SPA‑1XCHSTM1/OC3 Specifications
Cisco 1‑Port Channelized STM‑1/OC‑3 Shared Port Adapter
Manufacturer: Cisco
Manufacturer Model: SPA‑1XCHSTM1/OC3
Product Line: Cisco Shared Port Adapters (SPA)
Product Series: 1‑Port Channelized STM‑1 / OC‑3 to DS‑0
Product Type: Interface / Port Adapter Module
Product Name: Cisco 1‑Port Channelized STM‑1/OC‑3 SPA Module
KEY FEATURES:
Port Count: 1 × OC‑3c / STM‑1 port
Channelization Support: Converts STM‑1/OC‑3c to DS‑0 channels, supports clear channel T3/E3, sub‑rate T3/E3, full‑rate T1, channelized T1/E1.
Interface Type: SFP optics for OC‑3/STM‑1 line (supports channelized TDM and packet services)
Hot‑Swap Support: Yes (plug‑in module)
High‐Density: Supports up to ~84 T1 (or 3 T3) or 63 E1 (or 3 E3) ports via channelization on this single module.
PERFORMANCE:
Data Rates: Up to ~155.52 Mb/s (STM‑1/OC‑3) on the main port; channelized down to DS‑0s per service.
Typical Power Consumption: ~7.7 W maximum for the 2‑port variant; ~8.4 W for 4‑port variant (this model is the 1‑port variant).
Modulation/Framing: Supports SONET/SDH, BERT pattern generation/detection, remote loopback, sub‑rate, etc.
ENVIRONMENTAL & RELIABILITY:
Operating Temperature: 5 °C to 40 °C (41 °F to 104 °F)
Storage Temperature: ‑40 °C to 70 °C (‑40 °F to 158 °F)
Operating Humidity: 5% to 85% RH
Storage Humidity: Up to 95% RH
Designed for enterprise and service‑provider edge/backbone access with carrier‑grade reliability and modular flexibility.
PHYSICAL:
Form Factor: Plug‑in SPA module for compatible Cisco router interface slots (e.g., ASR 9000, 7600, ASR 1000 with appropriate SIP)
Typical Dimensions: Height ~0.8 in (2.03 cm), Width ~6.75 in (17.15 cm), Depth ~7.28 in (18.49 cm)
Weight: ~0.75 lb (~0.34 kg)
COMPATIBILITY & NOTES:
Compatible Devices: Cisco 7600 Series, Cisco ASR 1000 Series, Cisco ASR 9000 Series (and other platforms supporting the SPA/I‑Flex architecture)
Firmware & Software: Requires compatible software version on the router (e.g., Cisco IOS/IOS‑XE or IOS‑XR as relevant)
Cable & Optics: Requires SFP optics compatible with OC‑3/STM‑1 and matching fiber/line connectivity
Use Case: Best suited for high‑density TDM aggregation of legacy T1/E1 circuits over SONET/SDH infrastructure via channelized OC‑3/STM‑1
Because this is often found in refurbished condition: verify module condition, ensure firmware compatibility, check slot support in your chassis and that any required optics are present.
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