Cisco PA-T3 1-Port T3 Serial Port Adapter Module

The Cisco PA-T3 is a 1-port T3 serial adapter with 45Mbps speed and built-in DSU, designed for Cisco enterprise routers and WAN networks.

Availability: Available on backorder SKU: PA-T3 Categories: Uncategorized, Used Cisco Products

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Description

Description

The Cisco PA-T3 is a high-speed serial port adapter. It is designed for Cisco 7000 and 7200 series routers and related platforms.

This module provides 1 × T3 (DS3) serial interface. It supports data transmission at speeds up to 45 Mbps, making it suitable for legacy WAN and carrier connections.

The PA-T3 includes an integrated Data Service Unit (DSU). This allows direct connection to T3 lines without requiring external equipment.

It supports multiple WAN protocols such as:

Frame Relay
PPP (Point-to-Point Protocol)
HDLC
SMDS

The module uses full-duplex synchronous communication. It supports 16-bit and 32-bit CRC for error detection and improved data integrity.

Connectivity is provided through 75-ohm coaxial cables (BNC connectors). These are standard for DS3/T3 telecom links.

The PA-T3 is commonly used in service provider networks, enterprise WAN backbones, and telecom environments that require high-speed serial connectivity.

Key Features:

1 × T3 (DS3) serial port (up to 45 Mbps)
Integrated DSU (no external unit required)
Full-duplex synchronous serial interface
Supports PPP, HDLC, Frame Relay, SMDS
16-bit and 32-bit CRC support
Compatible with Cisco 7000 / 7200 / 7500 series

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Cisco PA-T3 1-Port T3 Serial Port Adapter Module