How SMS Server Communicate With a GSM Modem?
SMS Server can send and receive SMS text message and communicate with a GSM Modem using what AT Command.
One can develop a software that will enable a PC to communicate with GSM Modem.
I will show the most basic AT commands required for sending and receiving of SMS in text mode.
1. Set preferred message format (+CMGF)
There are two message formats supported: text mode and PDU mode. In this article, I shall illustrate the easier text mode.
To set the preferred message format as text mode:
AT+CMGF=1+CR
Possible response from the gsm modem: OK
2.Send SMS (+CMGS)
To send an SMS in text mode:
AT+CMGS=da+CR+text to be sent+Ctrl-Z
where
da is destination address, the recipient’s number you want to send your sms to
CR is carriage return
text to be sent is the text message you want to send
Ctrl-Z is the character 0×1A, or pressing Ctrl key and Z key together
For example, to send the message “How are you?” to the number “12345678″, you key in:
AT+CMGS=”12345678″+CR
The gsm modem will response with the character “>”. Then you key in your text:
>How are you?+Ctrl-Z
The gsm modem will respond with the following if successful:
+CMGS:+mr
OK
“mr” is the message reference, which is a number from 0 to 255 returned by the gsm modem. This number begins with 0 and is incremented by one for each outgoing message.
3.Receive SMS (+CMGR)
When a new sms arrived, the gsm modem would send the following byte stream:
AT+CMTI: “SM”,1
To read the message, the computer/software needs to send the command:
AT+CMGR=1+CR
The gsm modem will respond with something similar to the following:
+CMGR: “REC UNREAD”,”12345678″, “08/10/01 18:20:35+00″,+CR+LF
How are you?
OK
The first part is the command +CMGR, the second part is the status of the message (in this case it is UNREAD), the third portion is the sender’s mobile number, the forth portion is the base station time-stamp, followed by the the carriage return and line feed characters, the message content, and finally the “OK” terminating character.
This article aims to provide an introductory guide to how to send/receive sms using computer. The AT commands and packing of PDU mode are much more complex and will not be discussed in this article
Technorati Tags: AT Command, SMS Server
Tags: AT Command, SMS Server
In order to be able to send sms text messaging using a PC or server we need a GSM Modem. The GSM Modem is connected to PC or Server using a serial cable or USB.
Short Message Service (SMS) or Text messaging is a technology that enables users to send and receive text messages via mobile phones. Apart for personal usage, SMS (text messaging) can also be used for business purpose, such as sending products’ promotions to customers, receiving customers’ feedback, informing customers about upcoming events, and even more sophisticated tasks like hosting SMS survey or contest.
In order to perform these business operations, there is a need to have a solution that supports sending/receiving of SMS via computers. Such a solution can be achieved by using a gsm modem that connect to the computer, and a relevant software that can communicate with the gsm modem. To communicate with the gsm modem, one would need to transmit standard AT commands via serial port.
To develop sms text messaging a developer need to understand those AT commands.
We are using a JAVA langguage to develop a custom program / software that will enable you to send sms or text messaging using a pc. But our program is not only allow you to send sms text messaging, but it has more features. We will cover features on other articles.
Technorati Tags: sms text messaging
Tags: sms text messaging
There is no doubt that the sms usage in the entire world has surpassed the Internet population. Companies, small or big, who were earlier promoting their products and services on the Internet are now moving to this new concept. SMS marketing strategies provide greater solutions than Internet marketing because they can easily reach a wider audience. A mobile phone is considered to be the most personal form of marketing a marketer can find and make use of.
In an aim to extract the optimum benefits out of SMS marketing or mobile marketing, a marketer needs to follow a long-term strategy. These marketing techniques are best used when a brand is mobilised as per the requirements and pre-defined objectives of the business-in-question besides the aggregation and distribution of content. The transmission of these services to the right type of audience at the right time is also required. In this regard, an optimisation can be done in context with the end-user experience via an unparalleled understanding of the behaviour of all prospective mobile phone owners.
The SMS marketing service providers use techniques such as SMS service, sms server, SMS delivery solutions, SMS gateways and VoIP switches to build database and acts as an personalised and interactive marketing medium.
In this regard, the SMS server can be seamlessly integrated into an existing messaging system and/or application within a fraction of second. The greatest benefit of these sms server is that the integrators and developers behind the SMS delivery solutions can have complete access to a high-capacity, reliable and secure SMS messaging platform. After that, the generic protocols can be used by the developers to build and deploy mobile data applications through numerous APIs(Application Programming Interfaces).
The APIs are connected to a provider’s core messaging platform which then offers an efficient, easy and flexible mode of integration with an aim to auto-generate SMS Text messages to be delivered to the intended recipients’ mobile phone numbers. The SMS marketing solutions/SMS delivery solutions can include automated text SMS, language SMS, WAP Push SMS, ringtones, picture messages and flash SMS. The VoIP switches help to define a unique Sender Identification besides creating and managing sub-accounts with administrative rights. The SMS gateways can be easily accessed by submitting values to the HTTP API Server by the POST or GET method.
The concept of SMS marketing is revolutionising the business world with each passing day and the trend is likely to continue itself in the coming years.
a Simple yet powerfull SMS Server is needed by every marketer to promote their service or products. Reliability is a key factor of an SMS Server. Many marketer is un happy by some of SMS Server available in the market. Some of them is over priced and some of them are not delivering their promise.
That’s why we write an SMS Server using a JAVA programming langguage to deliver a powerfull SMS Server Software. Please see our product section to download SMS Server software.
Technorati Tags: bulk sms, SMS Gateway, SMS marketing, SMS Server
Tags: bulk sms, SMS Gateway, SMS marketing, SMS Server
