modem

How to setup Quality of Service?

I'm talking about http://en.wikipedia.org/wiki/Quality_of_service. With streaming stackoverflow podcasts and downloading the lastest updates to ubuntu, I would like to have QoS working so I can use stackoverflow without my http connections timing out or taking forever. I'm using an iConnect 624 ADSL modem which has QoS built-in but I ca...

How to access a PCMCIA modem's serial number?

A Sprint cellular modem plugs into a laptop - often the PCMCIA slot. To connect, the user opens a program called the Connection Manager. This program has a menu option to display the serial number and phone number of the modem that's currently inserted. Does that imply that the serial/phone number of the modem could be available to othe...

How do you handle unsolicited responses (like incoming calls) when handling sms with a gsm modem

I have tried to develop a gsm modem library for handling sms built around system.io.ports.serialport. it does not handle unsolicited responses very well, in particular incomming calls. i resort to sending AT hangup commands for each incoming call, however the unsolicited responses can popup even while you are doing other processing. this...

AutoUpdater: 56K dialup connection, what normally is the upload speed?

Hi, I'm building a auto updater and I need to know what kind of upload speeds people get on a 56K modem? ...

Windows Mobile 6 AT commands

I'm trying to get CellID using AT commands, but I dont get any response from the modem, mine code looks like below, I send AT+CCED command, but never get any response. HANDLE hCom; char * xpos; char rsltstr[5]; DWORD returnValue; DWORD LAC; DWORD CellId; int bufpos; DCB dcb; COMMTIMEOUTS to; DWORD nWritten; DWORD event; DWORD nRead; cha...

Free Modem / Serial Communications Library or Scriptable App with ZMODEM/KERMIT

My task appears simple at first: dial into a terminal over a modem, login, possibly send some other characters, and then receive file(s) via ZMODEM or KERMIT .. or send a file via ZMODEM or KERMIT. I've been tearing my hair out trying to get this working correctly. Mostly I'm stuck on the ZMODEM protocol. I have a working implementation...

Old ASCII Protocol Avatar Question

For anyone that remembers the protocol Avatar, (I'm pretty sure this was it's name) I'm trying to find information on it. All I've found so far, is that it's an ANSI style compression protocol, done by compressing common ANSI escape sequences. But, back in the day, (The early 90's) I swore I remembered that it was used to compress ASCI...

Two Modems, two SerialPort objects in C#

I have two Conexant fax modems, and a C# app with two serialPort objects setup to listen for incoming data on both comm ports. Here is how I initialize each modem: m_SerialPort = new SerialPort("COM3", 2400); m_SerialPort.DataReceived += new SerialDataReceivedEventHandler(this.ReceiveChars); try { m_SerialPort.Open(); m_Serial...

Modem connected via USB: sniffing of "AT commands" possible?

Hi guys, can somebody confirm if I can use USB sniffing to capture the "AT commands" sent to an HSDPA modem from an external application? ...

create a dialtone from 56k modem

Ok, everybody get in your wayback machine. I need to have a phone dial into my computer's 56k modem. I need my computer to have the modem "on" and have an active dialtone. Here is why: I have a sump pump alarm that will call me on a pump failure. It only works with a landline. I want to stop paying for my landline to save money and just ...

Connecting to a Linux-based server over a modem

I have a black-box device with a modem attached (which I can send commands to), and would like to be able to connect to send data to a server from it. What connectivity options do I have, is PPP the protocol I need to use or is there a better option? ...

How do you send AT GSM commands using python?

Guys, How do i send AT GSM commands using python? Am able to do this quite easily using Delphi and some comport component (TComport), but how do i talk to my modem using python? Gath ...

Full examples of using Pyserial package

Can someone please show me a full python sample code that uses pyserial, i have the package and am wondering how to send the AT commands and read them back! H-e-l-p ! ...

Call Using GSM modem

Hai I am developing Sms Project in vb.net.I can Send and receive Sms Easily. I can attented Incoming call and dial. but not hearing and talk. I connected with com Port. This is possible or not for talking and hearing. please tell me ...

Is there any library/component for dial-up connections?

I want to dial-up through VoIP. Yes, I know that it's almost impossible. I have heard that softmodems use software for DSP, but I guess the code its hardware specific. If I only could isolate the code that makes the modem signal I could use it on my project. Anyone ever heard about a library that would fullfill my needs? PS: iaxmodem on...

File transfer between 2 remote systems using internal modem

My requirement is to write an application to send a file from a remote machine to another machine using internal modem. Both system are connected thru VPN or a internet. Basically we have two systems both having internal dial up modems. The two systems are connected through either VPN or Internet. One system should send a file (XML) to...

Sharing serial port (Modem protocol + dialer)

Hi, I wanted to use this code to send archives with Xmodem: http://www.java2s.com/Code/Java/Network-Protocol/JModemsimplecommunicationsprogram.htm In this case, I want to establish a dialup connection between two computers and send a binary file. But this code doesn't let me set a phone number to dial after i setup the port and before I...

Wireless data transfer

I have to transfer files between two computers using GSM 81GR modem and a BSNL sim card is used for both the modems. But apparently in to transfer files using Hyperterminal, we need to have the Data card numbers of the sim card and for BSNl, there is no such concept. I need to find out as to how can i do the same with the voice numbers a...

Java to access pci-modem

Hi, I have a pci-modem in my laptop and I tried to run a program that opens the port and configures it.I get an excepcion while doing it, I think that it can't see the port, even though it is on COM3. Is there any way of doing it in java? The error I get is noClassDefFoundError. It says the SerialPortEventListener class isn't found. I...

Why SerialEvent.RI doesn't work?

Hi, I have two computers running this code: import java.io.; import java.util.; import gnu.io.*; public class Deb implements SerialPortEventListener, Runnable{ public static final int TIMEOUTSECONDS = 30; public static final int BAUD = 9600; static String telefono; static Boolean llamar = false; CommPortIdentifier cpiModem = null; ...