Cisco PA-4T+= Cisco 7200/7600 Port Adapter

Brand: Cisco | Category: Accessories & Components

SKU: CSC-PA-4T | Part #: PA-4T+= | MPN: PA-4T+=

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For network engineers managing Cisco 7200 or 7600 series routers in enterprise or data centre environments, the Cisco PA-4T+ represents the standard solution for adding serial connectivity where legacy WAN links, device management interfaces, or synchronous serial protocols remain operational requirements. This port adapter installs directly into a PA slot on compatible platforms and provides four dedicated synchronous serial ports, each independently configurable to support the signaling standard your network topology demands. The PA-4T+ is genuine Cisco hardware—a distinction that matters when Cisco TAC support validation is required during network incidents or configuration changes.

The adapter's strength lies in its flexibility across multiple serial standards and WAN encapsulation protocols. Each of the four ports accepts a DB-60 connector and supports EIA/TIA-232, EIA/TIA-449, V.35, X.21, and EIA-530 signaling standards. The interface cable you select for each port determines which standard is active, allowing operators to mix different protocols across the four available ports without hardware reconfiguration. Cisco 7200 and 7600 series routers commonly sit at the core or edge of enterprise networks where Frame Relay, SMDS, HDLC, and PPP encapsulations remain in use—particularly in organisations that have not fully migrated legacy WAN services to newer technologies. The PA-4T+ handles all four encapsulation types natively, making it the go-to adapter when your network must maintain backward compatibility with older carrier circuits or internal serial-based device links.

Clocking behaviour is managed per port and depends on your role in the serial link: the adapter supports both DTE (data terminal equipment) and DCE (data communications equipment) operation, with internal clocking available when the PA-4T+ serves as the clocking source, and external clocking when it receives timing from the carrier or remote device. This bidirectional clocking model ensures the Cisco PA-4T+ can be deployed in either direction of a point-to-point serial connection. Network engineers responsible for WAN provisioning often specify this adapter when replacing aging port cards or expanding serial capacity on routers that have proven their reliability in production environments. The part number PA-4T+ appears on purchase orders, spare-parts inventories, and replacement schedules because it remains a predictable, well-documented component in mature networks.

Installation is straightforward for anyone familiar with Cisco router hardware: the PA-4T+ slides into an available PA slot, and the four DB-60 connectors are immediately available for cable connections. Because cables are sold separately and selected per port according to your signaling standard, procurement teams must plan for the correct interface cables during the ordering process—a detail that prevents installation delays. The adapter's compact form factor means it does not dominate slot space, allowing other PA modules or network modules to coexist in the same router chassis. Organisations running mixed-workload routers—handling both legacy serial WAN and modern Ethernet services—find the PA-4T+ valuable because it does not force rip-and-replace decisions; instead, it extends the useful life of existing router platforms.

Omnixon Global supplies the Cisco PA-4T+ as genuine, new hardware to data centres, network operations teams, and enterprises across the GCC, Asia, and Europe. We maintain stock of Cisco port adapters and compatible cables, and our team understands the urgency of WAN or serial connectivity repairs. If you need this adapter for immediate deployment or as part of a larger router refresh, please send an RFQ with your quantity, required delivery timeline, and destination. We work directly with regional partners and can advise on cable selection and compatible platforms to ensure your order is complete and ready for installation.

Interface & Connectivity Specifications

• Four synchronous serial ports, each with independent DB-60 connector and per-port signaling standard selection
• Supported signaling standards: EIA/TIA-232, EIA/TIA-449, V.35, X.21, EIA-530 (cable-determined per port)
• WAN encapsulation protocols: HDLC, PPP, Frame Relay, SMDS
• DTE and DCE operation modes supported with internal and external clocking options
• Compatible with Cisco 7200 series and Cisco 7600 series routers in PA slot configuration
• Genuine Cisco hardware with full TAC support eligibility
• Interface cables sold separately and selected per port to match required signaling standard