Service providers are investing heavily in IP infrastructures,
spurred by the explosive growth and ubiquity of the Internet and
the exponential growth in demand for IP access. Most providers
now regard their IP networks as their most strategic asset, yet
must balance ongoing investment against the need to maintain profitability.
Based on the performance and scalability of today's
Gigabit and Terabit Switch Routers (GSR/TSR), IP and
MPLS network cores now out-pace other technologies. Deployment
of IP/MPLS is even becoming the infrastructure of choice
for transporting ATM traffic in the core. In addition,
Differentiated Services (DiffServ) prioritization, together
with MPLS, provide the QoS and the reliability for delivering
any service over an IP network. Finally, such networks
are also less costly and simpler than ATM.
Meanwhile, such legacy services as Leased Lines (LL),
Frame Relay (FR), Asynchronous Transfer Mode (ATM), and
Circuit Switched Voice (CSV) dominate service provider
revenues and are, in fact, still growing. Most business
users continue to rely on these mission-critical legacy
services.
Service providers need to enable a wide-ranging combination
of services, a greater degree of efficiency in existing
networks, and a smooth migration strategy to a single
converged network based on IP and MPLS, without stranding
any revenue streams from legacy services.
Pseudo-Wires enable circuit emulation and service emulation
over packet-based networks and provide a full-service
alternative to TDM access. With Pseudo-Wire solutions,
all types of telecommunications providers, including
mobile wireless operators, cable MSOs, competitive service
providers, and incumbent carriers, can offer customers
a full portfolio of voice and data services that are
efficiently transported across high-speed, low-cost Ethernet,
IP, and MPLS networks.
This paper looks at the changes occurring in the telecommunications
services marketplace and the need for Pseudo-Wire solutions.
 To
access the full white paper, click here: "Pseudo-Wires:
The Full-Service Alternative to TDM Access"
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