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Data Sheet
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Cisco 1- and 2-Port Enhanced Capability Clear Channel
Port Adapters
Port Adapters
Cisco
®
1- and 2-Port Enhanced Capability Clear Channel Port Adapters provide a “two-in-
one” portfolio that provides both T3 and E3 trunking capabilities.
Product Overview
The Cisco 1- and 2-Port Enhanced Capability Clear Channel Port Adapters for the Cisco 7200
Series Routers (Cisco 7201 and 7301 Routers) are enhanced two-in-one versions (part numbers
PA-T3/E3-EC and PA-2T3/E3-EC) of the earlier Clear Channel T3 and E3 port adapters (part
numbers PA- T3+, PA-2T3+, PA-E3, and PA-2E3). These new products assist network
implementers by minimizing sparing of both T3 port adapters for the United States and E3 for
European and Asian implementations. They provide a new software architecture that allows
selecting either T3 or E3 by way of software configuration coupled with a more powerful chipset
that lowers CPU usage. The new port adapters lower CPU usage by more than 15 percent
(Figure 1).
These new port adapters can perform at line-rate performance with lower CPU usage on the Cisco
7200 Series and Cisco 7201 and Cisco 7301 platforms while providing scalable trunking services.
Table 1 lists the router platforms and Cisco IOS
®
Software releases that support these features.
Table 1.
Features Table
Feature
Supporting Platform
Cisco IOS Software Release
Line-rate performance: Up to
34.368 Mbps per E3 port
34.368 Mbps per E3 port
Cisco 7204VXR and 7206VXR NPE-400, NPE-
G1, and NPE-G2 Network Processing Engines,
Cisco 7201, and Cisco 7301
G1, and NPE-G2 Network Processing Engines,
Cisco 7201, and Cisco 7301
12.4(15)T1
Line-rate performance: Up to
44.736 Mbps per T3 port
44.736 Mbps per T3 port
Cisco 7204VXR, Cisco 7206VXR, Cisco 7201,
and Cisco 7301
and Cisco 7301
12.4(15)T1
Lower CPU usage
Cisco 7204VXR, Cisco 7206VXR, Cisco 7201,
and Cisco 7301
and Cisco 7301
12.4(15)T1
Figure 1. Cisco 1- and 2-Port Enhanced Capability Clear Channel Port Adapters