What does modem (28.8k) represent?

It is an informal data transfer rate of approximately 28,800 bits per second typical for 28.8k dial-up modems over analog telephone lines.

What is STS3 (payload)?

STS3 (payload) denotes the user-data portion of a SONET STS-3 frame used in telecom networks, representing the capacity available for client traffic excluding framing overhead.

Why convert between modem (28.8k) and STS3 (payload)?

Converting between these units helps compare legacy dial-up speeds to modern high-capacity SONET backbone links for planning and analysis.

Convert Modem (28.8k) to STS3 (payload) Data Transfer Units

Easily convert data transfer rates from modem (28.8k) speed to STS3 (payload) capacity with our online unit converter. Understand legacy and modern telecom data rates.

Modem (28.8k)

STS3 (payload)

Please check your input. It must be a valid numeric value.

Modem (28.8k) to STS3 (payload) Conversion Table

Modem (28.8k)	STS3 (payload)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Modem (28.8k) to STS3 (payload) Conversion Table
Modem (28.8k)	STS3 (payload)

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What Is This Tool?

This tool enables users to convert data transfer speeds from the informal modem (28.8k) rate to the STS3 (payload) capacity. It helps bridge the understanding between dial-up modem throughput and modern SONET backbone payloads commonly used in telecommunications.

How to Use This Tool?

Enter the value in modem (28.8k) data transfer rate you want to convert.
Select modem (28.8k) as the input unit and STS3 (payload) as the output unit.
Click the convert button to obtain the equivalent STS3 (payload) value.
Interpret the results to compare legacy dial-up and modern SONET backbone capacities.

Key Features

Converts from modem (28.8k) units, representing 28,800 bit/s dial-up speeds.
Converts to STS3 (payload) units reflecting user-data capacity in SONET STS-3 frames.
Provides straightforward multiplication-based conversion using a fixed rate.
Supports telecom and network engineering applications involving legacy and modern data rates.
Browser-based and easy to use with no installation required.

Examples

Converting 10 modem (28.8k) units results in 0.001915709 STS3 (payload).
Converting 100 modem (28.8k) units results in 0.01915709 STS3 (payload).

Common Use Cases

Estimating and comparing legacy dial-up connection speeds to high-capacity SONET links.
Capacity planning and provisioning for telecom carrier backbone circuits (OC-3).
Analyzing throughput for billing and SLA measurements involving payload channels.
Relating small-scale modem throughput to large-scale optical transport traffic.

Tips & Best Practices

Use this conversion to understand relative scales between dial-up and SONET payload data rates.
Remember the modem rate is approximate and can vary based on line conditions and overhead.
Consider that STS3 (payload) reflects user data only, excluding protocol framing overhead.
Apply conversions carefully when performing network capacity planning or performance comparisons.

Limitations

Modem (28.8k) speed is informal and influenced by line quality and protocol overhead.
STS3 (payload) excludes SONET framing bytes, so throughput comparisons are approximate only.
This tool does not account for varying conditions affecting actual modem or SONET performance.

Frequently Asked Questions

What does modem (28.8k) represent?: It is an informal data transfer rate of approximately 28,800 bits per second typical for 28.8k dial-up modems over analog telephone lines.
What is STS3 (payload)?: STS3 (payload) denotes the user-data portion of a SONET STS-3 frame used in telecom networks, representing the capacity available for client traffic excluding framing overhead.
Why convert between modem (28.8k) and STS3 (payload)?: Converting between these units helps compare legacy dial-up speeds to modern high-capacity SONET backbone links for planning and analysis.

Key Terminology

Modem (28.8k): An informal measurement of data transfer rate at approximately 28,800 bits per second from classic dial-up modems over analog lines.
STS3 (payload): The data portion of an OC-3 SONET frame representing the user traffic capacity excluding framing overhead in synchronous optical transport.
SONET: Synchronous Optical Network, a standard for telecommunications transport that uses optical fiber and frames like STS-3.

Quick Knowledge Check

What does 1 modem (28.8k) equal in STS3 (payload)?

0.001915709 STS3 (payload)

0.0001915709 STS3 (payload)

0.01915709 STS3 (payload)

Which unit excludes SONET framing bytes?

Modem (28.8k)

STS3 (payload)

Both units

What is a common use case for converting from modem (28.8k) to STS3 (payload)?

Estimating download time on dial-up

Network capacity planning for telecom backbones

Measuring email size limits

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