What Is This Tool?
This is an online unit converter focused on data transfer measurements. It allows users to convert the capacity of Virtual Tributary 2 (VT2) signals, a SONET/SDH sub-rate format, into equivalent ISDN (dual channel) rates used in ISDN Basic Rate Interface configurations.
How to Use This Tool?
-
Enter the data transfer value in Virtual Tributary 2 (signal) units.
-
Select Virtual Tributary 2 (signal) as the source unit.
-
Choose ISDN (dual channel) as the target unit.
-
Click convert to get the data transfer value in ISDN dual channel units.
Key Features
-
Converts higher-rate SONET/SDH VT2 signal data rates to ISDN dual channel equivalents.
-
Simple, browser-based interface for quick data transfer unit conversions.
-
Supports telecom network planning and interoperability analysis.
-
Provides conversion formulas and practical examples for clarity.
Examples
-
1 Virtual Tributary 2 (signal) equals 18 ISDN (dual channel).
-
3 Virtual Tributary 2 (signals) convert to 54 ISDN (dual channel).
Common Use Cases
-
Transporting E1 (2.048 Mbps) circuits over SONET backbones.
-
Planning capacity and provisioning in telecom networks combining SONET/SDH and ISDN services.
-
Configuring multiplexers or digital cross-connects to groom PDH channels.
-
Translating higher-rate SONET/SDH data into equivalent ISDN bonded channel capacity.
Tips & Best Practices
-
Use this converter primarily for planning and comparative data throughput purposes.
-
Ensure you understand the difference between bonded channel rate descriptors and physical data units.
-
Cross-check conversions with telecom network design requirements for accurate provisioning.
-
Remember the conversion reflects approximate equivalency, not hardware compatibility.
Limitations
-
ISDN (dual channel) rates are lower and represent bonded channel configurations, not standard SI units.
-
Conversions are approximate and meant for planning rather than exact hardware compatibility.
-
The tool does not account for hardware or protocol differences between SONET/SDH and ISDN systems.
Frequently Asked Questions
-
What does Virtual Tributary 2 (signal) represent?
-
Virtual Tributary 2 (VT2) is a SONET/SDH format carrying a 2.048 Mbps payload inside higher-rate SONET/SDH frames, enabling multiplexing of lower-rate PDH circuits.
-
What is ISDN (dual channel)?
-
ISDN (dual channel) uses both 64 kbit/s B channels of an ISDN Basic Rate Interface in parallel to provide a combined data throughput near 128 kbit/s.
-
Why convert VT2 signals to ISDN dual channels?
-
Conversion helps translate SONET/SDH circuit capacities into ISDN bonded channel data rates for network planning and ensuring interoperability.
Key Terminology
-
Virtual Tributary 2 (VT2)
-
A SONET/SDH sub-rate signal format carrying a 2.048 Mbps payload inside higher-rate frames to transport E1 circuits.
-
ISDN (dual channel)
-
A configuration using both 64 kbit/s B channels of an ISDN Basic Rate Interface in parallel to provide about 128 kbit/s data transfer.
-
SONET/SDH
-
Synchronous Optical Networking/Synchronous Digital Hierarchy, high-speed digital transport protocols used in telecom networks.