As noted previously,
TDM services still remain an overwhelming contributor to Service Provider
revenues and realistically need to be supported (and delivered over a converged
Ethernet-based infrastructure). TDM-based voice applications especially need to
be accommodated and characteristics of such applications such as synchronization
and signaling need to be emulated.
?– Granularity and Quality of Services (QoS) The services supported by Carrier
Ethernet provide a wide choice and granularity of bandwidth and quality of service
options. This flexibility is vital in Service Provider networks with its multitude
of end users, each with slightly different application requirements and, typically,
operating equipment from multiple vendors. QoS capability is crucial to enforcing
the deterministic behavior of Carrier Ethernet.
?– Converged transport Supports convergence of voice, data, and video services
over a unified (Ethernet) transport and greatly simplifies the delivery, management,
and addition of such services. Basically, all enterprise services and applications
are now supported over a single Ethernet ???pipe???.
Scalability One fundamental difference between a LAN and a Service Provider network8
is scale.
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