Cisco SPA-4XCT3/DS0 Cisco Shared Port Adapter (SPA)
Brand: Cisco | Category: Accessories & Components
SKU: CSC-SPA-4XCT3DS0 | Part #: SPA-4XCT3/DS0 | MPN: SPA-4XCT3/DS0
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About the Cisco SPA-4XCT3/DS0 Cisco Shared Port Adapter (SPA)
The Cisco SPA-4XCT3/DS0 Shared Port Adapter expands port density and channelized connectivity on supported platforms, delivering 4 ports of Channelized T3 (CT3) interface capability with full DS0 visibility across 2,688 total DS0 channels. Operating at a T3 line rate of 44.736 Mbps per port, this adapter provides enterprise-grade WAN aggregation and multi-protocol support, enabling service providers and large enterprises to consolidate legacy circuit-switched networks onto modern packet-based infrastructure without sacrificing granular channel management.
Network engineers and infrastructure teams deploying Cisco 7600 Series or Cisco ASR 1000 Series routers rely on the SPA-4XCT3/DS0 to bridge fragmented T3 connectivity into unified platforms. The adapter supports 28 DS1 channels and 672 DS0 channels per T3 port, with flexible encapsulation options including PPP, HDLC, and Frame Relay applied per channel group. Framing modes accommodate both C-bit Parity and M13 on T3 links, while T1 interfaces support ESF and SF modes with B3ZS, AMI, and B8ZS line coding. Clock synchronization options—Internal, Line, and Through—ensure flexible deployment in diverse network topologies. The SPA form factor integrates seamlessly into SIP-slot compatible chassis, and hot-swap capability via Online Insertion and Removal (OIR) minimizes service interruption during hardware maintenance or upgrades.
Omnixon Global stocks the SPA-4XCT3/DS0 (Cisco manufacturer part number SPA-4XCT3/DS0) as a trusted supplier of Cisco networking and edge routing components across the Middle East region. Whether you are consolidating legacy T3 circuits, expanding DS0 capacity, or qualifying hardware for a Cisco ASR 1000 deployment, our team is ready to assist with competitive pricing, inventory confirmation, and technical support. Submit your request for quotation to Omnixon Global today.
Technical Specifications
| Brand | Cisco |
| Category | Accessories & Components |
| SKU | CSC-SPA-4XCT3DS0 |
| Part Number | SPA-4XCT3/DS0 |
| Condition | New |
| Interface | CT3/DS0 |
| Manufacturer Part Number | SPA-4XCT3/DS0 |
| Product Type | Shared Port Adapter (SPA) |
| Number of Ports | 4 |
| Interface Type | Channelized T3 (CT3) with DS0 visibility |
| T3 Line Rate | 44.736 Mbps per port |
| DS1 Channels per T3 Port | 28 |
| DS0 Channels per T3 Port | 672 |
| Total DS0 Channels (all ports) | 2,688 |
| Supported Encapsulations | PPP, HDLC, Frame Relay (per channel group) |
| T3 Framing Modes | C-bit Parity, M13 |
| T1 Framing Modes | ESF (Extended Superframe), SF (D4 Superframe) |
| Line Coding | B3ZS (T3), AMI / B8ZS (T1) |
| Clock Source Options | Internal, Line, Through |
| Physical Connector | BNC (T3) |
| Form Factor | Shared Port Adapter (SPA) — SIP-slot compatible |
| Compatible Platforms | Cisco 7600 Series, Cisco ASR 1000 Series (SIP-based slots) |
| Software Requirement | Cisco IOS with appropriate channelized T3 feature support |
| Hot-Swap Support | Yes (OIR — Online Insertion and Removal) |
Frequently Asked Questions about Cisco SPA-4XCT3/DS0 Cisco Shared Port Adapter (SPA)
What does the Cisco SPA-4XCT3/DS0 Cisco Shared Port Adapter (SPA) do?
The Cisco SPA-4XCT3/DS0 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.