What does the mobile broadband fault phone 955 start with?

The failure number of mobile broadband is 10086. Just dial 10086 and follow the voice feedback.

The traditional telephone line system uses the low frequency part of copper wire (frequency band below 4kHz). ADSL adopts DMT (Discrete Multi-tone) technology, which divides the frequency band from 0 khz to 1. 1MHz of the original telephone line into 256 subbands with a bandwidth of 4.3khz.

Among them, people in the frequency band below 4khz are used to transmit POTS (traditional telephone service), the frequency band from 20KhZ to 138KhZ is used to transmit uplink signals, and the frequency band from 138KhZ to 1. 1MHZ is used to transmit downlink signals. DMT technology can adjust the number of bits modulated on each channel according to the situation of the line, thus making full use of the line.

Broadband troubleshooting

First, check whether the Modem light is normal.

First of all, whether the ADSL modem is "synchronous" is a sign that the ADSL modem works normally. If the modem is not synchronized, it is absolutely impossible to dial up the Internet. Generally, checking whether the modem is synchronized depends on whether the synchronization light of the modem is on (not flashing).

Second, check whether the network card light is normal.

The network card light is a sign of the connection between ADSL modem and computer network card. If it doesn't light up, there is a problem with the connection between the modem and the network card. To check whether the network cable is loose or connected incorrectly, try plugging and unplugging it several times or replacing the network cable.