• Cisco PA-8T-X21 black silver circuit board with 8 X.21 ports
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Cisco

Cisco PA-8T-X21 | 8x X.21 sync serial, up to 2.048 Mbps/port, PPP/HDLC/Frame Relay; for 7200/7500

PA-8T-X21

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Description

High-density 8-port X.21 synchronous serial adapter for Cisco 7200/7500 edge routers, ideal for leased-line and low-speed WAN aggregation. Supports PPP/HDLC/Frame Relay with per-port clocking control.

Features

Eight independent X.21 sync serial ports for dense WAN termination - Flexible per-port clocking and encapsulation - Optimized for leased-line, private WAN, and Frame Relay deployments - Low-power, high-density interface card for branch or POP aggregation

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

Technical Specifications

Interfaces: 8x X.21 synchronous serial (DTE) - Port speed: up to 2.048 Mbps per port - Connector: X.21 15-pin (via octal breakout cable) - Encapsulations: PPP, HDLC, Frame Relay - Clocking: internal or external per interface - Supported platforms: Cisco 7200, 7500 (via VIP) - Cable options: CAB-OCTAL-X21 or equivalent

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