How can I integrate sms api in Contact7 form in wordpress

I have taken SMS service from http://bulksmsindia.mobi/bulksmsindia/index.html. I want to integrate SMS in my WordPress website as a confirmation form submission. I have got from the service provider below but how can I integrate please guide.

Bulk SMS India Developers API

HTTP API Details

Send SMS(Comma Seperated):

http://bulksmsindia.mobi/sendurlcomma.aspx?user=profileidpwd=passwordsenderid=ABCmobileno=9999999989,9999999990,9999999991msgtext=Hello

Code Sample:(Send SMS)

''''write code for loop while (you can open record set here)
 sResponse = ""
 sResponse = SMSSend(pno, message )
 If right(sResponse,15) = "Send Successful" Then
 'write your code here
 End If
 '''End Wend
 Function SMSSend (strPh,strMsg)

 Dim msgResponse
 Dim strRequest
 Dim strUrl
 msgResponse = ""

 strPh=right(strPh,10)
 If not IsNumeric(strPh) Or len(strPh)  10 Then
 msgResponse = "Enter valid Mobile Number."
 End If
 If strMsg = "" Then
 msgResponse = "Enter text message."
 End If

 strUrl = "http://bulksmsindia.mobi/sendurlcomma.asp?"
 strRequest = strRequest+"user=profileid"
 strRequest = strRequest+"pwd=pass"
 strRequest = strRequest+"senderid=senderid"
 strRequest = strRequest+"mobileno="+strPh
 strRequest = strRequest+"msgtext="+Server.URLEncode(strMsg)

 strUrl = strUrl+strRequest

 If msgResponse = "" Then
 Dim oXML
 Dim sPage
 Err.Clear
 On Error Resume Next
 Set oXML = Server.CreateObject("Msxml2.XMLHTTP")
 oXML.Open "get", strUrl , false
 oXML.Send
 msgResponse = oXML.ResponseText
 Set oXML = Nothing
 End If

 SMSSend = msgResponse

 If Err.Number  0 Then
 SMSSend = "Problem on sending sms : " Err.Description
 End If

 End Function