What Is This Tool?
This tool converts data transfer rates from STS3 (payload), referring to the user-data capacity within a SONET OC-3 frame, into the modem (2400) unit which describes early dial-up modem speeds of 2400 bits per second.
How to Use This Tool?
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Enter the value in STS3 (payload) units representing the user-data portion of an OC-3 frame.
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Select the target unit as modem (2400), indicating early dial-up modem transfer speed.
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Execute the conversion to obtain the equivalent rate in modem (2400) units.
Key Features
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Converts STS3 (payload) data rates to modem (2400) units using an established conversion factor.
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Provides examples illustrating conversions between high-capacity SONET payloads and legacy modem speeds.
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Supports telecom, retro-computing, and legacy network usage by translating modern payload rates into historic modem speeds.
Examples
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2 STS3 (payload) equals 125280 modem (2400) units by multiplying 2 by 62640.
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0.5 STS3 (payload) equals 31320 modem (2400) units by multiplying 0.5 by 62640.
Common Use Cases
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Planning and provisioning OC-3 carrier backbone links using STS3 payload measurements.
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Translating SONET transport payload capacities into historic modem speeds for legacy system interfacing.
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Performing billing and SLA monitoring for leased-line transport services with payload-based allocations.
Tips & Best Practices
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Use this conversion primarily for conceptual understanding or legacy system compatibility.
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Verify the context of payload overhead when interpreting STS3 (payload) values.
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Apply the conversion when working with retro-computing or testing legacy modem equipment.
Limitations
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Modem (2400) is a non-SI unit describing outdated modem speeds, not suitable for modern networks.
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STS3 (payload) subtracts variable overhead bytes, so exact payload capacity may differ.
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This conversion mainly serves conceptual or historic comparison rather than practical contemporary use.
Frequently Asked Questions
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What does STS3 (payload) represent?
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STS3 (payload) denotes the user-data portion of an OC-3 SONET frame after removing framing and overhead bytes.
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What is modem (2400)?
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Modem (2400) describes an early dial-up modem data rate of 2400 bits per second, reflecting historic modem speed classifications.
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Why convert between STS3 (payload) and modem (2400)?
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Conversion helps relate high-capacity SONET payloads to legacy modem speeds for compatibility, retro-computing, or understanding historical bandwidth scales.
Key Terminology
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STS3 (payload)
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The user-data portion within an OC-3 SONET signal, excluding overhead and framing bytes.
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Modem (2400)
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An early dial-up modem speed class denoting a data transfer rate of 2400 bits per second.
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SONET
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Synchronous Optical Network, a standard for optical telecommunications transport.