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Application NoteTelecom Accelerating Deployment
of IP MultimediaSubsystems (IMS)IMS Telco Server Proof of Concept
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Application Note Accelerating Deployment of IP Multimedia Subsystems (IMS)
Executive SummaryBecause of the heavy technical demands placed on an IP MultimediaSubsystem (IMS), AdvancedTCA* promises to be an ideal platform for IMSinfrastructure deployment. To explore this promise and to demonstrate theapplicability of Intel® products and the products of the AdvancedTCAecosystem, Intel is creating a series of Proof of Concept platforms for IMS.
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Accelerating Deployment of IP Multimedia Subsystems (IMS) Application Note
Table of ContentsWhat Is the IMS Telco Server Proof of Concept? , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 2
Functional Description , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 3
Call Session Control Function , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 3
Security Gateway , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 3
Home Subscriber Service , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 4
Key Technologies , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 4
Secure Packet Processing Blades , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,4
Intel® Extended Memory 64 Technology , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 4
iSCSI Storage Blades , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 4
Configuration , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 5
Broad Community of Vendors , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 5
Adtron Corporation , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 5
FOKUS , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 5
Rittal Gmbh , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 5
ZYNX Networks , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 5
Acronyms , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 6
For More Information , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 6
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Application Note Accelerating Deployment of IP Multimedia Subsystems (IMS)
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What Is the IMS Telco Server Proofof Concept? The IMS Telco Server Proof of Concept is a fully
functioning platform designed to showcase
products for the IP Multimedia Subsystem (IMS)
that are compliant with the Advanced Telecom
Computing Architecture* (AdvancedTCA or ATCA*)
specification.
IMS is a modular standards-based service platform
that uses the Internet Protocol (IP) and the
Session Initiation Protocol (SIP) for the delivery of
IP-based services across wireless and wireline
networks. The IMS specification was developed by
the Third Generation Partnership Project (3GPP*),
a collaboration among a number of telecommuni-
cations standards bodies, and AdvancedTCA by
the PCI Industrial Computer Manufacturers Group
(PICMG*).
The Proof of Concept is available for use as a
seed platform for Telecom Equipment
Manufacturers (TEMs), Service Providers, and
Independent Software Vendors (ISVs) to help
accelerate time-to-market by enabling rapid
application porting and development as well as
interoperability and functional testing.
The Proof of Concept showcases leading-edge
products from Intel and the AdvancedTCA
ecosystem, including members of the Intel®
Communications Alliance. It is not designed to be
sold by Intel, but the Proof of Concept design,
specifications, and configurations will be made
broadly available to facilitate third parties in
bringing their own versions to market in a timely
fashion. Intel will also alter the Proof of Concept
with incremental additions of functionality to
continually push the performance parameters of
the system.
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Accelerating Deployment of IP Multimedia Subsystems (IMS) Application Note
Functional DescriptionThe Proof of Concept demonstrates performance
in three key functional areas of the IMS frame-
work: Call Session Control Function (CSCF),
Security Gateway, and Home Subscriber Service
(HSS). See Figure 1 for an illustration of how the
Proof of Concept functions.
Call Session Control Function
The Call Session Control Function (CSCF) handles
all SIP-based signaling associated with call setup
and teardown and basic SIP message exchange,
which includes authentication. The Proof of
Concept showcases single board computers with
Dual Intel® Xeon® processors that include Intel®
Extended Memory 64 Technology (Intel® EM64T).
The single board computers are running the
“Open IMS Playground@FOKUS” from the
Fraunhofer Institute for Open Communication
Systems (FOKUS). This system demonstrates the
flow of SIP messages as they move between IMS
elements.
Security Gateway
The security gateway tunnels traffic between
different networks. It facilitates communication
through NAT servers and firewalls and performs
other security functions such as packet filtering
and policy enforcement. The Proof of Concept
uses the Intel NetStructure® IXB28504xGbEF
Secure Packet Processing Blade to perform the
high-level secure packet processing functionality
Figure 1. Functional Illustration for the Proof of Concept
IPSEC+ IKE
SecurePacket
ProcessingBlade
LB +NPF API
SingleBoard
Computer
CSCF
SingleBoard
Computer
HSSIn-Mem DB
SingleBoard
Computer
HSSDisk DB(Raid 1)
iSCSIStorage
IPSECVPN
IMS SIPClient
IPSECVPN
IMS SIPClient
Router/Firewall
IPV4<->IPV6, NATFabric 1 (SIP)
Base (Management)
Base andFabricSwitch
1-4GE
WAN
GE1-2GE
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Application Note Accelerating Deployment of IP Multimedia Subsystems (IMS)
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required by features such as IPsec. This facilitates
rapid enforcement of security policies within the
security gateway.
Home Subscriber Service
The Home Subscriber Service (HSS) provides data
storage for subscriber and service-related data
including user identities, registration information,
access parameters, and service-triggering
information. The HSS typically stores up to 10 KB
of storage per subscriber. An HSS supporting one
million subscribers would require 64-bit linear
addressing to allow fast access to an in-memory
cache of information. In the Proof of Concept,
these are provided by high-performance
processors with Intel EM64T and iSCSI
storage blades.
Key TechnologiesThe IXB28504xGbEF, Intel EM64T, and iSCSI
storage blades, all of which are used in the Proof
of Concept, are discussed in this section.
