Short Message Peer-to-Peer (SMPP) is a protocol used by the
telecommunications industry for exchanging SMS messages between Short
Message Service Centers (SMSC) and/or External Short Messaging
Entities (ESME). SMPP is able to carry short messages including EMS,
Voice Mail notifications, Cell Broadcasts, WAP messages including WAP
Push messages (used to deliver MMS notifications), USSD messages and
others. Because of its versatility and support for non-GSM SMS
protocols, like UMTS, IS-95 (CDMA), CDMA2000, ANSI-136 (TDMA) and
iDEN, the SMPP is the most commonly used protocol for short message
exchange outside SS7 networks.
is SMSC ?
Short Message service center (SMSC) is a network
element in the mobile telephone
network. Its purpose is to store, forward, convert and deliverShort
Message Service (SMS) messages.
an SMS message is sent from a mobile phone, it will reach an SMSC
first. Then it forwards the SMS message towards the destination.
Here, SMSC is to route SMS messages and regulate the process. If the
recipient is unavailable, the SMSC will store the SMS message and
forward the SMS message when the recipient is available until the
message's expiry period. It is possible on most mobile handset to
specify an expiry period of SMS message after which the SMS message
will be deleted from the SMSC. Once deleted, the SMS message will not
be available for dispatch to the recipient mobile phone. The validity
period should be regarded by the handset user as a request, as the
SMSC itself can be configured to ignore or otherwise handle message
delivery schedules. To get the status report of the message, SMS
sender needs to set a flag in the SMS message to notify the SMSC that
he wants the status report about the delivery of this SMS message.
This status report is sent to the SMS sender via an SMS.
is ESME ?
Short Messaging Entity
is an external application that connects to a Short
Message Service Center (SMSC) to
sending and/or receiving of SMS
is a term used to describe a network entity (mobile/cell phone) that
can send/receive messages. ESME is essentially one of these but
without all the wireless aspects. Eg:
is connected via TCP/IP,