Avaya Configuring ATM Services Manual de usuario Pagina 43

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ATM DXI Features and Implementation Notes
2-7
Figure 2-3 illustrates how each mode handles data transfer from the router to the
DSU/CSU.
Figure 2-3. DXI Modes of Operation
To select a mode for your router, configure the DXI Mode parameter (refer to
ATM Interface Parameter Descriptions” in Chapter 4 for details).
Access Modes for ATM DXI Services
You can enable each ATM PVC to function in one of three access modes: group
access, direct access, or hybrid access. Within the same ATM physical interface
you can configure PVCs to use different modes. The following sections describe
the access modes.
Mode 1A Mode 1B Mode 2/Mode 2 Proprietary
Mode 1A
Mode 1B
Mode 1B Mode 2 Mode 2
AAL 3/4
AAL 3/4
AAL 3/4 AAL 3/4
AAL 3/4AAL 3/4
AAL 5 AAL 5 AAL 3/4 AAL 5 AAL 3/4
DSU/CSU DSU/CSUDSU/CSU
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