WHAT IS MUX?
The operating logic of the MUX device is exactly the same as SDH devices, the only difference is that MUX devices collect data with lower bandwidth than SDH devices.
While SDH devices collect at least 2 Mbps channels, MUX devices can collect at least 64 Kbps channels.
MUX devices can collect information at lower speeds than SDH devices.
TYPES OF INFORMATION THAT THE MUX DEVICE CAN COLLECT
The MUX device transfers the collected information to the SDH devices on 2Mbps channels. As mentioned before, 2Mbps information channels consist of 32 64Kbps channels.
The MUX device can collect and send information from 32 different ends over a single 2Mbps channel.
32 AS DIFFERENT END CONCEPTS WHEN IT COMES TO KNOWLEDGE OF DIFFERENT ENDS;
- FXS (analog subscriber),
- FXO(analog trunk),
- 4W analog signal,
- 2W analog signal,
- RS232,
- RS485,
- RS422,
- V.35,
- V.11,
- V.22,
- dry contact relay, etc.
Most of the above mentioned communication technologies have different widths of data channel capacity, for example RS232 is sometimes 19.2Kbps, sometimes 9.6 Kbps, but for MUX it is a communication channel and considers its speed as 64Kbps.
As an example of the operation of a MUX device: let’s assume that each of the 32 apartments in a building is connected to one telephone. The other end of each of the lines to these phones is connected to the MUX device and the output of the MUX device is a 2Mbps line and this 2Mbps line is connected to an SDH device.