User Manual
Product information and planning
9500 MPR Rel. 3.1
3DB18809AAAA Issue 1 45/980
9500 MPR-E aggregates and carries over a COMMON PACKET LAYER: TDM 2G, 3G and IP/Ethernet.
This allows sharing of common packet transmission infrastructures, regardless of the nature of carried
traffic.
Due to the nature of Ethernet, each service can be discriminated based on several parameters like quality
of service.
Mapping different access technologies over Ethernet is achieved by standardized protocols like circuit
emulation and pseudo-wire.
[2] Service awareness
Figure 2. Service Awareness
Service awareness means the ability to discriminate the different traffic types carried over the converged
Ethernet stream. The traffic flow can be composed by E1, STM-1, ATM and/or IP/Eth, coming from
different sources, and therefore having different requirements.
For instance ATM traffic from a 3G base stations can carry voice (high priority, real time service) and data
(lower priority and possibly non real time with high variability load, such as internet browsing, music
download or video streaming).
Service awareness is what allows identifying the traffic types, and in case of the non real time variable
bit rate one, optimize the band with overbooking of the radio scarce resource.
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