Description
The FORE Systems STA-AMOD0257 is a high-capacity ATM network interface module designed for use in FORE Systems ATM switching platforms, most notably the ASX-4000 series. This module provides 8 independent OC-12 (STM-4) multimode optical interfaces, each supporting 622 Mbps ATM traffic.
The module was deployed in carrier-grade and enterprise ATM backbone networks, enabling high-speed optical aggregation for voice, data, and video services. STA-AMOD0257 is a slot/assembly designation, while AMOD0257-0001 is commonly referenced as the base module number in legacy inventories.
Key Features
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Manufacturer: FORE Systems
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Part Number: STA-AMOD0257
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Base Module ID: AMOD0257-0001
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Product Type: ATM optical network interface module
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Number of Ports: 8
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Interface Speed: OC-12 / STM-4 (622 Mbps per port)
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Total Aggregate Capacity: Up to 4.9 Gbps
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Fiber Type: Multimode fiber (MMF)
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Technology: Asynchronous Transfer Mode (ATM)
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Platform Compatibility: FORE Systems ASX-4000 and related ATM switch chassis
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Form Factor: Plug-in modular card
Technical Overview
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Network Function:
Provides high-speed optical ingress/egress for ATM cells between the switching fabric and external optical networks. -
ATM Support:
Fully compliant with ATM standards for OC-12 transport, supporting QoS-based traffic including voice, video, and data. -
System Integration:
Installs into designated network interface slots within FORE Systems ATM switches, interfacing directly with the internal ATM switching fabric. -
Optical Interfaces:
Multimode OC-12 ports designed for short-reach optical links in central offices, data centers, and enterprise backbone environments.
