During this transitional time, wireline providers need to provide solutions
for wholesale Carrier Ethernet and DS1 leased-line services. EoS solutions offer the
unique ability to deliver both services cost-effectively. Wireline carriers may leverage
the Carrier Ethernet and traditional TDM capabilities of EoS solutions to provide both
cell site access (where fiber is available) and interoffice transport services for their
wireless provider customers.
Service providers may realize the additional EoS benefit of low Ethernet service
delivery costs, especially in deployment scenarios where three conditions hold: First,
SONET/MSPP 313
the Ethernet service should require the key Carrier Ethernet attributes of standardized
services, reliability, and QoS, and should not require the transport equipment to
support a high degree of Ethernet switching (as in the previous wireless network example).
Second, EoS solutions generally prove cost-effective when the service demand
comprises a mixture of Carrier Ethernet and traditional TDM services (also in the
wireless network example). Third, deployment costs are minimized when a SONET
network, especially one featuring MSPPs, already exists.
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