Time:2022-04-26 Views:
The difference between a network cable and a telephone cable:
1. Different functions
1. The telephone line uses ADSL to modulate the digital signal of the computer into an analog line number and transmit it through the telephone line. After the opposite end is the telecommunications side, the analog signal is demodulated into a digital signal. Network cable Internet access is less of the modulation and demodulation step.
2. Bandwidth problem. The telephone line is affected by the physical bandwidth. Generally, the bandwidth is not too high (the maximum broadband value is 8M), and the physical bandwidth of the network cable is relatively high (a good network cable can reach 1000M or more)
Second, the interface is different
Why use the cat to connect the telephone interface, and the network cable interface does not respond. This is because the signal from the telephone line must be converted and processed by the cat before it can be forwarded to network devices, such as computers, routers, etc. hubs and switches, etc. If it is directly connected, then it is an unrecognized analog signal, which is equivalent to no signal. In other words, the role of the cat in the middle is signal conversion and simple processing. Specifically, it converts the analog signal from the telephone line into a digital signal and sends it to the network device, and converts the digital signal sent by the network device into an analog signal. The phone line goes out.
Is it okay to share the internet and telephone lines?
The method of choosing the network cable and the telephone line to share a network cable is common in the network system of small and medium-sized enterprises, especially small enterprises. Some network managers have neutralized the telephone and the network in order to save the funds of the integrated wiring for the enterprise, and choose the method of sharing one network cable for the network cable and the telephone line as the solution to the current situation. In order to avoid later management, maintenance and troubleshooting considerations, it is not recommended that the phone and the network share the same network cable.