v 92 modem

is a dual-CPU architecture, as shown in figure 1. The main processor runs an open operating system and controls the entire system from the DBB (Digital Baseband Chip) where the processor is a wireless modem ), it mainly implements A/D conversion of voice signals, D/A conversion, encoding and decoding of digital voice signals, channel encoding and decoding, and timing control of wireless modem. Master-slav

ADSL is today a relatively affordable broadband access scheme, its billing is currently generally used in the way of the monthly. If a user uses an account to surf the internet, it is bound to be a bit not cost-effective, how to achieve an ADSL multiple users online? The following is an exchange of experience. Sharing principle In view of the current market mainstream Ethernet interface External ADSL modem has a built-in router, with routing functions

ADSL is today a relatively affordable broadband access scheme, its billing is currently generally used in the way of the monthly. If a user uses an account to surf the internet, it is bound to be a bit not cost-effective, how to achieve an ADSL multiple users on the Internet? The following exchange of experience. Sharing principle: In view of the current market mainstream Ethernet interface of the external ADSL modem has a built-in router, with routi

The internet will often encounter a drop in the line. The Web page can not open, download interrupted, or online video, audio streaming interruption, QQ off the line, the game out of line phenomenon. We might as well assume that the landlord is using ADSL Internet. In fact, other ways of surfing the internet often dropped the reason and the following reasons are roughly the same. Now let's analyze the reason for ADSL off line. 3lian Material One, line problem first check the home line, to se

Failure phenomenon: XP system, the normal dialing, IP address has been allocated, but is not online, QQ, browsing the web is not good, reload the cat's drive, with the dial-up software is not, the cat line and power indicators are bright, not hot, restart the computer and cat useless, can ping with their own IP, recently appeared many times, Strange is how not to do , no matter how well he's done for a while, ask for help. Solution: 1. Prompted that the search page could not be opened. This t

Troubleshooting Router Interface Serial Port Trouble Shooting Serial port connectivity problems, in order to eliminate the serial port fault, usually from show interface serial command, analysis of its screen output report content, to find out where the problem lies. The beginning of the serial port report provides the state of the interface and the status of the line protocol. There are several possible combinations of interfaces and line protocols: 1. Serial port operation, line protocol ope

digital signal into an analog signal, and the receiver uses the demodulator to convert the received analog signal into a digital signal, which is the modulation and demodulation of the signal.The device that implements the modulation and demodulation tasks is called a modem. When using the frequency band transmission, each side of the communication is connected to a modem, and the digital signal is sent to

From: http://topic.csdn.net/t/20030528/15/1845691.html Using GPRS modem to access the Internet, the current implementation method is to use PPP as a transit, the GPRS transmission layer is like this:--------IP/X.25--------Sndcp--------LLC----------------RLC----------------Mac----------------RF----------------Ms is on the left and BS is on the right. For Ms, IP support can be provided, either in me, Ta, or te, as long as there is an interface. However

Before talking about this, we will first introduce another concept, DCE (Data Communication Equipment) speed. It refers to the transmission speed between two modem devices, that is, between telephone lines. We call 56k the speed. DTE (data terminal equipment) refers to the transmission speed from the local computer to the modem. If the telephone line transmission rate (DCE speed) is 56000bps, after receivin

the analog signal received by the modem to a digital signal, which is the modulation and demodulation of the signal.The device that implements the modulation and reconciliation task is called a modem ). When band transmission is adopted, both parties connect to a modem to transmit digital signals on analog signals (carriers. Therefore, this transmission method i

ADSL Broadband Access networks are still commonly used. So I have studied the troubleshooting methods for common faults in ADSL Broadband Access networks. I would like to share with you here, hoping to help you. With the rapid development of the Internet, the ADSL Broadband Access Network is rapidly developing. The advantage of low price has become the first choice for network access for individual users. As you know, when the ADSL Modem receives the

. Sometimes I cannot access the Internet, but the speed will be slow after I go online.The network is busy. Try again later. The telephone line quality may be poor.10. Will the machine automatically start after power-on?A: In the BIOS power management settings, set "Restore ac power loss" to "DISABLED.11. What should I do if the user does not want to hear the MODEM sound?Instruct the user to disable the MODEM