Name: 4-port OC-3/STM-1 SONET/SDH OSM, Single mode, Intermediate Reach, with 4 GE
Brand: Cisco
Price: 330.95 USD
Availability: InStock

Cisco OSM-4OC3-POS-SI 4-port OC-3/STM-1 SONET/SDH OSM, Single mode, Intermediate Reach, with 4 GE

The Cisco OSM-4OC3-POS-SI is a compact, high-performance optical service module that delivers four OC-3/STM-1 SONET/SDH ports on a single chassis. Designed for single mode fiber with intermediate reach, this module provides a reliable bridge between ... Read More

price

$330.95

In Stock: 4
Manufacturer: Cisco
Model or Part: OSM-4OC3-POS-SI
Condition: Refurbished
Weight: 18.00lb

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Item Condition

New - Sealed or Open Box Condition
Excellent - Almost-New, Missing Original Packaging
Refurbished - Seller Refurbished, Good Condition, Previously Used Item

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Description

Overview
The Cisco OSM-4OC3-POS-SI is a compact, high-performance optical service module that delivers four OC-3/STM-1 SONET/SDH ports on a single chassis. Designed for single mode fiber with intermediate reach, this module provides a reliable bridge between legacy SONET/SDH networks and modern Gigabit Ethernet (GE) infrastructure. It is ideal for service providers and enterprises that need to extend or upgrade existing optical transport while maintaining compatibility with legacy equipment.

Key Features

Four OC-3/STM-1 ports on a single module for dense port density
Integrated 4 Gigabit Ethernet interfaces for seamless Ethernet transport
Single mode fiber support with intermediate reach (up to 10 km typical)
Hot-swap capable for zero-downtime maintenance
Built-in diagnostics and performance monitoring
Compact form factor that fits standard Cisco chassis

Technical Specifications

Model/Part Number: OSM-4OC3-POS-SI
Port Type: 4 x OC-3/STM-1 SONET/SDH
Ethernet: 4 x 1 Gigabit Ethernet (RJ-45)
Fiber Type: Single mode
Reach: Intermediate (up to 10 km, depends on fiber loss and attenuation)
Data Rate: 155.52 Mbps per OC-3/STM-1 port
Power Consumption: Approx 12 W (typical)
Operating Temperature: 0 deg to 45 deg C
Dimensions: Standard Cisco module size, fits 19 inch rack

Applications

Metro Ethernet aggregation where legacy SONET/SDH traffic must be carried over modern Ethernet backbones
Enterprise campus networks that require high-speed optical links between buildings
Service provider edge routers needing to interconnect with existing SONET/SDH rings
Data center interconnects that combine optical transport with Ethernet connectivity
Disaster recovery sites where reliable, low-latency optical links are critical

By integrating SONET/SDH and Gigabit Ethernet on a single, hot-swapable module, the Cisco OSM-4OC3-POS-SI simplifies network design, reduces equipment count, and provides a cost-effective path for gradual migration to all-IP networks while preserving investment in existing optical infrastructure.