latin america rad américa latina s.a. arévalo 2774, floor 6 1426 buenos aires, argentina tel:...

The RAD name and logo and the term TDMoIP are registered trademarks of RAD Data Communications Ltd. All product names are the property of RAD Data Communications. © 2008 RAD Data Communications Ltd. All rights reserved. Subject to change without notice. Catalog no. 802416 Version 06/08.

Pseudowires

Pseudowire Technologywww.rad.com

Local OfficesBrazilRAD do Brasil Ltda.Edifício Diamond Tower Rua Maestro Cardim, 1.191,13º andar, Cj. 135 CEP 01323-001,São Paulo, SP, BrazilTel: 11-3628-3856 Fax: 11-3253-7754email: [email protected]

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IndiaRAD Data Communications Pvt. Ltd.407, Madhava, Plot No. C-4, E-BlockBandra-Kurla ComplexBandra (East) Mumbai 400 051IndiaTel: 91-22-65-200200Fax: 91-22-30-683687email: [email protected]

JapanRAD Japan K.K.Bureau Toranomon 10F2-7-16 Toranomon, Minato-kuTokyo, JapanTel: 81-3-5251 3651Fax: 81-3-5251 3652email: [email protected]

RussiaRAD Data Communications Ltd.10, B. Tulskaya St., Building 9Floor 7, Office 9705Moscow, 115191, RussiaTel: 7-495-231-1239Fax: 7-495-231-1097email: [email protected]

United KingdomRAD Data Communications Ltd. (UK)6 Fortuna Court, Calleva ParkAldermaston, Berkshire RG7 8UBEnglandTel: 44-1189-820900Fax: 44-1189-812600email: [email protected]

International HeadquartersRAD Data Communications Ltd.24 Raoul Wallenberg StreetTel Aviv 69719, IsraelTel: 972-3-6458181Fax: 972-3-6498250email: [email protected]

North America HeadquartersRAD Data Communications, Inc.900 Corporate DriveMahwah, NJ 07430, USATel: 1-201-529-1100Toll free: 1-800-444-7234Fax: 1-201-529-5777email: [email protected]

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OceaniaRAD Australia Pty. Ltd.434 St Kilda Rd, Suite 412Melbourne, Victoria 3004, AustraliaTel: 61-3-9820-2575Fax: 61-3-9866-7566email: [email protected]

Enabling Cross-Generation Access

next-generation

Born of the necessity to encapsulate and

tunnel Layer 2 protocols across a Layer 3

network, pseudowires are implemented

today in virtually every mainstream service,

transparently carrying voice, video and

data traffic end-to-end over Ethernet, IP or

MPLS backbones. As the telecom industry

transitions to economical, higher bandwidth

packet transport, pseudowires ensure

service continuity for legacy applications

and provide cross-generation support for

enterprises, service providers, carriers, and

mobile operators.

During the last decade, pseudowire technology has been established as the de facto enabler for migrating legacy communications services to next-generation networks.

Bridging Network Generations: From Legacy to Packet

Since first introducing TDMoIP pseudowire encapsulation to the market in 1999, RAD Data

Communications has deployed more than 60,000 TDM and ATM pseudowire ports worldwide.

Our field-proven solutions benefit a wide spectrum of clients, in a multitude of applications:

Incumbent carriers cut operating

expenditures (OpEx) by moving to cost-

effective packet-switched networks,

while ensuring quality delivery of their

ongoing voice and data commitments

to minimize customer churn.

Service providers and cable

operators with packet-based

infrastructure grow their customer base

by adding traditional leased line and

private line services to their Layer 2

portfolio.

Mobile operators and transport

providers reduce backhaul costs and

increase transmission capacity to

accommodate new mobile broadband

services, by streamlining all generations

of mobile traffic over Ethernet and

MPLS networks.

Utility and transportation

companies extend a wide variety

of services to remote facilities while

simplifying operations, ensuring

network resiliency and securing a

smooth migration path to packet-

switched transport.

