OSI/AS and OSI/TS Supplement (Includes RFC-1006 Support)
CC-TPDU
TPDUs Used by RFC-1006
5–4 107751 Tandem Computers Incorporated
Parameter Code
This field can contain either the TSAP-ID, the TPDU Size, or the Additional
Option Selection:
TSAP-ID
When identifying the TSAP-ID (the configured SCF TSEL ENTRY object),
the value of 1100 0001 identifies the called TSAP and the value of 1100
0010 identifies the called TSAP.
TPDU Size
When identifying the TPDU Size, defines the selected maximum TPDU
size (in octets, including TPDU header and user data, but excluding the
transport packet header) to use over the requested transport connection.
The value is 1100 0000.
Additional Option Selection
When identifying the Additional Option Selection, indicates if transport
expedited data transfer service is used. The value is 1100 0110.
Parameter Length Indicator
This field can contain either the TSAP-ID, the TPDU Size, or the Additional
Option Selection:
TSAP-ID
When identifying the TSAP-ID, indicates the length of the TSAP contained
in Parameter Value.
TPDU Size
When identifying the TPDU Size, the value is 1 octet.
Additional Option Selection
When identifying the Additional Option Selection, the value is 1 octet.
Parameter Value
This field can contain either the TSAP-ID, the TPDU Size, or the Additional
Option Selection:
TSAP-ID
When identifying the TSAP-ID, identifies the calling or called TSAP.