Send sms from asp.net website--Need help

Hi,

I have asp.net website in page load i need to send an sms to mobile number entered.

I do not want to use 3rd party provider for sending sms.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class SMS : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        SendSMS();

    }

    public void SendSMS()
    {
        UriBuilder urlBuilder = new UriBuilder();
        urlBuilder.Host = "127.0.0.1";
        //urlBuilder.Port = 8800;
        urlBuilder.Port = 64815;
        string PhoneNumber = "9677163354";
        string message = "Just a simple text";

        urlBuilder.Query = string.Format("PhoneNumber=%2B" + PhoneNumber + "&Text=" + message);

        System.Net.HttpWebRequest httpReq = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(new Uri(urlBuilder.ToString(), false));
        System.Net.HttpWebResponse httpResponse = (System.Net.HttpWebResponse)(httpReq.GetResponse());
    }


}

The remote server returned an error: (404) Not Found.

Error in

System.Net.HttpWebResponse httpResponse = (System.Net.HttpWebResponse)(httpReq.GetResponse());

REGARDS

Guhananth.S