Single Network Access Code (SNAC) for Telephone

For all Inmarsat Ocean Regions 870

Ocean Region Network Access code for Telex:

Atlantic Ocean Region - East (AOR-E) 581
Pacific Ocean Region (POR) 582
Indian Ocean Region (IOR) 583
Atlantic Ocean Region - West (AOR-W) 584

Two-digit Service access codes

00 Automatic Use this code to make automatic telex calls using the international telex country codes.

11 International operator
Use this code to obtain information from the international operator about the country where the service provider is located.

12 International information
Use this code to obtain information about a subscriber in a country other than that where the service provider is located.

13 National operator
Use this code to obtain assistance to connect to a subscriber in a country where the service provider is. In any country which does not have an international operator, use this code instead of Code 11.

14 National information
Use this code to obtain information about subscribers in the country where the service provider is located.

15 Radio-telegram service
This code will connect the caller to the radio-telegram service position for the transmission of radio-telegrams originated via telex.

17 Telephone call booking
This code may be used via some LESOs to book telephone calls.

21 Store-and-forward (international)
This code is used to gain access to a store-and-forward unit (SFU) for international calls.

22 Store-and-forward (national)
This code is used to gain access to a store-and-forward unit (SFU) for national calls.

24 Telex letter service
This code is used for directly transmitting a message originated from an MES to a selected telegraph office for delivery by mail or other appropriate means (Inmarsat-C only).

31 Maritime enquiries
This code may be used for special enquiries such as ship location, authorisation, etc.


32 Medical advice
Use this code to obtain medical advice. Some LESOs have direct connections with local hospitals for use with this code.

33 Technical assistance
Use this code if you are having technical problems with your Inmarsat terminal. Technical staff at the LESO are normally able to assist you.

36 Credit card call
Use this code to charge a telex call to a credit or charge card.

37 Time and duration
This code should be used at the start of a call instead of the code 00 for an automatic call. This service will enable the Inmarsat-A MES operator to be advised of the time and duration of the call being set up. This is normally a short telex message at the end of the connection, giving the time and duration of the call. Normally the MES operator terminates the telex call by using five full stops (.....). The time and duration of the call will be automatically returned.

38 Medical assistance
This code should be used if the condition of an ill or injured person aboard the vessel requires urgent evacuation ashore or the services of a doctor aboard the vessel. This code ensures the call is routed to the appropriate agency or authority ashore to deal with the situation.

39 Maritime assistance
This code should be used to obtain maritime assistance if the vessel requires assistance or towing or has encountered oil pollution, etc.

41 Meteorological reports
This code should be used by weather-observing vessels to send their observations. In most cases where this service is available the service is free of charge to the vessel, with the National Weather Authority paying the relevant charges.

42 Navigational hazards and warnings
This code provides a connection to a navigational office to transmit information from the vessel about any hazards which could endanger the safety of navigation, such as wrecks, derelicts, floating obstructions, defective radio beacons or light vessels, icebergs and floating mines.

43 Ship position reports
This code provides a connection to an appropriate national or international centre which is collecting ship movement information for search and rescue (or other) purposes, e.g. AMVER or AUSREP, etc.

51 Meteorological forecasts
This code is used for the retrieval of meteorological forecasts.

52 Navigational warnings
This code is used for the retrieval of navigational warnings.


6(x) Administration specialised use
For use by administrations for specialised use. Often used for leased lines, etc. The ‘x’ digit following the 6 is allocated on a national basis and is not usually given to the same service or leased line for more than one LESO.

70 Databases
This code is normally used by a LESO to allow automatic access to its information retrieval database.

91 Automatic line test
This code should be used to obtain a telex receiver check. The LESO usually transmits the following: THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG1234567890

92 Commissioning tests
This code should be used when a vessel is ready to commence its Inmarsat-A commissioning tests. The code should be used for this purpose only, and then solely via the LESO through which the commissioning has been arranged.
Zadnja sprememba: sobota, 25 april 2020, 19:50