Type B Messaging Service | SITA



Type B Messaging underpins every operational aspect of air transport, from commercial and flight operations to ground support, baggage and cargo handling, passenger services, booking availability and aircraft maintenance.

SITA’s Type B Messaging Service is a message switching service that forms the backbone of collaboration within the air transport industry (ATI).

SITA operates the largest messaging network, directly connecting to over 2,400 members. SITA switches over 25 million messages every day, delivering your messages anywhere in the world in no time. 

Type B Messaging Service Use cases
- 201 kb

30+ billion Type B messages
sent per year by
2,400+ ATI companies

How it works

Connect to the ATI’s largest community through a single and dedicated partner for your operational messaging requirements. SITA has the widest network reach and can serve directly more locations than anyone else. By applying the latest technology and leading the development and adoption of industry standards we ensure interoperability with a wide range of messaging standards for your business needs.

First of its kind

SITA is leading the development of industry messaging standards. Type B Messaging Service offers end-to-end management of all message types through a single end-to-end managed service. It is part of our Community Messaging portfolio.

Versatile message conversion

Type B Messaging Service enables your messages to be exchanged automatically between Type B and other messaging domains such as Type X, SMTP, Telex, fax or X.400.

Flexible delivery method

Type B Messaging Service offers access via IP, either a private SITA IP network connection or an internet connection. It also offers flexible addressing and routing options and assured delivery using serial numbering or end-to-end protocols.

Gateway to other messaging environments

One connection to Type B Messaging Service over SITA's global network allows you to communicate with:

  • Any other Type B Messaging user
  • Users of SITATEX
  • Users of the most popular e-mail systems connected to SITA's Global Messaging Services via Simple Mail Transfer Protocol (SMTP) or X.400
  • SITA airline applications and services
  • SITA's cargo community
  • Open trading services including the ASC X12 - SPEC2000 Conversion Service
  • Users on other private and public networks including AFTN and ARINC
  • Public internet e-mail users
  • Fax and Telex users

Type B Messaging Service

Type B Messaging Service click here to enlarge

Your benefits

Type B Messaging Service allows your business to collaborate more effectively with the industry and reliably share key information to support your operations 24/7.

Other benefits

  • Improved security
  • Better reliability
  • Increased performance
  • More cost-effectiveness
  • More flexibility


SITA Global Services

This product is supported by SITA Global Services (SGS) which provides global business continuity through a flexible service model. Our monitoring service ensures IT systems are reliable and available, around the clock and around the world.

Our experts proactively monitor infrastructure, identifying and resolving problems often before they impact services.

Type B Messaging Service Use cases
- 201 kb

30+ billion Type B messages
sent per year by
2,400+ ATI companies

Connect & Collaborate

Optimizing messaging costs in Today’s mixed environment.
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This product is part of the following solutions:

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