionality to
meet the requirements of service providers for class-of-service SLA flexibility. In addition, they aggregate
TDM and Ethernet for simultaneous deployment of both legacy and new packet- based services and
deliver SONET network reliability.
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Specifications published here are current as of the date of publication of this document. Because we are continuously
improving our products, ADC reserves the right to change specifications without prior notice. At any time, you may
verify product specifications by contacting our headquarters office in Minneapolis. ADC Telecommunications, Inc.
views its patent portfolio as an important corporate asset and vigorously enforces its patents. Products or features
contained herein may be covered by one or more U.S. or foreign patents. An Equal Opportunity Employer
102136AE 2/06 Revision © 2006 ADC Telecommunications, Inc. All Rights Reserved