Enterprises reduce their IT expenses

on PSTN connectivity and branch-

to-branch communications. RAD’s

pseudowire customer located

equipment (CLE) allows enterprises

to replace expensive leased lines with

cost-effective packet-based services,

consolidating PBX, ISDN BRI, video, and

data traffic over a single, economical

Ethernet link.

Compelling Benefits

Minimizing capital expenditures (CapEx) by eliminating the need to invest in separate, service-dedicated networks, or to replace existing end-user equipment installed-base

Simplifying network management, maintenance and operations by allowing the use of integrated transport infrastructure for all service generations

Enabling a non-disruptive upgrade of legacy services to future-ready networks without affecting service quality or customer experience

Providing a quick route to packet transport’s low cost, high capacity, scalability, and simplicity

Allowing more users to be served by the same infrastructure by optimizing bandwidth efficiency

Offering a high degree of flexibility in determining the migration path by allowing access agnostic delivery of all services and transmission protocols

A Wide Spectrum of Users

next-generation

Born of the necessity to encapsulate and

tunnel Layer 2 protocols across a Layer 3

network, pseudowires are implemented

today in virtually every mainstream service,

transparently carrying voice, video and

data traffic end-to-end over Ethernet, IP or

MPLS backbones. As the telecom industry

transitions to economical, higher bandwidth

packet transport, pseudowires ensure

service continuity for legacy applications

and provide cross-generation support for

enterprises, service providers, carriers, and

mobile operators.

During the last decade, pseudowire technology has been established as the de facto enabler for migrating legacy communications services to next-generation networks.

Bridging Network Generations: From Legacy to Packet

Since first introducing TDMoIP pseudowire encapsulation to the market in 1999, RAD Data

Communications has deployed more than 60,000 TDM and ATM pseudowire ports worldwide.

Our field-proven solutions benefit a wide spectrum of clients, in a multitude of applications:

Incumbent carriers cut operating

expenditures (OpEx) by moving to cost-

effective packet-switched networks,

while ensuring quality delivery of their

ongoing voice and data commitments

to minimize customer churn.

Service providers and cable

operators with packet-based

infrastructure grow their customer base

by adding traditional leased line and

private line services to their Layer 2

portfolio.

Mobile operators and transport

providers reduce backhaul costs and

increase transmission capacity to

accommodate new mobile broadband

services, by streamlining all generations

of mobile traffic over Ethernet and

MPLS networks.

Utility and transportation

companies extend a wide variety

of services to remote facilities while

simplifying operations, ensuring

network resiliency and securing a

smooth migration path to packet-

switched transport.

Enterprises reduce their IT expenses

on PSTN connectivity and branch-

to-branch communications. RAD’s

pseudowire customer located

equipment (CLE) allows enterprises

to replace expensive leased lines with

cost-effective packet-based services,

consolidating PBX, ISDN BRI, video, and

data traffic over a single, economical

Ethernet link.

Compelling Benefits

Minimizing capital expenditures (CapEx) by eliminating the need to invest in separate, service-dedicated networks, or to replace existing end-user equipment installed-base

Simplifying network management, maintenance and operations by allowing the use of integrated transport infrastructure for all service generations

Enabling a non-disruptive upgrade of legacy services to future-ready networks without affecting service quality or customer experience

Providing a quick route to packet transport’s low cost, high capacity, scalability, and simplicity

Allowing more users to be served by the same infrastructure by optimizing bandwidth efficiency

Offering a high degree of flexibility in determining the migration path by allowing access agnostic delivery of all services and transmission protocols

A Wide Spectrum of Users

TimingWhat are Pseudowires?

Ethernet/IP/MPLS Network

PW Packets

PW Tunnel

Service Traffic

TDM/ATM/FR

Service Traffic

TDM/ATM/FR

Pseudowire (PW) emulation is a method

for transmitting TDM, ATM, Ethernet, or

other Layer 2 protocols, over an IP, MPLS

or Ethernet network. It allows a seamless

connection between two network elements

by creating logical links, or virtual tunnels,

across the packet network. The transmitted

data streams are encapsulated in packets upon

entering the network, and then reconstructed

at the pseudowire egress, where clocking

information is also regenerated. As a result, real-

time traffic is delivered transparently without

distortion, avoiding the complexities of translating

signaling data, while ensuring that synchronization

criteria are met. A service-oriented technology,

pseudowire emulation includes OAM (operations,

administration and maintenance) functionality,

known as VCCV (virtual circuit connectivity

verification), which enables diagnostic monitoring

of the pseudowire link.

