What does STS3 (payload) represent?

STS3 (payload) represents the user-data portion within a SONET STS-3 frame, reflecting the bytes available for client traffic after excluding overhead.

Is the conversion rate between STS3 (payload) and STS3c (payload) always 1:1?

Yes, this converter uses a direct equivalence where 1 STS3 (payload) equals 1 STS3c (payload).

Where is STS3c (payload) commonly used?

STS3c (payload) is used in optical transport networks to carry high-bandwidth client signals across contiguous SONET payload channels.

How to Convert from STS3 (payload) to STS3c (payload)?

Learn how to convert data transfer units from STS3 (payload) to STS3c (payload) with this easy-to-use online conversion tool, ideal for telecom and optical network planning.

STS3 (payload)

STS3c (payload)

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

STS3 (payload) to STS3c (payload) Conversion Table

STS3 (payload)	STS3c (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.

STS3 (payload) to STS3c (payload) Conversion Table
STS3 (payload)	STS3c (payload)

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What Is This Tool?

This converter helps translate data transfer values between STS3 (payload) and STS3c (payload), which are payload portions of SONET OC-3 signals used in telecom and optical transport networks.

How to Use This Tool?

Enter the value in STS3 (payload) you want to convert
Select the target unit as STS3c (payload)
Click Convert to get the equivalent STS3c (payload) value

Key Features

Converts directly between STS3 (payload) and STS3c (payload) units
Browser-based and simple to use for quick conversions
Supports telecom and optical network data measurements
Handles payload values reflecting usable capacity after SONET overhead

Examples

Converting 5 STS3 (payload) results in 5 STS3c (payload)
Converting 0.75 STS3 (payload) yields 0.75 STS3c (payload)

Common Use Cases

Planning and provisioning carrier backbone links such as OC-3 circuits in telecom networks
Carrying encapsulated Ethernet, ATM, or TDM traffic over SONET transport
Measuring and billing leased-line or transport services with allocated payload channels
Managing high-bandwidth client signal transport over optical networks
Assessing leased-line services requiring approximately 155 Mbps circuits

Tips & Best Practices

Confirm the unit type before converting to avoid errors in telecom planning
Use the tool to align capacity planning with actual payload bandwidth requirements
Consider SONET overhead bytes in detailed bandwidth calculations beyond this conversion

Limitations

Both units show payload after SONET framing and overhead bytes are removed
Usable bandwidth may differ slightly due to framing, so actual capacity can vary
This tool does not calculate overhead or framing details, only direct payload conversion

Frequently Asked Questions

What does STS3 (payload) represent?: STS3 (payload) represents the user-data portion within a SONET STS-3 frame, reflecting the bytes available for client traffic after excluding overhead.
Is the conversion rate between STS3 (payload) and STS3c (payload) always 1:1?: Yes, this converter uses a direct equivalence where 1 STS3 (payload) equals 1 STS3c (payload).
Where is STS3c (payload) commonly used?: STS3c (payload) is used in optical transport networks to carry high-bandwidth client signals across contiguous SONET payload channels.

Key Terminology

STS3 (payload): The portion of a SONET STS-3 frame that holds user data, excluding framing and overhead bytes.
STS3c (payload): A concatenated SONET STS-3 payload container providing a contiguous transport channel at approximately 155.52 Mbps.
SONET: Synchronous Optical Network, a standard for optical telecommunications transport.

Quick Knowledge Check

What does STS3 (payload) denote in SONET?

The framing bytes of the SONET frame

The user-data portion of an STS-3 frame

The gross line rate including overhead

What is the conversion rate from STS3 (payload) to STS3c (payload)?

1 STS3 (payload) = 0.8 STS3c (payload)

1 STS3 (payload) = 1 STS3c (payload)

1 STS3 (payload) = 1.2 STS3c (payload)

Which use case applies to STS3c (payload)?

Carrying multiple separate low-bandwidth signals

Transporting a single contiguous high-bandwidth client signal

Billing for aggregated customer internet usage

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