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Short Message Peer-to-Peer Protocol (SMPP) is an open message transfer protocol that enables users to interact with an SMSC. The protocol defines the information which needs to be exchanged between the user and the SMSC and the operations associated with the exchange of SMS messages. Every request made using SMPP has an associated response.   It is used primarily for connecting third-party services with SMSCs to enable various types of automated SMS services.

A Short Message Service – Mobile Originating (SMS-MO) is an SMS sent from the SIM card.

A Short Message Service – Mobile Terminating (SMS-MT) is an SMS received by the SIM card.

Located in two geo-redundant data center sites in the Washington DC area and Chicago – this Digital Interconnect messaging hub processes all national US traffic (SMS traffic between carriers in the USA and Canada), along with some international traffic that is typically from US service providers / operators to operators outside of the USA/Canada marketplace.

A message sent via a Short Message Service. 160 characters in length and most commonly referred to as a text (or txt).   Take a look at the Sinch SMS Product page to learn more about our SMS products, or click here to sign up to our self-service portal and get started today.

Short Message Service Center (SMSC) is a server connected to an SS7 Network whose role is to send and receive messages to and from recipient handsets. Often it operates in a “store and forward” configuration, but some carriers operate in a “forward only” or a “forward and store” configuration.

The date/time the CONNECTION Process in the CONNECTION SERVER processed the MT.

Simple Mail Transfer Protocol (SMTP) is an internet standard communication protocol for electronic mail transmission. Mail servers and other message transferagents use SMTP to send and receive mail messages.

Simple Object Access Protocol (SOAP) A protocol used to exchange XML encoded messages over networks. Also referred to as SOAP.

This refers to non-SMS enabled messaging apps such as WhatsApp, WeChat, Line, Tango, Facebook Messenger, and the many other messaging apps in the marketplace today.

Spam is unsolicited, usually commercial or fraudulent mobile messages (SMS, MMS, social), typically sent to a large number of recipients.

Signalling System 7 (SS7) is how the majority of the world’s mobile networks communicate with each other. It is a set of telephony protocols enabling the transmission of voice, data, control/session management information, and of course SMS. The SS7 protocol has layers based on the OSI (Open Systems Interchange) model. The MAP (Mobile Application Part) layer provides the functionality required for SMS transmission. The SMSC, HLR, VLR and MSC communicate together over the SS7 network utilizing MAP commands.

Programs or messages that result in only normal text messaging charges being applied to the mobile subscriber’s wireless bill or that result in messages being deducted from a subscriber’s messaging plan allowance.

A program that requires single opt-in where the mobile subscriber is billed standard SMS rates as per the subscriber’s mobile plan.

The delivery status of a MT message according to the timestamps received from servers in the MT delivery chain.

SIM Tool Kit, or Service Text Messages (the functionality is the same). It is sometimes also called the SIM Application Toolkit. These are binary SMS messages sent to the phone, mainly by Operators but also by our customers, to update the SIM card and/or the phone with service-related information. Examples where STKs are used: - Enable the phone for Internet connectivity - Update prepaid phones - Activate new phones/SIM cards - Upgrade phone ROM/Flash memory software.

In SMPP terms, a “store” is an internal holding place for messages that are unable to be routed either to a supplier/carrier, or to the customer. The message sits in the store until they can be delivered or until they expire.

A Mobile Subscriber is a person who has a mobile phone account with a mobile operator.

Sinch subprojects are a way to group resources together under a parent project.  They can either have separate API credentials or the same credentials as the parent project.

Sinch Voice Application Markup Language (SVAML) is a command language to inform legacy Sinch (Voice) SDKs, it works on the same principal as HTML but is specific to Sinch technology.   Learn more about the Sinch Voice Products.