What does ISDN (dual channel) represent?

ISDN (dual channel) refers to the combined use of two 64 kbit/s B channels in an ISDN Basic Rate Interface to provide approximately 128 kbit/s data throughput.

What is STS3 (payload)?

STS3 (payload) indicates the user-data portion of a SONET level 3 frame, representing the capacity available for client traffic excluding SONET overhead.

Why convert ISDN (dual channel) to STS3 (payload)?

The conversion helps telecom professionals translate lower-speed ISDN data rates into the higher-capacity SONET payload domain for network planning and billing.

How to Convert from ISDN (dual channel) to STS3 (payload)?

Convert data transfer rates from ISDN (dual channel) to STS3 (payload) to assist with network capacity planning and telecommunications provisioning.

ISDN (dual channel)

STS3 (payload)

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

ISDN (dual channel) to STS3 (payload) Conversion Table

ISDN (dual channel)	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.

ISDN (dual channel) to STS3 (payload) Conversion Table
ISDN (dual channel)	STS3 (payload)

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What Is This Tool?

This tool enables conversion between ISDN (dual channel) data transfer rates and STS3 (payload) rates, facilitating the translation of service-level ISDN throughput into the SONET payload domain used in telecom networks.

How to Use This Tool?

Enter the ISDN (dual channel) value representing combined data throughput.
Select ISDN (dual channel) as the original unit and STS3 (payload) as the target unit.
Submit to view the converted value reflecting SONET payload capacity.

Key Features

Converts ISDN (dual channel) bonded B channel data rates to STS3 (payload) values.
Supports telecommunications and network engineering applications.
Calculates equivalent SONET payload capacity to ISDN rates.
Browser-based and easy to use for quick data transfer conversions.
Helps compare ISDN throughput to carrier-grade SONET transport capabilities.

Examples

1 ISDN (dual channel) converts to 0.0008514261 STS3 (payload).
10 ISDN (dual channel) converts to 0.008514261 STS3 (payload).

Common Use Cases

Small office or home internet access using bonded ISDN channels.
Remote LAN access requiring combined B channel throughput.
Telecom carriers provisioning OC-3 backbone links.
Network engineers planning SONET optical transport capacity.
Service providers performing leased-line billing and SLA measurements.

Tips & Best Practices

Understand ISDN (dual channel) as a service-level throughput descriptor rather than a standard SI unit.
Consider that STS3 (payload) excludes SONET overhead in calculations.
Use the tool primarily for throughput rate conversions, not for physical or signaling details.
Compare converted rates for effective network capacity planning.

Limitations

ISDN (dual channel) is not a standard SI unit and conversion precision may vary.
STS3 (payload) rate excludes overhead bytes, reflecting only payload capacity.
This conversion pertains to data rates, excluding physical layer or signaling specifics.

Frequently Asked Questions

What does ISDN (dual channel) represent?: ISDN (dual channel) refers to the combined use of two 64 kbit/s B channels in an ISDN Basic Rate Interface to provide approximately 128 kbit/s data throughput.
What is STS3 (payload)?: STS3 (payload) indicates the user-data portion of a SONET level 3 frame, representing the capacity available for client traffic excluding SONET overhead.
Why convert ISDN (dual channel) to STS3 (payload)?: The conversion helps telecom professionals translate lower-speed ISDN data rates into the higher-capacity SONET payload domain for network planning and billing.

Key Terminology

ISDN (dual channel): A data transfer rate descriptor using two bonded 64 kbit/s B channels in ISDN Basic Rate Interface to achieve about 128 kbit/s throughput.
STS3 (payload): The user-data portion within a SONET level 3 transport signal representing payload capacity excluding framing and overhead.
SONET: Synchronous Optical Network, a standardized digital communication protocol for transmitting multiple data streams over optical fiber.

Quick Knowledge Check

What is the approximate combined data throughput of ISDN (dual channel)?

64 kbit/s

128 kbit/s

155.52 Mbit/s

STS3 (payload) excludes which part of the SONET data frame?

Client user data

SONET framing and overhead bytes

Ethernet traffic

One reason to convert ISDN (dual channel) to STS3 (payload) is to:

Compare ISDN speed to SONET capacity

Analyze physical layer signaling

Calculate voice channel allocations

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