FM Profile 3 is supported on PLU-SLU sessions using LU type 0, 1, 2, or 3. This profile specifies the following session rules:
The following FM Usage fields define the options for Profile 3:
Tables 3.5 through 3.7 list the FM Profile 3 options that SNA Server supports. SNA Server rejects any bind that specifies an option value not listed in these tables.
Table 3.5 Supported Options for Bind Requests from Primary LUs
Usage Option | Value | Meaning |
Chaining use element | 0 | Can send only single-element chains |
1 | Can send single- or multiple-chains | |
Request control mode | 0 | Immediate request mode used |
Chain response protocol | 01 | Can request only exception-only responses |
10 | Can request only definite responses | |
11 | Can request definite or exception-only responses | |
Compression indicator | 0 | Cannot send compressed data |
1 | Can send compressed data (LU type 1 only) | |
Send EB indicator | 1 | Can send End Bracket |
Table 3.6 Supported Options for Bind Requests from Secondary LUs
Usage Option | Value | Meaning | ||
Chaining use element | 0 | Can only send single-element chains (not LU type 2) | ||
1 | Can send single- or multiple-chains | |||
Request control mode | 0 | Immediate request mode used | ||
Chain response protocol | 01 | Can request only exception-only responses | ||
10 | Can request only definite responses | |||
11 | Can request definite or exception-only responses | |||
Compression indicator | 0 | Cannot send compressed data | ||
Send EB indicator | 1 | Cannot send End Bracket |
Table 3.7 Supported Common Protocol Values for Bind Requests from Any LU
Usage Option | Value | Meaning | |
FM header usage | 0 | Cannot exchange FM headers | |
1 | Can exchange FM headers | ||
Bracket usage | 1 | Bracket protocols must be used | |
Bracket termination rule | 1 | Bracket termination rule 1 is used | |
Alternate code set allowed | 0 | Must use EBCDIC | |
Normal flow send/receive mode | 10 | Half-duplex flip-flop |