how to send deliver_sm request from SMSC

Question

i am creating an application where my mechine will act like a SMSC. And from there i need to send only deliver_sm. The server will send the bind request. I need to bind my mechine with the server. My application will work like a smpp client. I have logica smpp.jar. But i am confused how to send only deliver_sm. Please give me some ideas and code. can anybdy please tell me how to send outbound request,,that will also be very helpful for me. thanks koushik.

Answer 1

Your question cannot be answered the way it is presented now. I explained two possible setups below and then solutions you are seeking. My answers are based on SMPP 3.4 spec.

Setup

Setup-1: You are creating a SMPP client

1. You are creating a SMPP client. Clients usually initiate connections. Clients are also known as ESME (External Short Message Entity).
2. Your client will connect to a SMSC. SMSC are servers and they usually wait for connections.
3. An ESME can send messages via "submit_sm" or "data_sm" PDU.

Setup-2: You are creating a SMSC

1. A SMSC can send messages via "deliver_sm" or "data_sm" PDU.

Initiating connection

Usually ESME will send a bind request to SMSC. A bind request can be send via one of "bind_transmitter", "bind_receiver" or "bind_transceiver" PDU.

The SMSC can be eager and invite an ESME to send bind request via "outbind" PDU. In this case, the SMSC has to know the IP/port of the ESME. It is rarely used.

Here a snippet of sending outbind request

//you will need these classes
import org.smpp.Session;
import org.smpp.pdu.Outbind;

Session session = .... ;//Assuming you created a session instance
Outbind outbind = new Outbind(...);//assuming you created a outbind instance

session.outbind(outbind);//send outbind

Sending messages

I already discussed this in the setup part. Repeating here,

1. An ESME can send messages via "submit_sm" or "data_sm" PDU. data_sm is not frequently used.
2. A SMSC can send messages via "deliver_sm" or "data_sm" PDU. data_sm is not frequently used.

I am not sure why sending only "deliver_sm" is so important. As coder, you have control over the kind of PDU you are going to send.

Here a snippet of sending deliver_sm request

//you will need these classes
import org.smpp.Session;
import org.smpp.pdu.DeliverSM;

DeliverSM pdu = new DeliverSM();
pdu.setSequenceNumber(1);//set unique numbers
pdu.setSourceAddr(new Address(1, 1, "12120001234"));//TON, NPI, source number
pdu.setDestAddr(new Address(1, 1, "12120004321"));//TON, NPI, destination number
pdu.setShortMessage("Hello world");
session.deliver(pdu);