OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual

Object Classes and Attribute Types
OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual—522223-001
3-104
IM-C-G4-CLASS-1-BODY-PART
IM-C-G4-CLASS-1-BODY-PART
This class of object is a final-form document of the kind that Group 4 (G4) class 1
facsimile terminals can process.
Table 3-63
describes the attribute types for this class and the syntax, length, and number
of values for each type.
Meanings of Attributes
The first attribute type specifies the following information:
IM-T-G4-CLASS-1-DOCUMENT
Is the final-form document. Each value of this attribute is a protocol element that
contributes to a description of the document’s layout structure. Each value must follow
the rules for G4 class 1 facsimile, which include the BER, except the minimum length is
2 octets. You can specify a zero-length octet string as hexadecimal ‘04 00’.
Implementation and Usage Note
•
OM-S-ONFILE-STRING is a value syntax that applies to messages exceeding 64
kilobytes.
For the attribute IM-T-G4-CLASS-1-DOCUMENT, this value syntax is an
alternative to OM-S-OCTET-STRING.
When this attribute has the syntax OM-S-ONFILE-STRING, the GPI library stores
the value in a file, and the value retains the characteristics of its primary syntax.
For outbound messages, the client program should specify OM-S-ONFILE-STRING
as the syntax of an attribute when the memory storage space might be insufficient to
accommodate the value of the attribute. The client can specify this syntax for
specific strings when the accumulated length of the strings might overflow the total
string area specified in the max-table-data parameter of the GPI_INITIALIZE_
procedure call.
For inbound messages, the Gateway Interface Process automatically specifies OM-
S-ONFILE-STRING for those strings that exceed the value in the max-table-data
parameter of the GPI_INITIALIZE_ call or that exceed the maximum length
Table 3-63. IM-C-G4-CLASS-1-BODY-PART Attributes—General
Characteristics
Attribute Type Value Syntax
Value
Length
Number of
Values
IM-T-G4-CLASS-1-DOCUMENT OM-S-OCTET-STRING
or
OM-S-ONFILE-STRING
2-n 0-more
OM-T-CLASS OM-S-INTEGER - - 1