Application Fact Sheet
Freescale Semiconductor, Inc.
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• Simplified universal line
card design for multiple
DSLAM line card
instantiations, delivering
cost efficiencies and
faster development
• High density aggregation
of subscriber line xDSL
ports – from 32 xDSLs to
128 xDSLs – using a
single C-3e NP, and even
higher density with a
C-5e NP
• Wide range of
networking uplink card
interfaces and speeds
including GbE, OC-3c,
OC-12c, and OC-48c with
a supporting library of
reference software
Digital Subscriber Line Access Multiplexers (DSLAMs)
are a leading broadband access technology, delivering
exceptionally high-speed data transmission over existing
copper telephone lines. In the process, they are
transforming the existing public network to a highperformance, multiservice network. DSLAMs support a
wide variety of high-bandwidth applications including
voice on demand, high-speed Internet access, and
streaming multimedia content. Next-generation DSLAM
platforms will offer greater density and lower cost
per port along with more diversity in services (such
as voice gateways and virtual private networks) using
multiple DSL transports such as ADSL, VDSL, HDSL,
SHDSL, and so on.
Motorola offers a family of integrated network processors and software that addresses these specific DSLAM
requirements, along with high density and scalability,
enabling the development of high-performance, multiservice DSLAMs.
Typical DSLAM systems are ATM based with the primary
role of aggregating multiple xDSLs for uplink to the network. The number of subscribers a DSLAM can handle is
a key requirement and supporting such high density per
platform or card requires a range of interfaces and
speeds. On the networking uplink services side, where
ATM is prevalent, IP routing is gaining quickly while
some systems require support for Frame Relay and TDM
traffic. Consequently, any solution must to be able to
handle the diversity and interworking of networking technologies such as IP-to-ATM switching and Segmentation
and Reassembly (SARing). The trend toward value-added
services such as Quality of Service (QoS) capabilities,
VPN gateways, and media gateways necessitates a total
system approach leveraging a universal line card strategy where software reuse and reuse of previous line card
designs can lower overall development costs and bring
your product to market faster.
• Supports queuing,
shaping, and policing for
individual ATM and IP
flows for each ADSL line,
supporting ATM Traffic
Management 4.1, IP
DiffServ, IntServ and
Today’s DSL network
places demands on a
DSLAM system to
support high DSL line
density for ATM and IP
traffic while providing
QoS guarantees and
other services to
individual users
• Broad range of DSLAM
value-added services,
such as advanced QoS
and VPN security,
available from Motorola
and its Alliances
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Motorola is your single
source for comprehensive,
embedded solutions for
DSLAM architectures —
providing network processing,
host processing, and traffic
management technologies
Bottom line: a DSLAM design must combine the best
of density, speed, functionality, scalability, and cost
Additional design challenges include the need for:
• Backhaul services for packet, cell and circuit-based
applications through concentration of high density
DSL lines onto 10/100 Base-T, T1/E1, T3/E3 and ATM
outputs (OC-3/12/48), and scalability so that uplink
capacity can be appropriately matched with future
• Inherent multiservice capabilities for ATM, Frame
Relay, IP and TDM on a single platform using multiple
DSL transports such as ADSL, SDSL, RADSL and
• A full suite of QoS service performance guarantees in
order to manage the rising demand of new services,
network models, and applications, such as packetized
voice and video.
• Temperature ‘hardened’ devices for installation in
areas that are not environmentally controlled (such as
remote terminals or curbside cabinets) and adhering
to network equipment building standards (NEBS).
Motorola offers a complete line of communications
processors and reference software for solving your
DSLAM design challenges. Motorola’s communications
processors include the C-Port family of network
processors (C-3e NP and C-5e NP), traffic management
coprocessors (TMCs), and interface adapters. Plus you
can leverage Motorola’s host processors (PowerPC®) and
security processors (MPC185 and MPC190) as needed by
your design.
In addition, you can use Motorola’s library of reference
software for the C-Port family (called C-Ware
Applications Library) that provides data plane code that
can be mixed and matched to best address your DSLAM
line card requirements for both subscriber line cards, up
link cards, and even combinations thereof.
