Terms and definitions in messaging

Multichannel messaging service is based on a variety of telecommunication and Internet technologies. In the description of services, we often use abbreviations that may not always be known to you. Here we have compiled a glossary of terms and definitions used in the industry.

Sender ID

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.

The SMS originator field is also called:

  • OA
  • Originating Address
  • Sender ID
  • Label
  • Source Address
  • Source
  • Tag
  • From Address

Different types of originator are described in the following table:

Type Name Example Restrictions TON NPI
International Numeric +447973000000 Max. 16 digits 1 1
National Numeric 07973000000 Max. 16 digits 0 0
Alphanumeric Messaggio123 Max. 11 characters 5 0
Shortcode 80500 Same as National Numeric 2, 5 or 0 0