Cisco SPA-DSP ASR1000 Series Digital Signal Processor SPA

A high‑performance, carrier‑grade DSP module engineered for voice, transcoding, and media‑processing services across Cisco’s modular routing platforms. The Cisco SPA‑DSP delivers exceptional density, low latency, and hardware‑accelerated media handling—ideal for enterprise voice gateways, SBC functions, and service‑provider edge deployments.

This unit has been professionally tested, fully inspected, and is ready for immediate installation.

Key Features

• High‑density DSP resources
  Supports voice transcoding, transrating, conferencing, and DTMF services
• Hardware‑accelerated media processing
  Offloads CPU‑intensive voice tasks from the router
• AMR‑WB, G.711, G.729, iLBC, T.38, and more
  Broad codec support for modern and legacy voice environments
• Ideal for SIP, H.323, MGCP, and SBC deployments
• Hot‑swappable SPA form factor
  Enables service continuity and easy field replacement
• Carrier‑grade reliability
  Designed for 24/7 operation in demanding enterprise and SP networks

Compatible Cisco Platforms

Search results confirm that the SPA‑DSP is supported on the Cisco ASR 1000 Series Aggregation Services Routers, when installed into a compatible SPA Interface Processor (SIP).
Sources: Cisco DSP SPA Overview, Insight product listing.

Supported Routers

• Cisco ASR 1001
• Cisco ASR 1002
• Cisco ASR 1002‑F
• Cisco ASR 1004
• Cisco ASR 1006
• Cisco ASR 1013

Supported SPA Interface Processors (SIPs)

The SPA‑DSP requires installation into one of the following SIPs, as documented in Cisco’s SIP summary:

• ASR‑1000‑SIP10 – 10‑Gbps SPA Interface Processor
• ASR‑1000‑SIP40 – 40‑Gbps SPA Interface Processor

These SIPs provide the physical SPA slots and backplane bandwidth required for the DSP module.

Supported Line Cards / Chassis Notes

• The SPA‑DSP is not used in switches; it is strictly for ASR 1000 routers.
• It is compatible with any ASR 1000 chassis that supports SIP10 or SIP40 modules.
• It is not supported on ASR 9000, ISR 4000, Catalyst switches, or Nexus platforms.

What’s Included

• Cisco SPA‑DSP Digital Signal Processor Shared Port Adapter
• Anti‑static protective packaging
• Fully tested and verified hardware