Standardizing PseudowiresPseudowire’s growing popularity has

driven industry organizations to establish

a comprehensive set of standards. These

include TDMoIP®, CESoPSN and SAToP for TDM

pseudowires; VPWS and VPLS for Ethernet

pseudowires; as well as detailed pseudowire

schemes for ATM, HDLC and Frame Relay

services.

The pioneering author of various pseudowire

RFCs, recommendations and implementation

agreements, as well as a prominent member

of the IETF, ITU, MFA, and MEF, RAD has

been actively involved in the creation of the

industry’s major pseudowire standards. RAD

also devotes continuous efforts to promote

pseudowire interoperability among the vendor

community for the benefit of users and

operators alike.

While clocking data is transmitted natively in TDM networks, PSNs (packet-switched

networks) are inherently asynchronous because they were originally designed for

delivery of data traffic.

Timing over Packet

This creates a particular challenge

in ensuring that packet transport

meets “SDH/SONET or better“

performance levels, so that it

constitutes a viable carrier-class

alternative to legacy technologies.

Pseudowire emulation uses resilient

clocking and synchronization

methods to negate the effect

of impairments, such as delay

variation (jitter, wander) and packet

loss, which are intolerable in delay-

sensitive services.

In the last few years, the

solutions for synchronization

over packet have evolved from

borderline science fiction to

reliable mechanisms that are

able to handle packet transport’s

inefficiencies, capture the average

transmission rate of the original

bit stream, and distribute accurate

timing information to all network

elements.

Various TDM and ATM services

have distinct clock recovery

needs; mobile networks, in

particular, require a high degree of

synchronization to maintain proper

service quality. Pseudowire network

elements in cellular backhaul

are therefore required to comply

with stringent industry criteria as

defined in ITU-T G.823/G.824 and

G.8261, using standard methods

such as Synchronous Ethernet, NTR

and IEEE 1588v2. Such elements

need to support definite frequency

accuracy limits for various services,

such as 50 ppb for GSM and

16 ppb for 2G CDMA and 3G UMTS.

TimingWhat are Pseudowires?

PW Packets

PW Tunnel

Service Traffic

TDM/ATM/FR

Service Traffic

TDM/ATM/FR

Pseudowire (PW) emulation is a method

for transmitting TDM, ATM, Ethernet, or

other Layer 2 protocols, over an IP, MPLS

or Ethernet network. It allows a seamless

connection between two network elements

by creating logical links, or virtual tunnels,

across the packet network. The transmitted

data streams are encapsulated in packets upon

entering the network, and then reconstructed

at the pseudowire egress, where clocking

information is also regenerated. As a result, real-

time traffic is delivered transparently without

distortion, avoiding the complexities of translating

signaling data, while ensuring that synchronization

criteria are met. A service-oriented technology,

pseudowire emulation includes OAM (operations,

administration and maintenance) functionality,

known as VCCV (virtual circuit connectivity

verification), which enables diagnostic monitoring

of the pseudowire link.

Standardizing PseudowiresPseudowire’s growing popularity has

driven industry organizations to establish

a comprehensive set of standards. These

include TDMoIP®, CESoPSN and SAToP for TDM

pseudowires; VPWS and VPLS for Ethernet

pseudowires; as well as detailed pseudowire

schemes for ATM, HDLC and Frame Relay

services.

The pioneering author of various pseudowire

RFCs, recommendations and implementation

agreements, as well as a prominent member

of the IETF, ITU, MFA, and MEF, RAD has

been actively involved in the creation of the

industry’s major pseudowire standards. RAD

also devotes continuous efforts to promote

pseudowire interoperability among the vendor

community for the benefit of users and

operators alike.

While clocking data is transmitted natively in TDM networks, PSNs (packet-switched

networks) are inherently asynchronous because they were originally designed for

delivery of data traffic.

