SMPP (Short Message Peer to Peer) / International Messaging Service

International Messaging Standard 

SMPP  (Short Message Peer to Peer)

1. SMPP? Short Message Peer-to-Peer Protocol Specification SMS 

2. SMPP Sauce URL : Open source URL http://opensmpp.org/specs/smppv50.pdf

3. Advantage of SMPP : Using the SMPP protocol instead of sending messages using a GSM modem has the following advantages:

1)

The SMPP protocol is TCP/IP based, GSM hardware is not required; 

2)

Users can send SMS to a simple shortcode, this is not possible when sending to a GSM phone;

3)

High throughput ( up to 200 msgs/second);

4)

Alphanumeric sender address can be assigned. 

5)

4. SMPP PDU's ?

The TCP packets between the ESME and the SMSC are called PDU's (Protocol Data Units). The following types of PDU's are used SMPP connections: (Protocol Data Units), 

•

Session Management PDUs

-Connecting, disconnection and connection keep alive.

•

Message Submission PDUs 

-Submitting messages to a mobile phone.

•

Message Delivery PDUs 

-Delivery of messages to the SMPP client.

1)

Ancillary Operations PDUs 

-Message query, cancel and replacement.