Ingellen, a worldwide leading manufacturer of fiber optic products, provides a wider choice for the majority of demand platform. It offers custom service for SFP transceivers with the required specifications provided like OC-3/STM-1/155M SFP, OC-12/STM-4/622M SFP, OC-48/STM-16/2.5G SFP, 1.25G SFP, 4G SFP, etc. In the below list, you will have a more particular knowledge of OC-3, OC-12 andOC-48 SFPtransceivers.

Optical Carrier(OC) 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.

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. According to the the abbreviation OC, OC transmissions can be divided into OC-1, OC-3, OC-3c / STM-1, OC-12 / STM-4, OC-24, OC-48 / STM-16 / 2.5G SONET, OC-192 / STM-64 / 10G SONET and OC-768 / STM-256. Along them, OC-3, OC-12 / STM-4 and OC-48 / STM-16 / 2.5G SONET are the most commonly used in networking.

OC-3 SFP
OC-3 SFP moduleis a network line with transmission speeds of up to 155.52 Mbit/s(payload: 148.608 Mbit/s; overhead: 6.912 Mbit/s, including path overhead). Depending on the system, OC-3 is also known as STS-3, STM-1 (SDH). OC-3 SFP modules are often used for Fast Ethernet, SDH/SONET and FTTx applications.

OC3 SFP module is specifically designed for the high performance integrated duplex data link over single mode optical fiber. These transceiver modules are compliant with the SFP Multisource Agreement (MSA). With the hot pluggability, these modules offer an easy way to be installed into SFP MSA compliant ports at any time without the interruption of the host equipments operating online.

OC-12 SFP
OC-12 SFP 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-48 SFP
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 SFPconnections, and even surpassing gigabit Ethernet, OC-48 connections are used as the backbones of many regional ISPs. The OC-48/STM-16 capabilities on the Cisco ONS 15600 Series consist of two optical line cards, providing interface specifications that meet the varied application needs of the service provider.

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.

Ingellen also offers various type of fiber optic devices, including all kinds of fiber optic transceivers, video multiplexers, media conventers and passive components and so on, which are all high performance but low price. Enjoy your shopping at www.ingellen.com. You can contact sales@ingellen.com for more detailed product or service information. Ingellen guarantees you will beyond your expectation there.

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