OC-3. OC-3 is a network line with transmission data rate of up to 155.52 Mbit/s (payload: 148.608 Mbit/s; overhead: 6.912 Mbit/s, including path overhead) using fiber optics. Depending on the system OC-3 is also known as STS-3 (electrical level) and STM-1 (SDH).

What does OC3 mean?

OC-3 technology is a type of bandwidth transmission. It stands for Optical Carrier 3 because it carries data on the third level of a synchronous optical network, which is a network architecture with a standardized protocol for transferring data over fiber optics.

How many Mbps is OC3?

An OC3 line is a leased line transmitting at 155.52Mbit/s. It has a payload of 148.608Mbit/s, and an overhead of 6.912Mbit/s. OC stands for Optical Carrier. The ‘3’ refers to the speed: an OC3 line is three times as fast as an OC1 line.

Is OC3 a dedicated connection?

An OC3 is a 155 mbps fiber or dark fiber line for enterprise applications.



Broadband Provider Services – Broadband Connectivity Detail
Fractional T1 Line – 256 kbps to 768 kbps connection – Dedicated line for 5 to 20 users.

Is OC3 a fiber?

The FlexPoint OC3FF is a protocol-transparent fiber converter that provides reliable and cost-effective extension of network distances by connecting multimode fiber networks or devices over single-mode fiber cabling. No manual configuration is required with the plug-and-play FlexPoint OC3FF.

How many MB is an OC3?

Please provide values below to convert OC3 to megabyte/second [MB/s], or vice versa.



OC3 to Megabyte/second Conversion Table.

OC3 Megabyte/second [MB/s]
1000 OC3 18539.428710938 MB/s

How many gigs is a OC3?

OC3 to Gigabit/second Conversion Table

OC3 Gigabit/second [Gb/s]
1 OC3 0.1448392868 Gb/s
2 OC3 0.2896785736 Gb/s
3 OC3 0.4345178604 Gb/s
5 OC3 0.724196434 Gb/s

How many T1s are in OC3?

It is a large group of circuits that is equivalent to 4 OC3’s or 1344 T1s. The term OC stands for Optical Carrier. The OC12 circuit is a specific range of digital signal that can be carried on SONET fiber optic network.

How many ds3s are in a OC 3?

Would you be surprised to learn that one OC3 can carry 3 DS3, 84 DS1, or 2,016 DS0 channels? The T1 or T3 service you order might be delivered on a dedicated copper wire circuit or it might be dropped off from a larger OC3 fiber optic cable.

What is faster than a T3 line?

OC-1 service is the equivalent of DS3 or T3. It provides 672 voice channels (or 64K data channels) and runs at 52 Mbps to include the extra bits needed for the optical service. The highest OC level you can get at present is OC-768 which runs at 39,512 Mbps or about 40 Gbps (Gigabits per second).

What is T1 and T3 in networking?

A T1 line does not have nearly enough capacity to support significant demand for internet usage nowadays. Besides being used for long-distance internet traffic, T3 lines are often used to build the core of a business network at its headquarters. T3 line costs are proportionately higher than those for T1 lines.

What are T2 and T3 lines?

The T2 and T3 circuit channels carry multiple T1 channels multiplexed, resulting in transmission rates of 6.312 and 44.736 Mbit/s, respectively. A T3 line comprises 28 T1 lines, each operating at total signaling rate of 1.544 Mbit/s.