The C-3e NP handles high-density DSL aggregation ranging from 32 to 64 to 196 lines (with an external Utopia 2
interface adapter) or greater densities with the C-5e
NPs. The C-Port TMCs provide queuing, shaping, and
policing for individual ATM and IP flows for each ADSL
line. This ensures that delay-sensitive traffic traversing
over congested networks can do so in a timely fashion.
The TMCs support ATM Traffic Management 4.1, IP DiffServ, IntServ, and MPLS QoS. These features enhance a
DSLAM vendor’s ability to support new, value-added,
revenue generating services for applications requiring
guaranteed classes of services, such as voice on
demand, video conferencing, and multimedia streaming,
all across xDSL lines.
C-Port network processors are well suited for uplink card
applications, able to handle a range of network interfaces and speeds, from sub T1, T1/E1, OC-3, OC-12, and
up to OC-48c. C-Port NPs also enable the interworking of
multiple network services including AAL-5 and AAL-2.
C-Port NPs come integrated with a high degree of functionality including queuing and classification coprocessing, and SMS flow accounting capabilities, critical for
the management and billing of DSLAM services. As your
product functionality evolves, the C-Port NPs can be easily reprogrammed to address new requirements because
C-Port NPs are programmed in C-language using Applications Programming Interfaces (APIs).
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In addition, you can leverage the offerings of Motorola’s
Smart Networks Alliance Program to further enhance
your DSLAM solutions.
The C-Port family development environment consists of
the following components:
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• C-Ware Software Toolset (CST) — Functional
and performance accurate simulation environment,
standard GNU-based compiler and debugger, GUI
performance analysis tool, traffic scripting tools, and
C-Ware APIs.
• C-Ware Applications Library (CAL) — Provides an
extensive library of reference applications containing
key protocols for supporting popular DSLAM oriented
applications including: L2/L3 switching/routing, IPv4,
IPv6, tunneling protocols (L2TP, PPPoE, etc.) acceleration, ML-PPP, MC-PPP, IP Multicast, MPLS, VLAN,
IMA, ATM VPI/VCI switching along with interworking/
SARing including AAL-2 and AAL-5.
• C-Ware Development System (CDS) — Compact
PCI chassis with Motorola MPC750 Host Application
Module, which can also include NP Switch Modules,
TMC Daughter Cards, and various Physical Interface
Modules (PIMS). Complete hardware reference
designs also available.
C-3e NP
5.5 W @ 180 MHz
C-5e NP
9 W @ 266 MHz
5Gbps throughput
MPC185 & MPC190
Security Processors
C-Ware Software
Web site download of current CST
release (Windows or UNIX)
C-Ware Development
CDS Base Unit (Chassis, Power Supply,
Single Board Computer)
* The CST can be downloaded from
† Ask your sales representative or distributor for details and availability of system modules, which you
order separately.
For high-performance security
Tel: 480-648-2300
[email protected]
For advanced classification
Tel: 613-724-6004
Fax: 613-724-6008
Wind River Systems
For Tornado for Managed Switches
and RTOS
Tel: 800-545-9463
Fax: 510-814-2010
Additionally, the C-Port family development environment
supports host software integration with:
• Comprehensive host side API
• Integration with signaling protocols in shipped
• Traffic manager APIs for QoS configuration
Vendors may also select Wind River® Tornado® for
Managed Switches (TMS) to program the host
processor/control plane software. Motorola has established an alliance with Wind River to provide integration
of C-Port network processors with TMS 2.0 supporting
both Layer 2 and Layer 3 services. In addition, the Host
Application Module in the CDS runs VxWorks® on the
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Center at 800-521-6247, or visit us online at
© 2003 Motorola. C-3e, C-5, C-5e, C-Port, Q-5, M-5, and C-Ware are trademarks of Motorola Inc. Motorola and the
stylized Motorola logo are registered trademarks of Motorola Inc. All other products or service names are the
property of their owners.
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