AP1.1 System Overview
AP1-5
IA5: Known as ASCII, characters 7-bit codes. Supporting characters in messages
sent or received using international alphabet 5. Specify this code to transmit
English containing lower case alphabet.
ITA2: Known as 5 bit packed. International Telegraph Alphabet 2 supports only
upper case. Specify this code for message which contains only No.2
international communications alphabet. ITA2 code is transmitted faster than
IA5 code. Land-based telex machines use ITA2. The LES converts all codes
into ITA2. Codes which cannot be converted is shown with a question mark.
DATA: Known as 8-bit data format. Used when sending data.
Table AP1.1.4
Message Destination Network Destination Type Code Remarks
Inmarsat-C TELEX IA5
Telex terminal TELEX IA5
FAX terminal PSTN IA5 Modem Type : T30 FAX
English
E-mail PSDN IA5
Inmarsat-C PSDN DATA
Telex terminal not available
FAX terminal not available
Japanese
E-mail PSDN DATA
Inmarsat-C PSDN DATA
Telex terminal TELEX IA5 Thermopylae only
FAX terminal not available
Russian
E-mail PSDN DATA
Inmarsat-C PSDN DATA
Data
Landlines PSDN DATA
SPEC: 2-digit codes (Max.enter 5 digits or Charcters)
32 Medical Advice
38 Medical Assistance
39 Maritime Assistance
41 Meteorological reports
42 Navigational Hazards and warnings
43 Ship position reports
31 Maritime enquiries
33 Technical assistance
37 Time and charges requested at end of call
91 Loop back test
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