FELCOM 82
H3-12
2.7 OID/DID setting
Originating and Destination Identifications (OID/DID), assigned by the authority, must
be programmed onto the EEPROM, U91 on the CPU board in the field. If not, calls
cannot be accepted throughout the Inmarsat B network. The network can identify the
system onboard a ship, using factory-programmed Forward/Return IDs, but it cannot
identify the end terminal and service type. In other words, the FELCOM 82 must be
able to determine which port should ring when a call comes in, and also, whether the
call is a voice call, a fax call, an HSD call, etc. in addition, it must know which ID
number is utilized on an outgoing call. HEX ID numbers must be programmed into the
FELCOM 82 so that the proper port /mode is identified.
The OID/DID is used by the LES to identify the desired end terminal and the route
between SES (Ship Earth Station).
The OID/DID is “HEX” values” detailed below.
Voice: 01 to 0F
Fax: 11 to 1F
Data: 21 to 2F
Telex: 31 to 3F
56k HSD 41 (or 42 depending on the authority)
64k HSD 42 (41, or 51 depending on the authority)
For example, if the SES installed to provide 3 telephones, 1 facsimile, 1 9.6k data, 1
telex, and 64k HSD, OID/DIDs for these should be:
Handset: 01
Telephone-1: 02
Telephone-2: 03
Fax machine: 11
9.6k data (PC): 21
Telex machine: 31
64k data: 42
The following explains how to enter OID/DIDs when you do not receive OID/DIDs, but
IMNs from the authority. For example, a given vessel applies for and receives 8 ID
numbers. Of these numbers, 3 are voice, 1 is fax, one is Telex, one is MSD, one is
HSD/56 and one is HSD/64.
If the ID's received from INMARSAT are;
399999990 voice
399999991 voice 2
399999992 voice 3
399999993 FAX
399999994 telex
399999995 9600 data
399999996 HSD/56
399999997 HSD/64
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