The SFP (Small Form-Factor Pluggable) transceiver modules are hot-pluggable I/O devices that plug into module sockets. The transceiver connects the electrical circuitry of the module with the optical or copper network. GBIC transceiver, short name for the Gigabit Interface Converter, is a media conversion device between Gigabit Ethernet and fiber optic networks. Via the GBIC transceiver, Gigabit network equipment can directly connect to copper wires, single mode fiber ports or multimode fiber ports. Cisco SFP can be regarded as the upgrade version GBIC. Unlike GBIC with SC fiber optic interfaces, cisco SFP is with LC interface. Moreover, its main body size of SFP is only about half of GBIC, which makes SFP space saving.

Cisco pluggable transceivers offer a convenient and cost effective solution for the adoption in data centers, campuses, metropolitan area access and ring networks, and storage area networks. Users can replace a single SFP module during the process instead of replace the whole board with many modules on it. Cisco Transceiver Modules support Ethernet, Sonet/SDH and Fibre Channel applications across all Cisco switching and routing platforms. The Cisco SFP transceiver is defined by a multi source agreement between some manufacturers in the industry.

Cisco SFP fiber optic transceivers, which include Cisco GLC-T SFP, Cisco CWDM SFP, Cisco DWDM SFP, Cisco Copper SFP and Cisco Bidi SFP. Cisco GLC T SFP transceiver is a hot pluggable module use RJ45 interface, it is compliant to IEEE 802.3 and its dimension is 0.6 in x 2.8 in x 0.6 in, GLC T is with plug in module type Mini-GBIC.

GLC T is 1000Base SFP fiber optic transceiver module via Category 5 copper line, Cisco GLC T fiber transceiver provide 1Gbps data transfer and it provides full-duplex Gigabit Ethernet connectivity to high-end workstations and between wiring closets over existing copper network infrastructure. The GLC T SFP transceiver provides standard serial ID information compliant with SFP MSA, which can be accessed with address of A0h via the 2wire serial CMOS EEPROM protocol. The physical IC can also be accessed via 2wire serial bus at address A0h.

GLC T SFP Features:
Up to 1.25Gb/s bi-directional data links;
Hot-pluggable SFP footprint;
Extended case temperature range (0°C to +70°C );
Fully metallic enclosure for low EMI;
Low power dissipation (1.05 W typical);
Compact RJ-45 connector assembly;
Access to physical layer IC via 2-wire serial bus;
1000 BASE-T operation in host systems with SERDES interface;
10/100/1000Mbps compliant in host systems with SGMII interface.

Ingellen, a manufacturer supplies a various kinds of fiber optic products, has different SFP transceivers with Cisco compatible for fast Ethernet and Gigabit Ethernet, SFP,Cisco,GLC SX MM,GLC T,GLC ZX SM,GLC BX U,GLC BX D,CWDM DWDM and so on. Our Cisco SFP equivalent products are manufactured and tested strictly according to industrial standards, they are compatible to use with equipment from other companies including Cisco. We supply the SFP fiber optic transceiver modules with good price, excellent compatibility and fast delivery.