I working on a website which have function for sending SMS messages. What i know is the GSM modem use AT COMMAND to send/receive the message. I already have the modem but i can't find a way to sending the AT COMMAND from php script to the modem. Can someone give me a clear direction.
Many thanks.
I want to build a java application which will receive SMS & will reply automatically using text from database. I want to use GSM SMS Modem for this. I'll send/receive abt 200-250 SMS per hour. I have no idea about GSM SMS Modem. Can you give an idea which features I'll need to achieve my goal?
Thanks in advance.
I want to know how to send and receive SMS via PC modem over PSTN? Is there any application to do this for me or what's the protocol of this process?
If you are just trying to send SMS via your PC try Google Voice. It is free and it lets you send and receive SMS from a web browser.
You need an operator who supports fixed line SMS and you need a modem that can send the SMS such as:
http://www.ntstelecom.co.uk/SMSmodem.htm
An application which can send SMS's using a GSM modem and AT commands will probably be able to use the above, in place of the GSM modem, to send the SMS over the PSTN.
I am creating a small VB project and I want to send some information through SMS. I tried to find solutions in here many threads but can get one.
I am using Huawei E1731 3G USB modem, which is capable of sending and receiving sms through its official software. How can i use the modem to send a fixed message to particular number by getting the number from text box in a form?
Hopefully you are using VB.NET and not VB6.
Here is a solution in C#.NET which you should easily be able to convert to VB.NET :
http://sharp-coders.blogspot.in/2011/12/send-sms-using-at-commands-via-gms.html
I'm taking shots in the dark here. I'd like to create a web service where eventually I send an SMS by using my own hardware. I'm not sure what I need in order to send an SMS myself. I don't want to use any of the existing SMS send services out there, I need to be able to send these SMS myself.
It looks like there's one opensource project in particular that deals with this, "Kannel":
http://www.kannel.org/
what I don't understand is, do I need to get a GSM modem to be able to send SMS? Do SMS gateways (like Kannel) eventually need to get to a GSM modem to send messages, or is there some other hardware you need to be able to actually send the messages?
Thanks
Just find an online SMS Gateway. These Gateway providers are your best bet since they have handled all the heavy lifting for you. Just utilize their API and you should be able to do whatever you want. Some of these gateways are free and some are not. I've included a short list below.
https://www.clickatell.com/pricing/message_cost.php
http://www.zeepmobile.com/
(Carrier based SMS transit)
http://en.wikipedia.org/wiki/List_of_carriers_providing_SMS_transit
I'm sure there are a ton more, but this will get you started.
You always need a GSM modem to send the SMS unless you use a provider that handles this for you (but they usually want money for this).
If you want to setup your own Hardware infrastructure, you have to get GSM Modem, A Sim card and use it to send SMS.
Other option, which I recommend, is to use SMS getways and use
SMPP protocol
XML or HTTP Apis
In later, you dont have to create any infrastructure and the starting cost will be very low compared to GSM Modem. You can get up and running in a day.
Note : to reduce the SMS costs, you should choose different getways for different countries. In India you can easily find getways who provides SMS at merely 3 paise
You will have to download an API that handles the sending and recieving of messages for you. I once used this in one project where i had my GSM Phone connected to my computer thru one of the COM ports. Configured the API to communicate thru the COM Port to listen to any incoming text messages also send messages thru my GSM Phone. Here is a great link to the resources i used for that project. I hope this will help. http://www.codeproject.com/KB/cs/SMS.aspx