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Originating Address. See Message originator.

Operator Charging Gateway - This is a mediation billing platform that enables mobile content providers to charge subscribers from any connected mobile network directly to their mobile phone bill.

Open Database Connectivity - This is a standard or open application programming interface (API) for accessing a database.

On-net is a term used to describe a message delivered by the home network to a subscriber on that network. In other words, a message is delivered via a terminating operator to its own subscriber. For example, sending a message to a Telstra Australia subscriber directly to Telstra Australia. The message was delivered on-net.

A one-hop connection is another name for an operator.

When you send message to your end user but do not receive replies.

An organization focused to mobile wireless network standards. Also referred to as OMA.

An operator in a country that messages are delivered to.

Identification Number for an operator in the billing system.

This is pricing to send messages to end-users of an operator in a specific country.

The process where a Subscriber provides explicit consent, after receiving Notice from the Mobile Marketer.

The process through which a Subscriber revokes consent after receiving Notice from the Mobile Marketer. An example of an Opt-out process includes, but is not limited to, a Subscriber replying to an SMS message with the phrase “STOP.”

A process by which a Subscriber may exercise his or her right to Opt-out.

A unique message identification number. Internally a decimal value but in some applications the corresponding hexadecimal value is used.

The originator of an SMS is the label describing who or where an SMS is sent from. The most common originator is a mobile number (MSISDN), as this is what is displayed when an SMS is sent from a mobile handset.   Read the What are alphanumeric sender IDs? article to learn more.

Overide Service Registry (OSR) is a database managed by NetNumber, and this determines the routing for a number based on the NNID assigned for the number in the OSR database.

An Over the Air (OTA) SMS is an SMS message that is frequently used by mobile operators to provision or modify core network settings on a handset. These messages are used to optimize configuration settings e.g. SMS Service Center, web settings, or to provision new services such as MMS.

Over the Top (OTT) messages are messages that flow through the data network of a mobile operator as opposed to the core network. OTT suggests something that flows ‘over the top’ of the core network. For example, a P2P SMS message travels through the core signalling infrastructure of a mobile operator, where a WhatsApp message will flow through the data connection of a mobile operator (just like any other data). In this context a WhatsApp message is regarded as an OTT message.