Timing over Packet

This creates a particular challenge

in ensuring that packet transport

meets “SDH/SONET or better“

performance levels, so that it

constitutes a viable carrier-class

alternative to legacy technologies.

Pseudowire emulation uses resilient

clocking and synchronization

methods to negate the effect

of impairments, such as delay

variation (jitter, wander) and packet

loss, which are intolerable in delay-

sensitive services.

In the last few years, the

solutions for synchronization

over packet have evolved from

borderline science fiction to

reliable mechanisms that are

able to handle packet transport’s

inefficiencies, capture the average

transmission rate of the original

bit stream, and distribute accurate

timing information to all network

elements.

Various TDM and ATM services

have distinct clock recovery

needs; mobile networks, in

particular, require a high degree of

synchronization to maintain proper

service quality. Pseudowire network

elements in cellular backhaul

are therefore required to comply

with stringent industry criteria as

defined in ITU-T G.823/G.824 and

G.8261, using standard methods

such as Synchronous Ethernet, NTR

and IEEE 1588v2. Such elements

need to support definite frequency

accuracy limits for various services,

such as 50 ppb for GSM and

16 ppb for 2G CDMA and 3G UMTS.

TDM Pseudowire Gateways

IPmux-1E, IPmux-14

Fast Ethernet

Analog Voice (IPmux-1E)

ISDN (IPmux-1E)

Serial Data (IPmux-14)

IPmux-24, IPmux-216

Gigabit Ethernet

Fast Ethernet

Hub-Site Pseudowire Access Gateway

Megaplex-2100, Megaplex-2104, Megaplex-4100

Fast Ethernet

SHDSL/SHDSL.bis

Analog Voice

Compressed Voice

Serial Data (n x 64 kbps)

Low Speed Data (Sub-64 kbps)

Omnibus (Teleconference)

G.703 Co-Directional

OCU-DP

Teleprotection

STM-1/OC-3

Modular Multiplexers

LA-110

Fast Ethernet

ATM UNI/IMA/CES

SHDSL/SHDSL.bis

ADSL2+

Serial Data

Frame Relay

Integrated Access Device

MiTOP-E1/T1

Fast Ethernet

SFP TDM Pseudowire Gateway

RAD’s Pseudowire Solutions Product Guide

Featured AttributesCircuit extension over IP, using any media, including fiber, copper, HFC, microwave, and satellite access

Dedicated ASICs featuring all TDM pseudowire modes

End-to-end QoS attributes and VCCV-BFD OAM capabilities to meet service-specific performance criteria and ensure SLA enforcement

VLAN-based service differentiation and transparent delivery of user traffic

Advanced clock distribution and synchronization capabilities, enabling clock precision accuracy levels of parts per billion (ppb)

RAD’s pseudowire solutions cover a diverse mix of access devices, gateways

and multiplexers – from small customer-located equipment to high-capacity

aggregation units for central offices or points-of-presence (POPs).

In addition, our multiservice, multi-generation pseudowire gateways for cellular

backhaul have won industry-wide recognition and were awarded the GSM

Association’s prestigious 2008 Global Mobile Award for “Best Network Quality

Intiative“.

ACE-3100, ACE-3200

Fast Ethernet

STM-1/OC-3 ATM

E1/T1 UNI/IMA/CES

LA-130, ACE-3105, ACE-3205

Fast Ethernet

E1/T1 UNI/IMA/CES

SHDSL/SHDSL.bis

ADSL2+

STM-1/OC-3 ATM

VDSL2 (ACE-3105 ,ACE-3205)*

RAN Cell-Site Gateways

ACE-3400, ACE-3402, ACE-3600

Gigabit Ethernet

STM-1/OC-3 ATM

Ch. STM-1/OC-3 ATM (ACE-3400, ACE-3402)

E1/T1 UNI/IMA/CES (ACE-3400)

RAN Aggregation Site Gateways

Gigabit Ethernet

Fast Ethernet

Ch. STM-1/OC-3

Ch. T3

Gmux-2000

Best of Breed

Products

*with software upgrade