Security reason such as sim not present operation not allowed 4. At command reference entering more than one command you can enter multiple at commands on the same line, as long as the line begins with at and ends with a carriage return. Connection failure no carrier or busy or no answer 2. The hayes smartmodem commands start with the characters at for attention. Im trying to send modem dialing commands from dos to trigger a pager. At commands for a voice modem ni community national. They are called at commands because the characters at must precede each command to get the attention of the modem. At commands for smartscm, smartacf, smartacfl, and.
Once the remote device acce pts this tcp connection, the nport will send the connect signal via the serial port and then enter data mode. Hayes at command reference manual a list of hayes at commands, 3gpp at command set. At commands reference manual ii conexant 100722b revision record revision date comments 100722b 3202001 rev. The dial up and wireless modems devices that involve machine to machine communication need at commands to interact with a computer. Hyperterminal is an application that connects a computer to other remote systems. Resets s registers and commands to factory default setings from rom config profile, as a powerup would do. When the call fails, the following responses can be received from the device, 1. At command set and register summary for analog modem. Table 16 lists commands to select modem protocols up to 14400 bps. The at commands are used to control the operation of your modem. At commands for wireless modems with ip connectivity s000333b 6 chapter 1 introduction this document describes the at parameters and command set available to configure and drive the tcpip stack and protocols available on wireless gsmgprs products that support ip connectivity. Chapter 5 at commands, s registers, and result codes. The modems speaker is on until a connection is made. The dial string n, including modifiers and the telephone number is entered after the atd command.
The best way to send at commands to a modem in linux is to use the program atinout which is written with the sole purpose of sending at commands to a modem from the command line. At commands reference modem id subscriber unit identity these commands allow the user to query the type of device that is attached, the technology used in the device, as well as basic operating information about the device. Sregisters can vary a great deal, please consult the at command set specific to your modem when attempting to use these. E commands basic syntax commands basic syntax commands use the following format. Set the serial port baud rate to 19200 and the modem baud rate to 19200 or less. This section provides detailed information on all at commands supported by the global village teleport 56 x2 technology modem. Most users, therefore, need to use at commands only when reconfiguring the modem. When manual dialing, text messages are preferred, but with control from a program numeric messages may be less problematic to interpret. However, if you prefer to communicate with your modem directly, you can type the commands described below.
However, this list is supposed to be as generic as possible, and should not be extended with modemspecific commands. The dial up and wireless modems devices that involve machine to machine communication need at. The modem offers eight major categories of command statements. Where is a single character or a group of characters that represent. Fn data mode echo this command controls whether the modem echos commands sent while in data mode. At commands can be issued only when the modem is in command mode or online command mode. At commands are instructions that are used to control modems. Typing this command causes the modem to repeat the last command line entered, and is most useful for redialing telephone numbers that are busy.
Taking your exemple atdt 3334565, mean that you are sendind to the modem the ascii ahexa 41 then the ascii thexa 54 and so on the at sequence stands for attention your confusion may be how to send the commands to the modem. Use hyperterminal to test whether modem is working correctly. The rf modem operates within the ism 900 mhz frequency band. If any of these strings happen to cause additional issues with your modem, use the atz command to reset the modem back to default factory settings. This type of commands may be set to store a value or values for later use, read to determine the current value or values stored, or tested to determine ranges of values supported. Many modems today including dialup, wireless, gsmgprs modems use these at command set for communication.
I am quite relatively new to at commands and would appreciate some help. If two protocols are available at the same speed, you must also set b n to select itu or bell. S000463c 2 gprs at commands for multitech g2 cellular modems reference guide this command set applies to the following products. This ivr system uses open w3c standards like voicexml and ccxml to program your voice application and has a decent speech recognition and texttospeech tts bundled in it. At command nport response description at ok test atdt 192. Windows hyperterminal commands learn how to use hyperterminal to test your modem. Chapter 5 at commands, sregisters, and result codes introduction the at commands are used to control the operation of your modem. Before going offhook with the atd, ato, or ata commands, the si249357341504. In voice mode, there is no blocking of atdt when the line is in use. This prefix must be included in all commands unless otherwise noted. Dumb modems are not seen much these days, perhaps only on exotic hardware such as isdn terminal adapters or satellite ground terminals a. Destination address atdt and address mask atmk 33 appendix a. You can use it to test if a modem is up and running, make a backup of the phone book. Modem at commands may differ from theexample above.
