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In telecommunications, ensuring continuous voice communication over long distances is always a key requirement, particularly in those industries where older phone systems are still operational. As VoIP and digital systems move toward more networks, analog voice connections continue to play their part. That is when FXO/FXS over fiber multiplexers step into the scene. They assist in filling the communication gap between conventional telephony and contemporary fiber optic networks through the transmission of analog voice signals via fiber.
FXO and FXS are telephony interfaces that provide interfaces to attach analog phones and PBX boxes. FXS (Foreign Exchange Station) is the interface that supplies the analog line, dial tone, and power to the phone. It is similar to the service provider side. However, FXO (Foreign Exchange Office) is the phone or fax machine port that takes in the analog line from the FXS interface. FXO provides analog devices with the ability to make and take calls.
FXO and FXS interfaces, when used together, form a pair—FXS is the service-providing one, and FXO utilizes the same. When interfaces of this sort are combined with a fiber optic multiplexer, analog voice communication is transmitted over long lengths using fiber cables rather than copper wiring.
An FXO/FXS over fiber multiplexer is a system used to carry many analog voice channels through fiber optic connections. It takes the analog signals, converts them into light signals, transmits them over long distances, and again converts them into analog at the receiving end. This allows two remote sites to talk to each other with analog phones or PBX equipment even when they are separated by some kilometers.
These multiplexers are typically implemented in industrial campuses, big campuses, remote office complexes, and other locations where legacy telephony systems have to be interconnected over a fiber optic network. The technology provides reliable and consistent voice delivery with less electromagnetic interference.
FXS over fiber multiplexers are usually mounted at the central telephone exchange or PBX end. They imitate the work of a telephone exchange by delivering dial tone, ring voltage, and power. The devices carry analog voice signals as light signals through the fiber cable to a distant point. On receipt, the light signals are converted to analog and sent to units with FXO interfaces, including phones or fax machines.
FXO over fiber multiplexers are typically placed at the end-user location where the analog equipment such as telephones or modems resides. The devices pick up analog signals from these and transform them into light signals. These are sent via fiber to a distant point, where an FXS interface picks up and reconverts them back to analog for communication with the central phone system or PBX.
One of the biggest advantages of utilizing FXO FXS over fiber multiplexers is the increased transmission distance. As compared to copper cable, the voice signals carried by fiber optics remain undegraded over 20 kilometers or more. For this reason, they are best suited for linking buildings or offices that are scattered over a vast campus or industrial complex.
Signal clarity is also a significant advantage. Fiber cables aren't susceptible to electromagnetic interference, so sound transmissions over fiber are clearer and more stable than voice calls carried over copper. That leads to fewer dropped calls, less static, and a more dependable communication system.
Multiplexers like these also enable legacy analog systems to remain operative in a contemporary infrastructure. Companies that have invested in analog telephones or PBX hardware can remain functional with them without having to completely replace their telecom infrastructure. This saves upgrade expenditure while maximizing the life cycle of older devices.
We at AKOM Technologies are experts in providing top-performance FXS over fiber multiplexers and FXO over fiber multiplexers to facilitate secure long-distance voice communication. Our products provide end-to-end analog connectivity over fiber networks.
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