Secure Packet Processing Blades
The IXB28504xGbEF is a high-performance
secure packet processing blade with the
AdvancedTCA form factor, which uses the Intel®
IXP2850 network processor to provide optimized
packet and content processing functions for IMS
applications. In the Proof of Concept, the
IXB28504xGbEF acts as a security gateway and
uses the two integrated cryptographic units in the
IXP2850 to accelerate IPsec cryptographic
algorithms such as the Advanced Encryption
Standard (AES) and Triple Data Encryption
Standard (3DES). The IXB28504xGbEF is
designed to provide high-performance packet
processing for up to 4 Gbps of Ethernet traffic
and features a 4x1Gbps I/O interface to the
external WAN or LAN. The Intel design provides a
highly available system with redundant and
partitioned paths for control and payload traffic.
Intel® Extended Memory 64 Technology
Intel EM64T provides full native 32-bit
performance for 32-bit applications while allowing
code that is recompiled for 64-bit processing to
access more memory. In the Proof of Concept,
Intel EM64T improves the performance of single
board computers with 2.8 GHz Dual Intel Xeon
processors by allowing the system to address
more than 4 GB of both virtual and physical
memory. Intel EM64T provides support for:
• 64-bit flat virtual address space
• 64-bit pointers
• 64-bit wide general purpose registers
• 64-bit integer support
• Up to 1 terabyte (TB) of platform address space
The Intel Xeon processors with Intel EM64T in the
Proof of Concept deliver outstanding power and
performance for functions in an application server
handling video, games, and messaging applica-
tions or in a media server handling media
streaming of voice, video, and text. They are ideal
for compute-intensive IMS applications.
iSCSI Storage Blades
iSCSI storage blades are needed for rapid data
transfer within an IMS to accelerate data storage.
The Adtron EA8R Bladepak* GigE ATCA storage
blade uses the Intel® IOP321 I/O Processor with
Intel XScale® technology running iSCSI target
software to provide I/O processing on the storage
blade over the GigE interface. With the IOP321,
Adtron storage blades can deliver high perform-
ance for managing data storage and retrieval for
multiple hosts, and two backplane-connected
Gigabit Ethernet (Gbps) interfaces that ensure
redundancy in a dual star configuration. In this
Proof of Concept, the Adtron storage blades
handle subscriber and service-related data such as
identities, registration, and access held in the HSS.
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Accelerating Deployment of IP Multimedia Subsystems (IMS) Application Note
ConfigurationFigure 2 provides a schematic of the current Proof
of Concept with a Product Key.
Broad Community of TechnologyProvidersThe Proof of Concept is a fully integrated, modular
communications platform that uses a number of
Intel products. However, it also benefits from the
wealth of experience with both IMS and
AdvancedTCA developed by members of the
Intel® Communications Alliance and the industry
at large. The technology providers in the current
Proof of Concept and their products are described
briefly below.
Adtron Corporation
Adtron is a leading data storage company that
provides application-specific solutions for a wide
variety of storage requirements. For more
information, visit http://www.adtron.com/.
FOKUS
FOKUS researches and develops mobile communi-
cations systems in wireless and wired networks.
FOKUS engineers the modules that enable the
seamless integration of technology with end
devices and the deployment of open flexible
communications services and applications. For
more information, visit http://www.fokus.com/.
Rittal Gmbh
Rittal Gmbh is one of the leading providers of
housing and enclosure technologies. The Rittal
AdvancedTCA chassis is designed to ensure
system availability through redundant power,
management module slots, and carrier-grade
power and thermal characteristics. For more
information, visit http://www.rittal.com/.
ZNYX Networks
ZNYX Networks is the leading global provider of
high-availability embedded Ethernet solutions for
carrier-grade systems and is an Affiliate member
of the Intel Communications Alliance. For more
information, visit http://www.zynxnetworks.com/.
Figure 2. Proof of Concept Schematic with Product Key
Sing
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HSSDemo
ZNYXIKE
CMM
CMM
IPSecSW
Adtron EA8R Bladepak* GigE ATCA Storage Blade
Dual Intel® Xeon® Processor with Intel®Extended Memory 64 Technology (Intel® EM64T)
Intel NetStructure® IXB28504xGbEFSSecure Packet Processing Blade
Intel NetStructure® MPCMM0001Chassis Management Module
ZNYX ZX7000*
Product Key
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Application Note Accelerating Deployment of IP Multimedia Subsystems (IMS)
6
Acronyms 3DES Triple Data Encryption Standard
3GPP Third Generation Partnership
Project
AES Advanced Encryption Standard
ATCA Advanced Telecom Computing
Architecture (AdvancedTCA)
CSCF Call Session Control Function
GigE Gigabit Ethernet
Gbps Gigabit Per Second
HSS Home Subscriber Service
IKE Internet Key Exchange
IMS IP Multimedia Subsystem
IPsec IP Security
iSCSI Internet Small Computer System
Interface
IP Internet Protocol
ISV Independent Software Vendor
MCP Modular Communications
Platforms
PICMG PCI Industrial Computer
Manufacturers Group
SIP Session Initiation Protocol
SW Software
TEM Telecom Equipment Manufacturer
For More Information Because the technology and products in a Proof
of Concept are leading edge, it is important to
keep up with the latest information about them.
The websites listed below can help.
IMS
http://www.intel.com/go/IMS
AdvancedTCA
http://www.intel.com/go/ATCA
AdvancedTCA Products
http://www.intel.com/go/ATCAprod
Intel Telecom Products
http://www.intel.com/go/telecom
9667FN01.qxd 3/27/06 10:18 AM Page 6
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