Q: I originally installed Windows 98 in the C partition of my computer, and now I have Windows XP installed in the D partition. You can see that there is no option for the built-in modem I installed in Device Manager under Windows XP, and a question mark appears before "PCI simple communication" in Device Manager. How can i solve this problem?
A: This behavior is generally due to Windows XP not correctly identifying and installing
C # Serial Port and MODEM communication
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Recently, I tried serial data transmission. in C #, there is actually a good SerialPort class that makes communication between serial ports easy and easy to control.
1. The basic attributes of SerialPort are given below:
Serialport1.portname = "COM1"; // open the port of the specified serial port, or com2.Serialport1.baudrate = 9600; // baud rate, which is a ter
The modem sent to my ehouse is a castrated version that shields the route and can only have two accounts at the same time (the ehouse has two accounts). Now the computer in the house has been added, it is not enough for the two to access the Internet at the same time, so we need to crack them.
One post is well described. The privileged user telecomadmin is used to enter the modem for modification. However,
corresponding member variable M_comm as described above. You can set MSComm control properties by right-clicking the MSComm control on the dialog box template and selecting the Property menu item. In this modem communication program, set the "Control" property page handshaking is "2-comrts", or some of the domestic manufacturers modem can not normal communication. Others accept the default settings.
You c
We used to surf the Internet through my computer as proxy SERVER, other computers through this stage of the Internet, very annoying, I often one months do not turn off the machine ah, but also installed something to restart a bit of trouble, since the success of the modem configuration into a router after the cool Dora!
The steps are as follows: (Take my ea700a modem for example)
First of all, to know the
The following describes how to configure and manage an ADSL Modem using the Globespan chip.
ADSL Modem built-in firewall.1. Firewall settings Go to the Management page of the ADSL Modem and click "service> FireWall". Then we can set the FireWall in detail on the page.Blacklist Status: Blacklist Status. If you want ADSLModem to work with the blacklist, you can sel
When using the computer, found that the ADSL modem's LED is not lit.
In the normal state, the modem should have three lights. Respectively, power lights, ADSL lights, Ethernet lamps.
1.Pwer light is not lit. Power Light is the supply led, which means that the modem power supply is not plugged in, need to check the power supply.
2.ADSL light is not lit. This is the ADSL data synchronization lamp, i
The following is an example of an ADSL modem using a Globespan chip to specify how to configure and manage
ADSL modem Built-in firewall.
First, the firewall settings
Into the ADSL Modem Management page, click on "Service →firewall", we can in the page on the firewall to do detailed settings.
Blacklist Status: Blacklist state. If you want Adslmodem to use the
management interface.
7, if the above operation is still not working, you can try to reset the router. What about the
Web management interface that cannot be logged into the ADSL modem?
LAN Port led is lit, If the LAN LEDs are not lit, check the network cable, Nic is normal;
Control Panel -- network connection -- local connection Right key property, double-click Internet Protocol ( TCP/IP ) , confirm IP address a
Tags: Baud Rate Interface SMS information center
I. RG32 ModemCannot send messages?
1. Check whether the AT command is normal, the signal is normal, and the SIM card is in good contact.
2. Whether the SIM card is in arrears.
3. Check whether the baud rate of the RG32 modem is correct and whether the SIM card's SMS center number is correct.
4. Whether the used serial line is good (RG32 all serial lines are 232 interfaces 2. 3. Crossover
now basically people are using Win7 system, because the Win7 system is more stable, practical. Recently, a user installed Win7 system after the discovery is not able to access the Internet, and always prompted not to find a modem, even if the Win7 system can not be installed, this situation how to do? Let's talk about how to solve the problem of Win7 modem error.
The specific steps are as follows:
1, t
In general, use the "IP Modem" interface in the BlackBerry Desktop Manager graphical interface to surf the internet.
Note the three APN different:
1. China Mobile: cmnet, no user name password
2. China Netcom: 3gnet (Trial pass)
3. China Telecom:
Dial-up Internet 1: (Try it)
APN is ctnet, user name card, password card
Dial-up Internet 2: (Try it)
APN is ctnet, username ctnet@mycdma.cn, password vnet.mobi
Rumor:
Card/card was used by cdma
USB Modem Driver Design in linux-general Linux technology-Linux technology and application information. For details, see the following section. I recently wrote a usb modem driver for a linux system. Since I have been in touch with the linux system for a few months, I just got started with the driver. I don't know how to design it. I have read the source code of the usb serial port kernel for a while, I hav
detection, ② feet (RXD) receive data. ③ Pin (TXD) sends data. ④ foot (DTR) data Terminal ready, ⑤ foot (SG) signal ground, ⑥ foot (DSR) data device ready. ⑦-pin (RaS) request sent, ⑧ (CTS) clear send. ⑨ foot (RI) ringing indication. DB-9 male (PIN) head arrangement order for example with left, DB-9 female (hole) head in order such as right, pay special attention to the male pin number from sitting to right, the female head is from right to left . eia-rs-232c Standard, there are three send sign
The broadband error 651 is mainly due to the connection between the user terminal computer and the CNC station device. In general, there are four types of situations:
1, the network cable is not connected;
2, modem fault;
3, network card failure;
4, the modem itself set.
User Side Section
This is generally the problem (dial-up software, network card driver, USB cat drive, computer system, ADSL cat i
Many people on the internet use the COM port to connect to the mobile phone, use the mobile phone modem, use the AT command to send text messages, introduce the principles of PDU encoding, and write a ready-made class for reference and use.
Smspduclass. CLs
Option explicit
'Preserve the local variable of the attribute valuePrivate mvarsmsclen as integer local ReplicationPrivate mvarsmsctype as string' local copyPrivate mvarsmsc as string' local copyPr
Internet access settings for GSM/GPRS Modem
1. First, set the module under the Super Terminal:At OKAt + CCID // check whether a SIM card is installed+ CCID: "89860060190200147245"OKAt + cgmr // check software version, which is available only for Versions later than 5.0GPRSFunction Support534_09gg.2c2 1747684OKAt + CSQ // check the signal quality and determine whether to log on to the network.+ CSQ: 28, 0OKAt + cgclass = "B" // set the module work typ
1. mv/system/lib/libserria_gps.so/system/This is the GPS switch off.2. mv/system/lib/libnm-ril.so/system/This is to turn off Ril.3. NMEA is GPS standard format GPS data4. Find out which TTYUSBX is the AT/PPP methodWrite "ati\r\n" to each/DEV/TTYUSBX node and read the nodeFor example: Enter ADB 1 : Stopril-daemon2 : CAT/DEV/TTYUSB23 : In addition Shell Open. 4 : Perform echo-e "ati\r\n" >/dev/ttyusb2The command can also see the version of the module. 5.Bridge driver is directly to the
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