Lucent Technologies CBX 3500 - ATM Optimum Frame Trunk

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4-4 ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring ATM Logical Ports on Frame-based Modules
About ATM Logical Ports
ATM OPTimum Frame Trunk
An ATM OPTimum logical port enables you to use public ATM networks as trunk
lines between two Lucent switches. You can configure an ATM OPTimum frame trunk
logical port to:
• Connect to a peer Lucent switch over an ATM PVC.
• Connect to a peer Lucent switch over an ATM PVC, using an ATM data service
unit (DSU).
• Multiplex Frame Relay PVCs and Switched Multimegabit Data Service (SMDS)
“connections” over the ATM PVC.
You can configure an ATM OPTimum frame trunk to create a switch-to-switch Lucent
trunk through a PDN into another Lucent network. The Lucent OPTimum trunk
allows private enterprises to purchase low-cost, public-carrier services as the trunk
between two Lucent switches, rather than use a more expensive leased-line service.
You use this logical port type to:
• Optimize performance and throughput in situations where both ends are
connected by Lucent switches.
• Enable the logical port to communicate with a Lucent switch peer over an ATM
PVC.
• Multiplex multiple Frame Relay PVCs and SMDS “connections” over the ATM
PVC.
Network Interworking for Frame Relay NNI
The Network Interworking for Frame Relay Network-to-Network Interface (FR NNI)
logical port type provides the following access:
• Enables an ATM broadband circuit to interconnect two Frame Relay networks.
• Enables the logical port to communicate with a peer Frame Relay switch over an
ATM PVC.
• Multiplexes multiple Frame Relay PVC segments over the ATM PVC.
• Supports many-to-one connection multiplexing.
• Facilitates inter-Local Access and Transport Area (LATA) FR NNI connections.
• Supports Frame Relay/ATM PVC Network Interworking Implementation
Agreement FRF.5.