Fxs and fxo are the names of the ports used by analog telephone lines (also known as POTS - plain old telephone service) Fxs—The peripheral switched user telephone interface is the trick to transmit analog lines to the telephone. In other words, it is the transmission of dial tone, battery current and ringing voltage. Fxo - The peripheral exchange interface is the trick to accept analog lines. It is a telephone or fax machine, or a jack on an analog telephone system that transmits an on-hook/off-hook indication (loop closed). Since the fxo port is attached to a device, such as a fax machine or a telephone, such a device is often referred to as a "fxo device." Fxo and fxs are always complementary, similar to the relationship between plugs and sockets. If there is no corporate communication switch, the phone will connect directly to the fxs port provided by the telephone company. Fxs (Foreign Exchange StaTIon) emulation user interface It can be understood as a DCE (Data Communication Equipment) interface in computer communication. Used to connect the end device with the fxo port. The fxs interface is used to directly connect to the telephone; the external line of the PBX is connected, and the feed signal is provided to the PBX trunk by the fxs interface. as the picture shows: Fxo (Foreign Exchange Office) analog trunk interface It can be understood as a DTE (Data Terminal Equipment) interface in computer communication. Connect the telephone switch device with the fxs port, the fxo interface is used to connect to the PSTN, and is used to connect the PBX extension internal line, and the PBX provides the feed signal to the fxo interface. Fxs and fxo complete the call control of the telephone by forming a loop disconnection and closing and current signal through a two-core cable. Note: Simple understanding! Fxs: can be connected to the telephone and the external port of the PBX Fxo: You can pick up the line of the company's internal PBX extension and the telecom office. More popular, fxo is a telephone. Then just take a line from the company's internal PBX and you can do it. Or directly from the telecommunications application line directly connected to fxo. E1 is a digital interface, and 30 telephones are used in China and Europe. T1 is American standard. T1 is a 24-way telephone! 1. The mouth of the ordinary telephone is the port of the fxs port connected to the pstn line is the fxo port. 2, the appearance is exactly the same, there is no difference 3, under normal circumstances, the iad device calls are all IP (voip) but if the iad device is powered off (the call can not be sent out from the network port) how to call out, the solution at this time is to pull a telecommunications phone The line is connected to fxo of the iad device, then we call out through fxo Under normal circumstances: phone ----- (iad device fxs port)--IAD device----(iad device network port)--internet network----(in some way send the call to the called party)- ---called In case of power failure: phone----(iad device fxs port)--IAD device----(iad device fxo port)----------pstn network-------- (Send the call to the called party in some way)----called 110V Gear Motor,Ac Motor Low Rpm,Customized Ac Gear Motor,Customized Ac Geared Motor NingBo BeiLun HengFeng Electromotor Manufacture Co.,Ltd. , https://www.hengfengmotor.com
