These 4-byte fields identify a predefined set of protocols used by either the primary logical unit (bytes 14–17) or the secondary logical unit (bytes 18–21) to send data through the VTAM® network. See Figure 1. These send protocols are:

Bit setting 0123 4567

(Bytes 14 or 18) Meaning

Printer data stream profile

1... ....

Base data stream profile is supported.

0... ....

Base data stream profile is not supported.

.1.. ....

General data stream is supported.

.0.. ....

General data stream is not supported.

..1. ....

Job SNA character string (SCS) subset is supported.

..0. ....

Job SNA character string (SCS) is not supported.

.... 1...

Word processing in raw form is supported.

.... 0...

Word processing in raw form is not supported.

...x .xxx

Reserved.

Bit setting 0123 4567

(Bytes 15 or 19) Meaning

Additional data stream profile

.1.. ....

Card format is supported.

.0.. ....

Card format is not supported.

...1 ....

Basic exchange format is supported.

...0 ....

Basic exchange format is not supported.

.... .1..

Word processing exchange diskette format is supported.

.... .0..

Word processing exchange diskette format is not supported.

x.x. x.xx

Reserved.

Bit setting 0123 4567

(Bytes 16 or 20) Meaning

Console

1... ....

Base data stream profile is supported.

0... ....

Base data stream profile is not supported.

.1.. ....

General data stream profile is supported.

.0.. ....

General data stream profile is not supported.

..1. ....

Job SNA character string (SCS) subset is supported.

..0. ....

Job SNA character string (SCS) subset is not supported.

...x xxxx

Reserved.

Bit setting 0123 4567

(Bytes 17 or 21) Meaning

FM or FM header usage

.00. ....

A one-level destination suspension stack is supported.

.01. ....

A two-level destination suspension stack is supported.

.10. ....

Reserved.

.11. ....

A three-level destination suspension stack is supported.

...1 ....

Compaction is supported.

...0 ....

Compaction is not supported.

.... 1...

PDIR for all media is supported.

.... 0...

PDIR for all media is not supported.

.... ..1.

Query for data set FM header type 2 is supported.

.... ..0.

Query for data set FM header type 2 is not supported.

.... ...1

(Byte 17 only) The secondary logical unit needs to receive a CD with every EDS.

.... ...0

(Byte 17 only) The secondary logical unit does not need to receive a CD with every EDS.

.... ...1

(Byte 21 only) The primary logical unit needs to receive a CD with every EDS.

.... ...0

(Byte 21 only) The primary logical unit does not need to receive a CD with every EDS.

x... .x..

Reserved.