May 13th, 2007
Parallel port communications a lot of used in PC interface but usage of port public is to communicate with printer, modem, keyboard and displayed. Though communications function of parallel port can be used for controlling equipments of household electrics like lamp, fan and others. Hence important port parallel so central in the case of digital data communications, more than anything else at the moment, port parallel can be told becoming not good because its function have often replaced by USB ( Serial Universal Bus). This paper will explain software and Read the rest of this entry »
Articles Parallel port
May 12th, 2007Less commonly referred to as the Centronics interface or Centronics connector after the company that originally designed it, the port was later developed by Epson. The parallel port is found on the back of IBM compatible computers and is a 25-pin (type DB-25) computer interface commonly used to connect printers to the computer; below is an example of the DB25 interface.
The interface found on the back of parallel interfaces is commonly a 36-pin Read the rest of this entry »
Tutorial SMS Gateway
May 12th, 2007One problem of SMS messaging is that SMSCs developed by different companies use their own communication protocol and most of these protocols are proprietary. For example, Nokia has an SMSC protocol called CIMD whereas another SMSC vendor, CMG, has an SMSC protocol called EMI. We cannot connect two SMSCs if they do not support a common SMSC protocol. To deal with this problem, an SMS gateway is placed between two SMSCs. This is illustrated in the following figure. The SMS gateway acts as a relay between the two SMSCs. It translates one SMSC protocol to another one. This way can be used by two different wireless carriers to interconnect their SMSCs for purposes such as enabling the exchange of inter-operator SMS messages.
| Figure 1. An SMS gateway acts as a relay between two SMS centers. |
 |
Besides wireless carriers, content providers and SMS application developers may also find an SMS gateway useful. Let’s consider the following situation. Suppose you are the developer of an SMS text messaging application. To send and receive SMS text messages on your server, one way is to connect to the SMSCs of the wireless carriers. Different wireless carriers may use SMSCs from different vendors, which means your SMS text messaging application may need to support multiple SMSC-specific protocols. (This is illustrated in the following figure). As a result, the SMS text messaging application’s complexity and development time increases. Read the rest of this entry »
XComDrv Component For SMS
April 14th, 2007Component AUXCom very good for you when wishing to make application send accepted sms of through computer with AT Command which is consisted of by XModem And XCOMM. Download XComDrv
File Library smpp.dll
July 14th, 2006File of This lib smpp.dll good for you want to develop application of good sms gateway visually basic and also delphi, and others. Download
Posts
