Optical Carrier transmission rates - Wikipedia Optical Carrier transmission rates Optical Carrier transmission rates are a standardized set of specifications of transmission bandwidth for digital signals that can be carried on Synchronous Optical Networking ( SONET ) fiber optic networks. Transmission rates are defined by rate of the bitstream of the digital signal and are designated by hyphenation of the acronym OC and an integer value of the multiple of the basic unit of rate, e.g., OC - 48. The base unit is 51.84 Mbit / s. Thus, the speed of optical - carrier - classified lines labeled as OC - n is n × 51.84 Mbit / s. Contents 1 Optical Carrier specifications 1.1 OC - 1 1.2 OC - 3 1.3 OC - 3c / STM - 1 1.4 OC - 12 / STM - 4 1.5 OC - 24 1.6 OC - 48 / STM - 16 / 2.5 G SONET 1.7 OC - 192 / STM - 64 / 10G SONET 1.8 OC - 768 / STM - 256 1.9 OC - 1920 / STM - 640 1.10 OC - 3840 / STM - 1234 2 References Optical Carrier specifications This section needs to be updated. Please update this article to reflect recent events or newly available information. ( February 2016 ) Optical Carrier classifications are based on the abbreviation OC followed by a number specifying a multiple of 51.84 Mbit / s : n × 51.84 Mbit / s = > OC - n. For example, an OC - 3 transmission medium has 3 times the transmission capacity of OC - 1. OC - 1 OC - 1 is a SONET line with transmission speeds of up to 51.84 Mbit / s ( payload : 50.112 Mbit / s ; overhead : 1.728 Mbit / s ) using optical fiber. 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 ). OC - 3c / STM - 1 OC - 3c ( `` c '' stands for `` concatenated '' ) concatenates three STS - 1 ( OC - 1 ) frames into a single OC - 3 look alike stream. The three STS - 1 ( OC - 1 ) streams interleaved with each other such that the first column is from the first stream, the second column is from the second stream, and the third is from the third stream. Concatenated STS ( OC ) frames carry only one column of path overhead because they can not be divided into finer granularity signals. Hence, OC - 3c can transmit more payload to accommodate a CEPT - 4 139.264 Mbit / s signal. The payload rate is 149.76 Mbit / s and overhead is 5.76 Mbit / s. OC - 12 / STM - 4 OC - 12 is a network line with transmission speeds of up to 622.08 Mbit / s ( payload : 601.344 Mbit / s ; overhead : 20.736 Mbit / s ). OC - 12 lines are commonly used by ISPs as Wide area network ( WAN ) connections. While a large ISP would not use an OC - 12 as a backbone ( main link ), it would for smaller, regional or local connections. This connection speed is also often used by mid-sized ( below Tier 2 ) internet customers, such as web hosting companies or smaller ISPs buying service from larger ones. OC - 24 OC - 24 is a network line with transmission speeds of up to 1244.16 Mbit / s ( payload : 1202.208 Mbit / s ( 1.202208 Gbit / s ) ; overhead : 41.472 Mbit / s ). Implementations of OC - 24 in commercial deployments are rare. OC - 48 / STM - 16 / 25 g SONET OC - 48 is a network line with transmission speeds of up to 2488.32 Mbit / s ( payload : 2405.376 Mbit / s ( 2.405376 Gbit / s ) ; overhead : 82.944 Mbit / s ). With relatively inexpensive interface prices, and being faster than OC - 3, OC - 12 connections, and even surpassing gigabit Ethernet, OC - 48 connections are used as the backbones of many regional ISPs. Interconnections between large ISPs for purposes of peering or transit are quite common. As of 2005, the only connections in widespread use that surpass OC - 48 speeds are OC - 192 and 10 Gigabit Ethernet. OC - 48 is also used as transmission speed for tributaries from OC - 192 nodes in order to optimize card slot utilization where lower speed deployments are used. Dropping at OC - 12, OC - 3 or STS - 1 speeds are more commonly found on OC - 48 terminals, where use of these cards on an OC - 192 would not allow for full use of the available bandwidth. OC - 192 / STM - 64 / 10g SONET OC - 192 is a network line with transmission speeds of up to 9953.28 Mbit / s ( payload : 9510.912 Mbit / s ( 9.510912 Gbit / s ) ; overhead : 442.368 Mbit / s ). A standardized variant of 10 Gigabit Ethernet ( 10GbE ), called WAN PHY, is designed to inter-operate with OC - 192 transport equipment while the common version of 10GbE is called LAN PHY ( which is not compatible with OC - 192 transport equipment in its native form ). The naming is somewhat misleading, because both variants can be used on a wide area network. OC - 768 / STM - 256 OC - 768 is a network line with transmission