November 19, 2019

Cisco PA-2T3 Network Card and Serial PortAdapters1 PortAdapters Description

Cisco PA-2T3 Network Card and Serial PortAdapters1 PortAdapters Description - page 1

 PA-T3 and PA-2T3 Serial Port Adapters 1

PA-T3 and PA-2T3 Serial 

Port Adapters

Description

The PA-T3 and PA-2T3 serial port adapters are available on Cisco 7200 series routers, on 

second-generation Versatile Interface Processor (VIP2) in all Cisco 7500 series routers, and on Cisco 

7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis 

Interface (RSP7000CI). These port adapters provide one (PA-T3) or two (PA-2T3) high-speed 

full-duplex synchronous serial T3 interfaces and integrated data service unit (DSU) functionality. 

The T3 port adapters can transmit and receive data at T3 rates of up to 45 Mbps and use a 75-ohm 

coaxial cable available from Cisco to connect to a serial T3 network. These port adapters support the 

following features:

16- and 32-bit cyclic redundancy checks (CRC)

High-speed HDLC data

C-bit, M13, and bypass framing

HDB3 line coding

ATM-DXI, Frame Relay, HDLC, PPP, and SMDS serial encapsulation

DS3 MIB (RFC 1407)

Scrambling and reduced bandwidth

Remote and local loopbacks

Note

For additional information on interoperability guidelines for T3 serial port adapter DSUs, 

refer to the PA-T3 Serial Port Adapter Installation and Configuration publication.

Platforms

This feature is supported on these platforms:

Cisco 7200 series

Cisco 7500 series

Cisco 7000 series routers with the RSP7000 and RSP7000CI




 PA-T3 and PA-2T3 Serial Port Adapters 1 PA-T3 and PA-2T3 Serial  Port Adapters Description The PA-T3 and PA-2T3 serial port adapters are available on Cisco 7200 series routers, on  second-generation Versatile Interface Processor (VIP2) in all Cisco 7500 series routers, and on Cisco  7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis  Interface (RSP7000CI). These port adapters provide one (PA-T3) or two (PA-2T3) high-speed  full-duplex synchronous serial T3 interfaces and integrated data service unit (DSU) functionality.  The T3 port adapters can transmit and receive data at T3 rates of up to 45 Mbps and use a 75-ohm  coaxial cable available from Cisco to connect to a serial T3 network. These

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