If %g1 is set, you must enter a %b n command to update the modem port speed. At commands reference guide for multitech g2 cellular modems doc. You can enter several at commands on the same line. At command reference at commands control your modems settings and operation. After receiving a dial command and establishing a connection, the modem sends all received data out on the phone lines. The vast majority of dialup modems use the hayes command set in numerous variations. I do not know the commands to put the modem into voice mode, i have run supervoice voice comms software and it manages to put it in voice. Hp and compaq pcs testing the modem with hyperterminal. Interrupt readthis command causes the isomodem to report the lower eight bits. I have a usb modem which i am trying to use to perform a phone call using the following code snippet. Always consult your modem vendors documentation first. Get basic information about the mobile phone or gsmgprs modem. Fortunately, communications programs make daily operation of modems effortless by hiding the commands from the user. The hayes commands started with at to indicate the attention from the modem.
For clarity, this manual uses the nonzero form of commands. This document contains proprietary technical information which is the property of shanghai simcom wireless solutions ltd, copying of this document and giving it to others and the using or. The following lists the at control commands that a device is expected to support. This will show you the whole range of ati commands and is of great help when faced with trying to figure out what kind of modem is in your machine and possibly the driver of that modem. Added the multimodem icell to the list of products that use this command set. While reasonable efforts have been made to assure the accuracy of this document, telit assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the. Zn modem reset this command resets the modem and recalls the stored configuration as defined at power on time.
I am trying to put the modem in voice mode so that i can dial a number through labview and play a wav file which should be heard on the receiving end. The modem returns messages to the computer to indicate the return status of commands, interrupts like an incoming call and call progress. Here are some of the tasks that can be done using at commands with a gsmgprs modem or mobile phone. When you initiate a call to the remote device, your communications software transmits an atdt command, with the number to be called. However, a device may support more commands than listed. Example of commandsevents that can trigger a change of the modems operation modes. These commands come from hayes commands that were used by the hayes smart modems. Generally this at command is used for dialling the voice call. Characters such as spaces, hyphens, and parentheses are ignored by the modem and may be included in the dial string to enhance readability. The \s0 command outputs a singlescreen display press any key for the next screen. Serial programmingmodems and at commandscommands a. These messages can by either in english text, or numeric. En echo this command controls whether the modem echos commands received by the dte or not. External when connecting to a modem, there are a few basic modem settings that are very important or at least preferred.
Voxeo has a free 2 port ivr system for developers called prophecy. Therefore, you may not use the commands in this chapter. This modem language is called hayes but is usualy refered as at commands. The \s1 command outputs a continuous screen display press ctrlx or break to cancel the display. You can issue commands to the modem either directly, by typing them in the terminal window of the communications program, or indirectly, by configuring the operating system or communications program to send the commands automatically. The hayes command set is a specific command language originally developed by dennis. At commands can be issued only when the modem is in command mode or. If %g0 is set, the modem port speed is locked to the serial port speed. Modem vendors often change, add, and delete commands based on their particular product and feature set. The data used in read mode is selected by the value in x. Linux, like most unixlike operating systems, expects a serial console to be connected to a dumb modem. These include the hayes command set as a subset, along with other extended at commands. This command does not use the at prefix nor does it require a carriage return to enter.
Even if you got the modem to work you have a lot of development effort to get a basic ivr system to work. T tone dialing this command sets the modem to tone dial. Hp and compaq pcs testing the modem with hyperterminal using at commands this information applies to hp and compaq pcs with a modem running windows 98, me, and windows xp. You usually use multiple commands on the same line to configure your modem.
76 1374 1003 155 1277 189 1251 991 138 544 582 444 971 424 968 1457 201 1009 1320 1120 1108 1284 608 1200 1347 1348 1223 771 812 486 210 903 219 217 1153 586 1367 965 1547 465 414 560 1490 348 549 404 1239 731