Cisco PA-A3-E3= Network Card Computer Component

The enhanced asynchronous transfer mode (ATM) port adapters (ATM PA-A3) are single-port, single and dual-wide ATM port adapters for the Cisco® 7200, 7500, and 7600 OSR series routers using the FlexWAN module for the Cisco Catalyst© 6000 family of switches. The ATM PA-A3 is designed with a high-performance, dual segmentation and reassembly (SAR) architecture with local buffer memory.

MAIN FEATURE SUMMARY
The ATM PA-A3 combines high performance and a wide array of new ATM features that are ideal for both enterprise wide-area network (WAN) and service provider backbone applications:
-IETF RFC 2684 (updated RFC 1483) support for multiple protocol encapsulations over ATM.
-IETF RFC 2364 and 2516 for PPP over ATM.
-IETF RFC 1577 support for classical IP and ARP over ATM.
-1024 concurrent SARs.
-ATM service classes: UBR, UBR+, VBR-nrt, ABR (not on OC-12/STM-4 interface).
-ATM Forum UNI 3.0, 3.1, and 4.0.
-Supports AAL5 ATM adaptation layer for data services.
-Supports AAL2 ATM adaptation layer for voice services (Cisco 7200 with OC-3/STM-1, DS3 and E3 interfaces only).
-Up to 4096 simultaneous virtual circuits (VCs).
-Layer 2 per-VC and per-VP queuing and traffic shaping.
-ATM PVCs and SVCs.
-LANE 2.0 client and server.
-F4 and F5 Operations and Maintenance (OAM) cell support.
-MPOA client and server.
-MPLS, MPLS Traffic Engineering, MPLS-VPN, MPLS-COS.
-Interim Local Management Interface (ILMI).