dialtone pickups

by the serverLDefaultrouteIndicates that the server IP address specified by the server is used as the default route.LUser cardIndicates that the user during authentication is card, and pppd obtains the password of the card user from the/etc/PPP/PAP-secrets or/etc/PPP/chap-secrets file accordingly. The above is the description of/etc/PPP/peers/Unicom. In addition, the last file required is/etc/PPP/chat/Unicom, which is used to tell the chat program how to complete the connection establishment pr

, protocol = IP, APN = Internet:# At + cgdcont = 1, "ip", "Internet", "", 0, 0## Set cid = 1 QoS requirements from the network, not supported by 8310:# At + cgqreq =## Set cid = 1 minimum acceptable QoS parameters, not supported by 8310:# At + cgqmin =## 'Call' cid = 1 (activate PDP context one, perform GPRS attach ):# ATD * 99 *** 1 ### Ogin:-break-ogin :/# Timeout 5/# Assword :/# Say "/nlogged in OK.../N "/ # The actual chat script:Exec chat/Timeout 5/Echo on/Abort '/nbusy/R '/Abort '/nerror/R

background. It runs in the background by default.Usepeerdns use dnsThe local and remote ip addresses of defaultroute are set to 0, so that the access isp allocates a local ip address.User "login net" user nameConnect '...' calls the connection chat scriptChat scriptThe chat script is the script for sending and receiving real AT commands. Below is a chat script#/Etc/ppp/wcdma-connect-chatTIMEOUT 5ABORT "DELAYED"ABORT "BUSY"ABORT "ERROR"ABORT "

to the phone line. "or" There is no dialtone. Make sure your Modem are connected to the phone line properly. " The Prompt box. Analysis, exclude: Detect whether the modem work is normal, whether to open, check the phone line is normal, whether the correct access to the modem, the connector has no loose. 4. Symptom: computer screen appears "The Modem is being used by another dial-up networding connection or another program." Disconnect the connectio

correctly connected to the telephone line ." Or "Thereisno dialtone. Makesure yourModem is connected to the phone line properly ." . Analysis and troubleshooting: Check whether the modem works normally and is enabled; check whether the telephone line is normal, whether the modem is connected correctly, and whether the connector is loose. 13. fault: "The Modem is being used by another Dial-up Networding connection or another program" appears on The co

correctly connected to the telephone line ." Or "There is no dialtone. Make sure your Modem is connected to the phone line properly ." .Analysis and troubleshooting: Check whether the modem works normally and is enabled; check whether the telephone line is normal, whether the modem is connected correctly, and whether the connector is loose.13. fault: "The Modem is being used by another Dial-up Networding connection or another program" appears on The

mounted at ATH0Ate0 close command character echoAte1 open command character echoFactory settings for AT F modem AdjustmentAts0 = N: Set the modem to automatic response. When the modem detects the ringing tone on the line, it starts counting. When there are n consecutive ringing tones, the modem automatically picks up the machine and responds to the call.Note: after each at command is entered (except ++), + CHR (13) is input, that is, the "enter" key is used to send the command. If it is sent i

modem to host ate0 and disable the command character echo ate1 open the command character echo at F the factory settings of the modem ats0 = N set the modem to automatic response, when the modem detects the vibration tone on the line, it starts counting. When there are n consecutive sound tones, the modem automatically picks up the machine and responds to the call. Note: after each at command is entered (except ++), + CHR (13) is input, that is, the "enter" key is used to send the command. If

/ttyusb2115200DefaultrouteNoipdefaultNovjNovjccompNoccpIpcp-accept-localIpcp-accept-remoteLocalLockDumpNodetachUser "card"Password "card"CrtsctsRemoteName 3GPPPIpparam 3GPPPUsepeerdnsNote Here is/DEV/TTYUSB2, this sentence to be based on their own situation, the 4G module should be some of the manual for the AT command, PPP dialing. Look at your manual and decide if it's ttyUSB2.Other than that:User "card"Password "card"This corresponds to the above user and password.④. Also create a new file in

Original question: Assume that there are urns before you. Initially, one urn has a ball and the other urn have both balls and exactly one ball in each urn is red. At this initial stage you is asked to pick up and the balls,one from each urn. Then one white ball was added in each urn and again asked to pick up one ball from each urn then again one white BA ll is added in each urn. This process is continues for a certain time. Remember that-you-place-the-picked ball-back-to-the-urn after all pick

anddialing | Select this to enter the following screen | Screen and keyboard || Save Setup as DFL || Save setup as. || Exit || Exit from Minicom |+--------------------------+Set the use of commands during the process, such as the need to modify the value of option A, in the change with setting? Option after entering a after the cursor is transferred to the A option, you can modify the value of the A option.+--------------------[Modem and Dialingparameter Setup]---------------------+| || A-init

node is the cat mouth, test found that USB0 USB1 receive at command can return OK,USB2 USB3 directly return to timeout, stating that 2,3 is not , the cat mouth is between 0 and 1. Continue testing Lock the cat mouth for the first device/dev/ttyusb0.The next step is to write the script. SCRIPT:' NO CARRIER ' 'NO dialtone' at+cgdcont=1,'IP ","3GNET" okatdt*# CONNECTPPPD 115200 Connect "/usr/sbin/chat-f dial.script-v"/dev/ttyusb0 Modem DefaultrouteThr

2-1: New USB device Strings:mfr=1, product=2, serialnumber=3[75098.000689] USB 2-1: Product:mass Storage[75098.004995] USB 2-1: Manufacturer:generic[75098.009342] USB 2-1: SERIALNUMBER:AC3DF2EE[75098.024341] usb-storage 2-1:1.0:USB Mass storage device detected[75098.049922] Scsi0:usb-storage 2-1:1.0LSUSB command to view the results:Bus 001 Device 002:id 1e0e:9001Bus 002 Device 002:id 058f:6387Bus 001 Device 001:id 1d6b:0002Bus 002 Device 001:id 1d6b:00025. Cross-Compiling PPPSee also: http://bl

1. Applicability: Remote Monitoring System for Food and Beverage chains: restaurants, hotels, coffee shops, restaurants, and fast food restaurants. 2. Demand Analysis: The main purpose of the space for chain stores is to provide catering and leisure and entertainment services to customers. The number of entry and exit personnel is large, and the population mobility is large. This creates conditions for criminals to sneak into these places to seek opportunities to commit crimes, it directly affec

less than the Vosa and vosb change time, it can be considered that v osa and vosb remain unchanged during ts time, and the following can be obtained: The AD855X series adopts the optimal design, that is, AA = AB, BA = BB> 1. Therefore, the above formula can be reduced: As can be seen from formula (11), the AD855X series amplifier has a signal magnification of aaab, while the inherent offset of the amplifier (Vosa + vosb) is only AA. It can be seen that the use of a d855x series amplifi