Hello.. I'm currently creating a Web App and I need to integrate SMS functionality in it. I need it to be capabale of sending and receiving SMS. Could anyone suggest a possible solution to this? Thanks in advance,
If you need to send sms to specific areas only. and amount of outgoing sms is not very heavy you can use a serial port GSM modem & local GSM service provider. For doing this way you need a bit of Hradware and embedded system knowledge. there are few more methods but you need to understand the boundaries of the system http://www.jataayusoft.com/MgSMSG.htm this link might give you more information
I work the same way too. For clickatell, there also exists a sort of very simple PHP API for it. That project could by example be found on PHPClasses. A handy resource about PHP and SMS could be found here