speeds of up to 39,813.12 Mbit / s ( payload : 38,486.016 Mbit / s ( 38.486016 Gbit / s ) ; overhead : 1,327.104 Mbit / s ( 1.327104 Gbit / s ) ). On October 23, 2008, AT&T announced the completion of upgrades to OC - 768 on 80,000 fiber - optic wavelength miles of their IP / MPLS backbone network. OC - 768 SONET interfaces have been available with short - reach optical interfaces from Cisco since 2006. Infinera made a field trial demonstration data transmission on a live production network involving the service transmission of a 40 Gbit / s OC - 768 / STM - 256 service over a 1,969 km terrestrial network spanning Europe and the U.S. In November 2008, an OC - 768 connection was successfully brought up on the TAT - 14 / SeaGirt transatlantic cable, the longest hop being 7,500 km. OC - 1920 / STM - 640 OC - 1920 is a network line with transmission speeds of up to 99,532.8 Mbit / s. OC - 3840 / STM - 1234 OC - 3840 is a network line with transmission speeds of up to 200 Gbit / s. References Jump up ^ `` Synchronous Optical Network ( SONET ) ''. Web ProForums. International Engineering Consortium. Archived from the original on 2007 - 05 - 02. Retrieved 2007 - 05 - 25. Jump up ^ Cartier C, Paynetitle T ( 2001 - 07 - 30 ). `` Optical Carrier levels ( OCx ) ''. Retrieved 2007 - 05 - 25. Jump up ^ `` AT&T Completes Next - Generation IP / MPLS Backbone Network, World 's Largest Deployment of 40 - Gigabit Connectivity ''. AT&T press release, October 23, 2008. Accessed 28 January 2009. Jump up ^ `` First Transatlantic 40G IP - Router -- ( optics only ) -- IP - Router link '' ( via archive.org ). North American Network Operators Group, Merit Network Email List Archives. Accessed 28 January 2009. Jump up ^ Lehpamer, Harvey ( 2002 ). Transmission Systems Design Handbook for Wireless Networks. Artech House. ISBN 9781580532433. Optical telecommunication Basic Smoke signal Beacon Hydraulic telegraph Ships flags Semaphore line Heliograph Signal lamp Advanced Fiber - optic telecommunication Free - space optical telecommunication Optical wireless Optical fiber cable connector Optical Carrier Photophone Intensity modulation Modulating retro - reflector Optical Transport Network Telecommunications History Beacon Broadcasting Cable protection system Cable TV Communications satellite Computer network Drums Electrical telegraph Fax Heliographs Hydraulic telegraph Internet Mass media Mobile phone Optical telecommunication Optical telegraphy Pager Photophone Prepay mobile phone Radio Radiotelephone Satellite communications Semaphore Smartphone Smoke signals Telecommunications history Telautograph Telegraphy Teleprinter ( teletype ) Telephone The Telephone Cases Television Timeline of communication technology Undersea telegraph line Videoconferencing Videophone Videotelephony Whistled language Pioneers Edwin Howard Armstrong John Logie Baird Paul Baran Alexander Graham Bell Tim Berners - Lee Jagadish Chandra Bose Vint Cerf Claude Chappe Donald Davies Lee de Forest Philo Farnsworth Reginald Fessenden Elisha Gray Erna Schneider Hoover Charles K. Kao Hedy Lamarr Innocenzo Manzetti Guglielmo Marconi Antonio Meucci Radia Perlman Alexander Stepanovich Popov Johann Philipp Reis Nikola Tesla Camille Tissot Alfred Vail Charles Wheatstone Vladimir K. Zworykin Transmission media Coaxial cable Fiber - optic communication Optical fiber Free - space optical communication Molecular communication Radio waves Transmission line Network topology and switching Links Nodes Terminal node Network switching ( circuit packet ) Telephone exchange Multiplexing Space - division Frequency - division Time - division Polarization - division Orbital angular - momentum Code - division Networks ARPANET BITNET Cellular network Computer CYCLADES Ethernet FidoNet Internet ISDN LAN Mobile NGN NPL network Public Switched Telephone Radio Telecommunications equipment Television Telex WAN Wireless World Wide Web Portal Retrieved from `` https://en.wikipedia.org/w/index.php?title=Optical_Carrier_transmission_rates&oldid=800384740 '' Categories : Synchronous optical networking Fiber - optic communications Hidden categories : Wikipedia articles in need of updating from February 2016 All Wikipedia articles in need of updating Talk Contents About Wikipedia Français Русский Edit links This page was last edited on 13 September 2017, at 05 : 57. About Wikipedia

Question: the transmission rate of an optical carrier oc-24 is
Answer: up to 1244.16 Mbit/s (payload: 1202.208 Mbit/s (1.202208 Gbit/s); overhead: 41.472 Mbit/s)