Cisco SPA-4XT3/E3 Cisco Shared Port Adapter (SPA)
Brand: Cisco | Category: Accessories & Components
SKU: CSC-SPA-4XT3E3 | Part #: SPA-4XT3/E3 | MPN: SPA-4XT3/E3
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About the Cisco SPA-4XT3/E3 Cisco Shared Port Adapter (SPA)
The Cisco SPA-4XT3/E3 is a hot-swappable Shared Port Adapter module designed for seamless installation into compatible Cisco routing platforms without service interruption. This four-port SPA delivers enterprise-grade WAN connectivity by supporting both T3 (DS3) and E3 line rates, making it essential for network engineers managing high-capacity telecom infrastructure across multiple geographies.
The SPA-4XT3/E3 (part number SPA-4XT3/E3) provides flexible channelization options in both clear-channel and channelized modes, with support for industry-standard encapsulation protocols including PPP, HDLC, and Frame Relay. Cisco engineered this adapter to work across the ASR 1000 Series and 7600 Series platforms via compatible SPA Interface Processors, offering organizations a cost-effective upgrade path for legacy and modern routing environments. Network architects and IT procurement teams value the module's configurable clock sources—internal, line, and loop-timed—which ensure reliable synchronization in complex WAN deployments. The BNC connector interface supports standard 75-ohm coaxial cabling, simplifying integration with existing telecom infrastructure. Online insertion and removal capability allows administrators to upgrade or replace the adapter during peak operations, minimizing downtime in mission-critical networks.
Key Specifications
- Part Number: SPA-4XT3/E3
- Number of Ports: 4 (T3/E3 dual-mode)
- T3 Line Rate: 44.736 Mbps per port
- E3 Line Rate: 34.368 Mbps per port
- Connector Type: BNC (75-ohm coaxial)
- Compatible Platforms: Cisco ASR 1000 Series, Cisco 7600 Series
- Encapsulation Protocols: PPP, HDLC, Frame Relay
- Online Insertion and Removal: Supported
For pricing, availability, and technical specifications tailored to your network requirements, contact Omnixon Global to request a formal quote.
Technical Specifications
| Brand | Cisco |
| Category | Accessories & Components |
| SKU | CSC-SPA-4XT3E3 |
| Part Number | SPA-4XT3/E3 |
| Condition | New |
| Interface | T3/E3 |
| Manufacturer Part Number | SPA-4XT3/E3 |
| Product Type | Shared Port Adapter (SPA) |
| Number of Ports | 4 |
| Port Type | T3 (DS3) / E3 |
| T3 Line Rate | 44.736 Mbps per port |
| E3 Line Rate | 34.368 Mbps per port |
| Connector Type | BNC |
| Framing — T3 | C-bit Parity, M13 |
| Framing — E3 | G.832, G.751 |
| Channelization | Channelized and clear-channel modes supported |
| Encapsulation | PPP, HDLC, Frame Relay |
| Online Insertion and Removal (OIR) | Supported |
| Compatible SPA Interface Processors | SIP-400, SIP-600 (ASR 1000); SIP-200 (7600 Series) |
| Compatible Platforms | Cisco ASR 1000 Series, Cisco 7600 Series |
| Clock Source | Internal, line, and loop-timed modes configurable |
| Cable Type | 75-ohm coaxial (BNC) |
| Form Factor | SPA module |
Frequently Asked Questions about Cisco SPA-4XT3/E3 Cisco Shared Port Adapter (SPA)
What does the Cisco SPA-4XT3/E3 Cisco Shared Port Adapter (SPA) do?
The Cisco SPA-4XT3/E3 Cisco Shared Port Adapter (SPA) is enterprise IT hardware deployed in production data centers, server rooms, and edge sites across the GCC and EMEA region.